WO2020113928A1

WO2020113928A1 - Apparatus and method for adaptively cancelling passive intermodulation signals

Info

Publication number: WO2020113928A1
Application number: PCT/CN2019/090978
Authority: WO
Inventors: 孟庆南
Original assignee: 香港梵行科技有限公司
Priority date: 2018-09-29
Filing date: 2019-06-12
Publication date: 2020-06-11

Abstract

Disclosed is an apparatus for adaptively cancelling passive intermodulation signals. One main channel port of a coupler is connected to an antenna port of a duplexer, the other main channel port is connected to an antenna feeder assembly on an antenna link, and a coupling port of the coupler is electrically connected to a radio frequency port of a canceller circuit; the input end of a passive intermodulation detection circuit is electrically connected to a receiving port of the duplexer, and the output end of the passive intermodulation detection circuit is electrically connected to the input end of a digital processing unit; the digital processing unit is electrically connected to a transmitting circuit unit by means of a transmitting signal frequency discriminating circuit, and the output end of the digital processing unit is separately electrically connected to the input ends of the passive intermodulation detection circuit, the transmitting circuit unit, and the canceller circuit; the output end of the transmitting circuit unit is electrically connected to the input end of the duplexer. According to the present invention, the component of the passive intermodulation signals, generated by a wireless transceiving device and other devices or assemblies on the link from the antenna port of the device to the antenna, falling into a receiving frequency band can be cancelled.

Description

自适应抵消无源互调信号的装置及其方法Device and method for adaptively canceling passive intermodulation signal

技术领域Technical field

本发明涉及无线通信领域。具体地说，本发明涉及一种自适应抵消无源互调信号的装置及其方法。The invention relates to the field of wireless communication. Specifically, the present invention relates to an apparatus and method for adaptively canceling passive intermodulation signals.

背景技术Background technique

在通信***中，大量应用无线收发设备。无线收发设备本身包含有产生无源互调信号的器件，比如射频双工器、滤波器、合路器等；从无线收发设备天线口到天线的链路上也包含很多产生无源互调信号的器件，比如耦合器、射频电缆、塔顶放大器等。对于无线收发***而言，如何抑制由无线收发***中发射信号引起的对无线收发设备的接收机产生的互调干扰，一直是该类***的关键问题。因此，要求无线收发设备在工作时，发射通道产生的无源互调信号电平尽可能低，以免无源互调信号落入接收通道，对接收通道造成互调干扰。当前无源互调抵消技术一般有两种方式：In communication systems, a large number of wireless transceiver devices are used. The wireless transceiver equipment itself contains devices that generate passive intermodulation signals, such as RF duplexers, filters, combiners, etc.; the link from the antenna port of the wireless transceiver equipment to the antenna also contains many passive intermodulation signals. Devices, such as couplers, RF cables, tower-mounted amplifiers, etc. For the wireless transceiver system, how to suppress the intermodulation interference caused by the transmitted signal in the wireless transceiver system to the receiver of the wireless transceiver device has always been the key issue of such systems. Therefore, it is required that the passive intermodulation signal level generated by the transmitting channel is as low as possible when the wireless transceiver equipment is working, so as to prevent the passive intermodulation signal from falling into the receiving channel and causing intermodulation interference to the receiving channel. The current passive intermodulation cancellation technology generally has two ways:

对比文献CN100490307C公开了一种名称为：“信号处理电路、基站和消除互调产物的方法”发明专利，该专利将输入非线性单元的原载波分为两路，分别输入两只支路，第一路原载波经过非线性单元产生包含有第一组互调产物的处理信号，第二路原载波经过分路器、倍频器、混合器以及调节电路。产生含有第二组高次互调产物的控制信号，最后将两路信号叠加。它利用第二组高次互调与第一组互调产物的频率相同，幅度接近相同，相位相反，抵消互调信号。Comparative document CN100490307C discloses an invention patent titled: "Signal Processing Circuit, Base Station and Method for Eliminating Intermodulation Products". This patent divides the original carrier of the input non-linear unit into two channels, and inputs two branches respectively. One original carrier passes through the non-linear unit to generate a processing signal containing the first set of intermodulation products, and the second original carrier passes through the splitter, frequency multiplier, mixer and adjustment circuit. Generate a control signal containing the second set of higher-order intermodulation products, and finally superimpose the two signals. It uses the second set of high-order intermodulation and the first set of intermodulation products to have the same frequency, close to the same amplitude, and opposite phase to cancel the intermodulation signal.

该技术方案在以下不足：1、该技术方案不适用无源器件，它没有考虑非线性单元内部不同位置的互调值差异，对于无源器件这种差异是很明显的，在无源电路中，传输信号的幅度衰减和相位变化程度非常大。在多个位置产生互调的情况下，电路前端产生的互调信号会在信号传输过程中大幅度衰减，电路输出的互调信号只含有电路末端产生的互调信号，因此，对于双工器来说，若从非线性单元的前端取信号，所产生的互调抵消信号无法与天线端口的互调信号相抵消；2、该技术方案产生的互调抵消信号即第二组高次互调产物，被限定为固定阶次得互调产物，只能消除对应频段内的非线性单元的互调信号，存在局限性。The technical solution has the following shortcomings: 1. The technical solution is not applicable to passive devices, it does not consider the difference of intermodulation values at different positions inside the nonlinear unit, this difference is very obvious for passive devices, in passive circuits The amplitude attenuation and phase change of the transmitted signal are very large. In the case of intermodulation at multiple locations, the intermodulation signal generated at the front end of the circuit will be greatly attenuated during signal transmission. The intermodulation signal output by the circuit only contains the intermodulation signal generated at the end of the circuit. Therefore, for the duplexer In other words, if the signal is taken from the front end of the non-linear unit, the generated intermodulation cancellation signal cannot be canceled with the antenna port intermodulation signal; 2. The intermodulation cancellation signal generated by this technical solution is the second group of high-order intermodulation The product is limited to a fixed-order intermodulation product, which can only eliminate the intermodulation signal of the nonlinear unit in the corresponding frequency band, which has limitations.

对比文献201310048951.1公开了一种名称为：“一种用于无源器件的互调抵消装置”发明专利，该专利从无源器件输出端直接耦合包含有高次互调产物的发射信号，通过无源调节器的调整传输至带有互调信号发生器的射频链路末端反射后，再次通过无源调节器的调整，获得与前述无源器件发射信号的互调信号相同频率、电平和相反相位的抵消信号，该信号通过耦合器与无源非线性单元输出端发射信号叠加，实现互调抵消。Comparative document 201310048951.1 discloses an invention patent entitled "An Intermodulation Cancellation Device for Passive Devices". This patent directly couples the emission signal containing high-order intermodulation products from the output of the passive device. After the adjustment of the source regulator is transmitted to the end of the RF link with the intermodulation signal generator, it is adjusted again by the passive regulator to obtain the same frequency, level and opposite phase as the intermodulation signal transmitted by the passive device. The cancellation signal of the signal is superimposed on the output signal of the passive nonlinear unit through the coupler to achieve intermodulation cancellation.

该技术方案在以下不足：1、该技术方案采用无源调节器，幅度调节、相位调节均是无源器件，如果要实现幅度调节、相位调节需要借助外力驱动无源调节器，比如使用电机驱动，或者直接靠人工驱动，这些方式会使得实际应用成本高，且不便于产品化；2、由于没有无源互调抵消结果的反馈检测电路，抵消结果不能实时监控和调整。The technical solution has the following disadvantages: 1. The technical solution uses a passive regulator, amplitude adjustment and phase adjustment are passive devices, if you want to achieve amplitude adjustment and phase adjustment, you need to drive the passive regulator with the help of external force, such as using a motor drive , Or directly driven by manual, these methods will make the actual application cost high, and it is not easy to commercialize; 2. Because there is no feedback detection circuit for passive intermodulation cancellation results, the cancellation results cannot be monitored and adjusted in real time.

除此之外，现有其它的降低无源互调信号电平的方法主要集中在无源器件的结构和生产工艺上，这些方法往往需要增加额外的成本，而且加厚金属镀层的电镀工艺往往会增加污染。In addition, other existing methods for reducing the level of passive intermodulation signals mainly focus on the structure and production process of passive devices. These methods often require additional costs, and the plating process of thickened metal plating is often Will increase pollution.

发明内容Summary of the invention

本发明为了克服上述背景技术不足，提供一种数字自适应的，用于抵消无线收发***中的无源互调信号的装置，使其能将无线收发设备以及该设备天线口至天线这一段链路上其他设备或组件产生的无源互调信号落入到接收频段的分量抵消。In order to overcome the above-mentioned deficiencies of the background technology, the present invention provides a digitally adaptive device for canceling passive intermodulation signals in a wireless transceiver system, so that it can connect the wireless transceiver device and the antenna port of the device to the antenna Passive intermodulation signals generated by other equipment or components on the road fall into the receiving frequency band to cancel the components.

本发明提供了一种自适应抵消无源互调信号的装置，其特征在于：它包括一个耦合器，抵消器电路，无源互调检测电路，数字处理单元，双工器，发射电路单元，天馈组件，天线；所述耦合器的一个主通路端口与所述双工器的天线口连接，另一个主通路端口与天线链路上的天馈组件连接，耦合器的耦合端口和抵消器电路的射频端口电连接；所述无源互调检测电路的输入端与双工器接收端口电连接，无源互调检测电路的输出端与数字处理单元的输入端电连接，；数字处理单元经发射信号鉴频电路与发射电路单元电连接，数字处理单元的输出端分别与无源互调检测电路、发射电路单元和抵消器电路的输入端电连接；发射电路单元的输出端与所述双工器的输入端电连接；The invention provides an apparatus for adaptively canceling passive intermodulation signals, which is characterized in that it includes a coupler, a canceller circuit, a passive intermodulation detection circuit, a digital processing unit, a duplexer, and a transmitting circuit unit, Antenna feeder component, antenna; one main access port of the coupler is connected to the antenna port of the duplexer, the other main access port is connected to the antenna feeder component on the antenna link, the coupling port of the coupler and the canceller The radio frequency port of the circuit is electrically connected; the input end of the passive intermodulation detection circuit is electrically connected to the receiving port of the duplexer; the output end of the passive intermodulation detection circuit is electrically connected to the input end of the digital processing unit; and the digital processing unit The transmission signal frequency discriminating circuit is electrically connected to the transmitting circuit unit, and the output terminal of the digital processing unit is electrically connected to the input terminals of the passive intermodulation detection circuit, the transmitting circuit unit and the canceller circuit, respectively; the output terminal of the transmitting circuit unit is connected to the The input end of the duplexer is electrically connected;

所述发射电路单元的大于某一射频功率值的信号使所述双工器及其天线链路产生无源互调信号，并且该无源互调信号中有落入到双工器接收频段的且与接收信号有一定频率间隔的分量；The signal of the transmitting circuit unit greater than a certain radio frequency power value causes the duplexer and its antenna link to generate a passive intermodulation signal, and some of the passive intermodulation signal falls into the receiving frequency band of the duplexer And the components with a certain frequency interval from the received signal;

所述耦合器从双工器的天线口的链路上耦合射频信号输出给抵消器电路；所述耦合器的一个主通路端口与所述双工器的天线口连接，另一个主通路端口与天线链路上的天馈组件连接，耦合器的耦合端口和抵消器电路的射频端口电连接；The coupler couples the RF signal from the link of the antenna port of the duplexer to the canceller circuit; one main channel port of the coupler is connected to the antenna port of the duplexer, and the other main channel port is connected to The antenna feeder component connection on the antenna link, the coupling port of the coupler and the RF port of the canceller circuit are electrically connected;

所述抵消器电路将利用来自于耦合器的射频信号中的发射信号在抵消器电路中互调信号发生器产生出与所述射频信号中的无源互调信号频率相同、幅度不同和相位不同的互调信号；所述互调信号反射后通过抵消器电路中的调幅调相器的幅度调整和相位调整，并耦合输出至耦合器的主通路，形成与所述无源互调信号中落入接收频段的且与接收信号有一定频率间隔的分量频率相同、幅度相同和相位相反的互调抵消信号；The canceller circuit will use the transmitted signal from the radio frequency signal from the coupler to generate an intermodulation signal generator in the canceler circuit with the same frequency, different amplitude and different phase as the passive intermodulation signal in the radio frequency signal Intermodulation signal; after being reflected, the intermodulation signal passes through the amplitude adjustment and phase adjustment of the amplitude modulation phase modulator in the canceller circuit, and is coupled out to the main path of the coupler, forming a neutral drop with the passive intermodulation signal Intermodulation cancellation signals with the same frequency, the same amplitude and the opposite phase into the receiving frequency band and having a certain frequency interval from the received signal;

所述无源互调检测电路将所述双工器接收端口后的射频信号经过增益可调控的放大，下变频，最终转换成数字信号并输入到数字处理单元，所述接收信号和无源互调信号落入接收频段的分量；The passive intermodulation detection circuit amplifies the radio frequency signal after the receiving port of the duplexer through adjustable gain, down-converts, and finally converts it into a digital signal and inputs it into a digital processing unit. The component of the modulated signal falling into the receiving frequency band;

所述数字处理单元依据发射信号频率信息计算得出无源互调信号的检测幅值并与无源互调预设值进行对比；根据当所述检测幅值与所述预设值对比结果，所述抵消器电路选择是否产生互调抵消信号；所述数字处理单元产生触发信号输出至发射电路单元从而触发发射电路单元产生射频信号；所述数字处理单元通过多路数模转换器与抵消器电路连接，将幅度、相位的控制量传递给抵消器电路。The digital processing unit calculates the detected amplitude of the passive intermodulation signal according to the frequency information of the transmitted signal and compares it with the preset value of the passive intermodulation; according to the comparison result between the detected amplitude and the preset value, The canceller circuit selects whether to generate an intermodulation cancellation signal; the digital processing unit generates a trigger signal and outputs it to the transmitting circuit unit to trigger the transmitting circuit unit to generate a radio frequency signal; the digital processing unit passes the multi-channel digital-to-analog converter and the canceller The circuit is connected, and the control amount of amplitude and phase is transferred to the canceller circuit.

上述技术方案中，所述装置中的双工器代表无线收发设备中的无源器件；所述天馈组件和天线代表无线收发***的天线链路中的无源器件，其中天馈组件代表天线链路中单个或多个无源器件的组合，这些无源器件包括但不限于电缆、连接器、耦合器、合路器。In the above technical solution, the duplexer in the device represents a passive device in a wireless transceiver device; the antenna feed component and antenna represent a passive device in an antenna link of a wireless transceiver system, where the antenna feed component represents an antenna A combination of single or multiple passive devices in the link. These passive devices include but are not limited to cables, connectors, couplers, and combiners.

上述技术方案中，所述抵消器电路将利用来自于耦合器的射频信号中的发射信号在抵消器电路中的互调信号发生器上产生出与所述射频信号中的无源互调信号频率相同、幅度不同和相位不同的互调信号，且该互调信号中落入接收频段的单个3阶分量、或单个5阶分量、或单个更高阶次分量，或者多个不同频点的3阶分量、或多个不同频点的5阶分量、或多个不同频点的更高阶次分量，或者同时有3阶分量、5阶分量甚至更高阶次分量之间的幅度关系和相位关系与所述双工器及其天线链路产生的无源互调信号中落入接收频段的单个3阶分量、或单个5阶分量、或单个更高阶次分量，或者多个不同频点的3阶分量、或多个不同频点的5阶分量、或多个不同频点的更高阶次分量，或者同时有3阶分量、5阶分量甚至更高阶次分量之间的幅值关系和相位关系基本一致；In the above technical solution, the canceller circuit will use the transmitted signal from the radio frequency signal from the coupler to generate the frequency of the passive intermodulation signal on the intermodulation signal generator in the canceller circuit with the radio frequency signal The same, different amplitude and different phase intermodulation signals, and the intermodulation signal falls into a single 3rd-order component, or a single 5th-order component, or a single higher-order component of the receiving frequency band, or 3 of multiple different frequency points Order components, or 5th order components at multiple different frequency points, or higher order components at multiple different frequency points, or there are amplitude relationships and phases between 3rd order components, 5th order components and even higher order components at the same time The relationship with the passive intermodulation signal generated by the duplexer and its antenna link falls into a single third-order component, or a single fifth-order component, or a single higher-order component, or multiple different frequency points that fall into the receiving frequency band 3rd order component, or 5th order component at multiple different frequency points, or higher order component at multiple different frequency points, or there are amplitudes between 3rd order component, 5th order component and even higher order component at the same time Relationship and phase relationship are basically the same;

而耦合到抵消器电路的射频信号中的接收信号和无源互调信号的功率在所述互调信号发生器上产生的互调信号的幅值远小于上述无源互调信号的幅值，不对无源互调抵消结果产生影响；And the amplitude of the intermodulation signal generated by the power of the received signal and the passive intermodulation signal in the radio frequency signal coupled to the canceller circuit on the intermodulation signal generator is much smaller than the amplitude of the passive intermodulation signal, Does not affect the passive intermodulation cancellation results;

所述互调信号反射后通过抵消器电路中的调幅调相器的幅度调整和相位调整，并耦合输出至耦合器的主通路，形成与所述无源互调信号中落入接收频段的且与接收信号有一定频率间隔的分量频率相同、幅度相同和相位相反的互调抵消信号，该互调抵消信号与所述无源互调信号中的分量进行抵消，抵消后的无源互调信号小于等于无源互调预设值；同时双工器及其天线链路中的发射信号和接收信号在双工器及其天线链路中正常运作。After being reflected, the intermodulation signal passes through the amplitude adjustment and phase adjustment of the amplitude modulation phase modulator in the canceller circuit, and is coupled to the main path of the coupler to form a passive intermodulation signal that falls into the receiving frequency band and An intermodulation cancellation signal with the same frequency, the same amplitude and opposite phase as the component with a certain frequency interval from the received signal, the intermodulation cancellation signal cancels the component in the passive intermodulation signal, and the canceled passive intermodulation signal Less than or equal to the preset value of passive intermodulation; at the same time, the transmitted and received signals in the duplexer and its antenna link operate normally in the duplexer and its antenna link.

上述技术方案中，所述数字处理单元用于依据发射信号频率信息，实现对无源互调信号的幅值检测，以及在检测幅值大于所述预设值时，控制所述抵消器电路产生出互调抵消信号与所述射频信号中的无源互调信号进行抵消的方法如下：In the above technical solution, the digital processing unit is used to detect the amplitude of the passive intermodulation signal according to the frequency information of the transmitted signal, and when the detected amplitude is greater than the preset value, control the canceller circuit to generate The method for canceling out the intermodulation cancellation signal and the passive intermodulation signal in the radio frequency signal is as follows:

所述数字处理单元首先依据发射信号频率信息，计算出与之相关的无源互调信号的频率信息，并将其转换为无源互调信号的滤波参数，然后依据接收信号频率、带宽信息与无源互调信号频率、带宽信息求得它们之间的频率间隔，再选择相应的数字滤波方式和积分方式，最终实现对无源互调信号的幅值检测；然后将所述无源互调信号的检测幅值与无源互调预设值进行对比；The digital processing unit first calculates the frequency information of the passive intermodulation signal related to it based on the frequency information of the transmitted signal, and converts it into the filtering parameter of the passive intermodulation signal, and then based on the received signal frequency and bandwidth information and The frequency and bandwidth information of the passive intermodulation signal is used to obtain the frequency interval between them, and then the corresponding digital filtering method and integration method are selected to finally realize the amplitude detection of the passive intermodulation signal; and then the passive intermodulation signal The detection amplitude of the signal is compared with the preset value of passive intermodulation;

当所述检测幅值小于等于所述预设值时，所述抵消器电路不产生互调抵消信号，不对所述双工器及其天线链路的无源互调指标产生影响；当所述检测幅值大于所述预设值时，控制所述抵消器电路对其幅度和相位的调整产生出与所述双工器及其天线链路的无源互调信号频率相同、幅度相同和相位相反的互调抵消信号与所述射频信号中的无源互调信号进行抵消，并保持这种依据无源互调信号的幅值检测结果实时调控所述抵消器电路幅度和相位使无源互调信号抵消结果小于等于所述预设值的工作状态。When the detected amplitude is less than or equal to the preset value, the canceler circuit does not generate an intermodulation cancellation signal, and does not affect the passive intermodulation index of the duplexer and its antenna link; when the When the detected amplitude is greater than the preset value, the adjustment of the amplitude and phase of the canceller circuit is controlled to produce the same frequency, amplitude and phase as the passive intermodulation signal of the duplexer and its antenna link The opposite intermodulation cancellation signal cancels with the passive intermodulation signal in the radio frequency signal, and maintains the amplitude and phase of the canceller circuit in real time to adjust the amplitude and phase of the canceller circuit based on the detection result of the passive intermodulation signal so that the passive mutual modulation The working state where the modulation signal cancellation result is less than or equal to the preset value.

上述技术方案中，所述数字处理单元通过发射信号鉴频电路从所述装置的发射电路单元上获取发射信号，转换为数字信号，输入数字处理单元进行鉴频处理，获取相关发射信号频率信息，并由发射信号和接收信号之间的双工频率间隔推算相应接收信号频率信息；或通过数字处理单元中的信息交互接口直接从该装置的输入信息中获取。In the above technical solution, the digital processing unit obtains the transmission signal from the transmission circuit unit of the device through the transmission signal frequency discrimination circuit, converts it into a digital signal, and inputs the digital processing unit to perform frequency discrimination processing to obtain the relevant transmission signal frequency information, And the corresponding received signal frequency information is estimated from the duplex frequency interval between the transmitted signal and the received signal; or directly obtained from the input information of the device through the information interaction interface in the digital processing unit.

上述技术方案中，激励所述双工器及其天线链路产生无源互调信号的信号和激励所述互调信号发生器产生互调信号的信号是同源的，均来源于发射电路单元的发射信号，所以无源器件产生的无源互调信号和互调信号发生器产生的互调信号的频率相同、带宽相同；所述天线链路是从双工器天线口到天线这段链路，所述天馈组件代表天线链路中单个或多个无源器件的组合，这些无源器件包括但不限于电缆、连接器、耦合器、合路器；所述发射信号由多音信号构成或者由多载波调制信号构成。In the above technical solution, the signal that excites the duplexer and its antenna link to generate a passive intermodulation signal is the same as the signal that excites the intermodulation signal generator to generate an intermodulation signal, both of which originate from the transmitting circuit unit The transmitted signal of the passive device, so the passive intermodulation signal generated by the passive device and the intermodulation signal generated by the intermodulation signal generator have the same frequency and the same bandwidth; the antenna link is the link from the antenna port of the duplexer to the antenna Road, the antenna feed component represents a combination of single or multiple passive devices in the antenna link, and these passive devices include but are not limited to cables, connectors, couplers, and combiners; the transmitted signal is composed of multi-tone signals Constitute or consist of multi-carrier modulated signals.

上述技术方案中，当所述双工器或天馈组件或天线单个产生的或多个无源器件同时产生并叠加而成的与接收信号有一定频率间隔的无源互调信号中仅会有单个3阶、或单个5阶或单个更高阶次分量落入双工器的接收频带且造成从双工器接收端口测试的无源互调指标达不到预设值要求时，为使所述双工器接收端口的无源互调值满足预设值要求且使本装置的抵消能力大于20dB：所述互调信号发生器所能产生的所述互调抵消信号的最大幅值要大于所述双工器及其天线链路的无源互调信号中落入到接收频段对应频率的单个分量的幅值；In the above technical solution, only passive intermodulation signals with a certain frequency interval from the received signal generated by the duplexer or antenna feeder component or antenna and generated by a single or multiple passive devices at the same time and superimposed are only a certain frequency interval from the received signal When a single 3rd order, or a single 5th order or a single higher order component falls into the receiving band of the duplexer and causes the passive intermodulation index tested from the receiving port of the duplexer to fail to meet the preset value, The passive intermodulation value of the receiving port of the duplexer meets the preset value requirement and makes the cancellation capability of the device greater than 20dB: the maximum amplitude of the intermodulation cancellation signal that can be generated by the intermodulation signal generator is greater than The amplitude of a single component of the passive intermodulation signal of the duplexer and its antenna link falling into the corresponding frequency of the receiving frequency band;

当所述双工器或天馈组件或天线单个产生的或多个无源器件同时产生并叠加而成的与接收信号有一定频率间隔的无源互调信号中仅有多个不同频率的3阶、或多个不同频率的5阶或多个不同频率的更高阶次分量落入双工器的接收频带且造成从双工器接收端口测试的无源互调指标达不到预设值要求时，为使所述双工器接收端口的无源互调值满足预设值要求且使本装置的抵消能力大于20dB：所述互调信号发生器所能产生的对应无源互调分量频率的互调抵消信号的最大幅值要大于所述双工器及其天线链路的无源互调信号中落入到接收频段的多个对应频率分量的幅值；所述互调信号发生器上产生的互调信号中多个特定阶次分量之间的相位关系与所述双工器及其天线链路产生的无源互调信号中多个特定阶次分量之间的相位关系基本一致；When a passive intermodulation signal with a certain frequency interval from the received signal is generated by the duplexer or antenna feeder component or the antenna that is generated by a single or multiple passive devices and stacked at the same time, there are only multiple different frequencies 3 Order, or higher order components of five or more different frequencies at different frequencies fall into the receiving band of the duplexer and cause the passive intermodulation index tested from the receiving port of the duplexer to not reach the preset value When required, in order to make the passive intermodulation value of the receiving port of the duplexer meet the preset value requirements and make the cancellation capability of the device greater than 20dB: the corresponding passive intermodulation component that can be generated by the intermodulation signal generator The maximum amplitude of the frequency intermodulation cancellation signal is greater than the amplitude of a number of corresponding frequency components that fall into the receiving frequency band in the passive intermodulation signal of the duplexer and its antenna link; the intermodulation signal occurs The phase relationship between multiple specific order components in the intermodulation signal generated on the transmitter and the phase relationship between multiple specific order components in the passive intermodulation signal generated by the duplexer and its antenna link are basically Consistent

当所述双工器或天馈组件或天线单个产生的或多个无源器件同时产生并叠加而成的与接收信号有一定频率间隔的无源互调信号中同时有3阶、5阶或更高阶次分量落入双工器的接收频带且都造成从双工器接收端口测试的无源互调指标达不到预设值要求时，为使所述双工器接收端口的无源互调值满足预设值要求且使本装置的抵消能力大于20dB：所述互调信号发生器所能产生的对应无源互调分量频率的所述互调抵消信号的最大幅值要大于所述双工器及其天线链路的无源互调信号中落入到接收频段的多个对应频率分量的幅值；所述互调信号发生器上产生的互调信号中多个特定阶次分量之间的幅度关系和相位关系与所述双工器及其天线链路产生的无源互调信号中多个特定阶次分量之间的幅值关系和相位关系基本一致。When the passive intermodulation signal with a certain frequency interval from the received signal is generated by the duplexer or the antenna feeder component or the antenna that is generated by a single or multiple passive devices at the same time and superimposed, there are 3, 5 or When the higher-order components fall into the receiving band of the duplexer and all cause the passive intermodulation index tested from the receiving port of the duplexer to fail to meet the preset value requirements, in order to make the receiving port of the duplexer passive The intermodulation value meets the requirements of the preset value and the cancellation capability of the device is greater than 20dB: the maximum amplitude of the intermodulation cancellation signal corresponding to the frequency of the passive intermodulation component that can be generated by the intermodulation signal generator is greater than the The amplitude of multiple corresponding frequency components falling into the receiving frequency band in the passive intermodulation signal of the duplexer and its antenna link; multiple specific orders in the intermodulation signal generated on the intermodulation signal generator The amplitude relationship and phase relationship between the components are basically consistent with the amplitude relationship and phase relationship between multiple specific order components in the passive intermodulation signal generated by the duplexer and its antenna link.

上述技术方案中，当无源互调检测电路中的射频信号过大造成链路阻塞时，数字处理单元缩小无源互调检测电路的链路增益以便正常处理接收信号并停止检测无源互调信号幅值；In the above technical solution, when the radio frequency signal in the passive intermodulation detection circuit is too large and the link is blocked, the digital processing unit reduces the link gain of the passive intermodulation detection circuit to normally process the received signal and stop detecting passive intermodulation Signal amplitude

当无源互调检测电路没有阻塞时，所述数字处理单元在进行无源互调幅值计算过程中，处理的来源于无源互调检测电路的信号中包含有无源互调信号和接收信号且无源互调信号和接收信号之间存在频率间隔。When the passive intermodulation detection circuit is not blocked, during the calculation of the passive intermodulation amplitude, the digital processing unit processes the signal derived from the passive intermodulation detection circuit including the passive intermodulation signal and the reception There is a frequency separation between the signal and the passive intermodulation signal and the received signal.

上述技术方案中，所述数字处理单元计算无源互调信号幅值的方法为：In the above technical solution, the method for the digital processing unit to calculate the amplitude of the passive intermodulation signal is:

数字处理单元首先依据发射信号频率信息计算出与之相关的无源互调信号的频率信息，The digital processing unit first calculates the frequency information of the passive intermodulation signal related to it based on the frequency information of the transmitted signal,

然后依据接收信号频率、带宽信息与无源互调信号频率、带宽信息求得它们之间的频率间隔，并依据该频率间隔选择合适的算法计算无源互调信号幅值；Then according to the received signal frequency, bandwidth information and passive intermodulation signal frequency, bandwidth information to obtain the frequency interval between them, and according to the frequency interval to select an appropriate algorithm to calculate the passive intermodulation signal amplitude;

所述计算无源互调信号幅值的算法包含但不限于直接滤波积分法和分段滤波积分法；The algorithm for calculating the amplitude of the passive intermodulation signal includes but is not limited to the direct filter integration method and the segmented filter integration method;

所述直接滤波积分法是指依据无源互调信号带宽直接数字滤波并积分求幅度，此时所述无源互调信号落入到接收频段的各阶次分量与接收信号之间的频率间隔要大于等于无源互调信号的数字滤波算法中数字滤波器通带到阻带的过渡带带宽，此频率间隔即是采用直接滤波积分法的依据；The direct filtering integration method refers to directly digitally filtering and integrating the amplitude based on the bandwidth of the passive intermodulation signal, at which time the frequency interval between each order component of the passive intermodulation signal falling into the receiving frequency band and the receiving signal To be greater than or equal to the passive intermodulation signal in the digital filtering algorithm of the digital filter passband to stopband transition band bandwidth, this frequency interval is the basis of the direct filter integration method;

所述分段滤波积分法是指将无源互调信号带宽分成数个子带宽，依据每个子带宽进行数字滤波并积分求幅度，再将所有子带宽对应的幅度进行累加获得整个信号幅值，此时所述各阶次分量与接收信号之间的频率间隔要大于等于各阶次分量边子带信号的数字滤波器通带到阻带的过渡带带宽，此频率间隔即是采用分段滤波积分法的依据。The segmented filtering integration method refers to dividing the bandwidth of the passive intermodulation signal into several sub-bandwidths, performing digital filtering and integrating to obtain the amplitude according to each sub-bandwidth, and then accumulating the amplitudes corresponding to all the sub-bandwidths to obtain the entire signal amplitude. When the frequency interval between each order component and the received signal is greater than or equal to the bandwidth of the transition band from the pass band to the stop band of the digital sub-band signal of each order component, this frequency interval is the use of segmented filter integration The basis of law.

上述技术方案中，所述抵消器电路通过耦合器与双工器天线口后的天线链路连接；所述耦合器的一个主通路端口与双工器天线口连接且距离需控制在0到1米范围内，具体长度由无源互调抵消最佳效果确定；耦合器的另一个主通路端口与天馈组件连接，耦合器的耦合端口连接抵消器电路；所述耦合器的***损耗小于0.2dB，耦合器的耦合度范围为25dB到45dB，耦合器的耦合端口相对于发射信号为正向耦合端口，耦合器的承载功率需大于该装置的最大发射功率峰值，耦合器的带宽包含发射频段，接收频段以及两者间的双工间隔，耦合器的频带内增益波动与发射频段、接收频段相关且需在一定的门限值范围内；耦合器的无源互调指标符合天馈组件的无源互调指标要求；所述抵消器电路的承载功率门限值需大于等于耦合器的功率门限值与耦合器的耦合度之差值；为使抵消器电路中互调信号发生器能产生无源互调抵消信号，加载在所述抵消器电路的发射信号功率的最小值需大于一定的功率门限值。In the above technical solution, the canceller circuit is connected to the antenna link behind the duplexer antenna port through a coupler; a main access port of the coupler is connected to the duplexer antenna port and the distance needs to be controlled from 0 to 1. Within the range of meters, the specific length is determined by the best effect of passive intermodulation cancellation; the other main channel port of the coupler is connected to the antenna feed component, and the coupling port of the coupler is connected to the canceler circuit; the insertion loss of the coupler is less than 0.2 dB, the coupling degree of the coupler ranges from 25dB to 45dB, the coupling port of the coupler is a forward coupling port relative to the transmitted signal, the carrying power of the coupler must be greater than the maximum transmit power peak of the device, the bandwidth of the coupler includes the transmit frequency band , The receiving frequency band and the duplex interval between the two, the gain fluctuation in the frequency band of the coupler is related to the transmitting frequency band and the receiving frequency band and needs to be within a certain threshold range; the passive intermodulation index of the coupler is consistent with the antenna feed component Passive intermodulation index requirements; the load-bearing power threshold of the canceller circuit must be greater than or equal to the difference between the power threshold of the coupler and the coupling degree of the coupler; in order to enable the intermodulation signal generator in the canceller circuit To generate a passive intermodulation cancellation signal, the minimum value of the power of the transmitted signal loaded on the canceller circuit needs to be greater than a certain power threshold.

上述技术方案中，无源互调检测电路包括低噪声放大器、下变频模块、高速模数转换器，噪声放大器的输入端与双工器的接收端口电连接，噪声放大器的输出端经下变频模块与高速模数转换器的输入端电连接，高速模数转换器的输出端与数字处理单元的输入端电连接；所述无源互调检测电路的增益由需求的无源互调预设值、无源互调检测电路中高速模数转换器的最小采样功率、链路噪声系数等确定；所述无源互调检测电路的接收信号功率的最大值大于等于该装置实际对应的通信标准所规定的最大接收信号功率。In the above technical solution, the passive intermodulation detection circuit includes a low-noise amplifier, a down-conversion module, and a high-speed analog-to-digital converter. The input terminal of the noise amplifier is electrically connected to the receiving port of the duplexer, and the output terminal of the noise amplifier passes through the down-conversion module. It is electrically connected to the input end of the high-speed analog-to-digital converter, and the output end of the high-speed analog-to-digital converter is electrically connected to the input end of the digital processing unit; the gain of the passive intermodulation detection circuit is preset by the required passive intermodulation 3. The minimum sampling power and link noise figure of the high-speed analog-to-digital converter in the passive intermodulation detection circuit are determined; the maximum value of the received signal power of the passive intermodulation detection circuit is greater than or equal to the actual communication standard of the device The specified maximum received signal power.

上述技术方案中，所述数字处理单元通过多路数模转换器与抵消器电路连接，将幅度、相位的控制量传递给抵消器电路，所述抵消器电路的幅度调整精度和相位调整精度的要求主要来源于无源互调信号抵消能力需求；In the above technical solution, the digital processing unit is connected to the canceller circuit through a multi-channel digital-to-analog converter, and transmits the control amounts of amplitude and phase to the canceller circuit. The amplitude adjustment accuracy and phase adjustment accuracy of the canceller circuit The requirements are mainly derived from the need for passive intermodulation signal cancellation capabilities;

所述数字处理单元至少包含具备数字信号处理功能的逻辑处理与运算处理器件，用于数字信号的接收、算法处理、数字信号的输出、控制和配置信号的输出，所述逻辑处理与运算处理器件包含但不限于现场可编程门阵列器件，中央处理器，数字信号处理器；所述数字处理单元的信息交互接口的硬件构成包括但不限于以太网接口、光纤接口、RS-485总线接口；所述数字处理单元中的数模转换器的位数范围在10～18位之间，且至少有3个数模转换器；The digital processing unit includes at least a logic processing and arithmetic processing device with a digital signal processing function for digital signal reception, algorithm processing, digital signal output, control and configuration signal output, the logic processing and arithmetic processing device Including but not limited to field programmable gate array device, central processor, digital signal processor; the hardware composition of the information interaction interface of the digital processing unit includes but not limited to Ethernet interface, optical fiber interface, RS-485 bus interface; The number of digits of the digital-to-analog converter in the digital processing unit ranges from 10 to 18 bits, and there are at least three digital-to-analog converters;

所述数字处理单元与无源互调检测电路之间至少设有两个接口：一个接口作用是获取无源互调检测电路中高速模数转换器的采样信号，从而进行无源互调信号的数字滤波和幅度计算；另一个接口的作用是通过总线配置无源互调检测电路的参数，例如本振频率，放大器增益，所述总线包括但不限于I2总线、SPI总线；At least two interfaces are provided between the digital processing unit and the passive intermodulation detection circuit: one interface is used to obtain the sampling signal of the high-speed analog-to-digital converter in the passive intermodulation detection circuit, thereby performing the passive intermodulation signal Digital filtering and amplitude calculation; the function of another interface is to configure the parameters of the passive intermodulation detection circuit through the bus, such as local oscillator frequency and amplifier gain. The bus includes but is not limited to I2 bus and SPI bus;

数字处理单元与发射信号鉴频电路1之间还设置有一个接口，用于通过总线配置发射信号鉴频电路1的参数，例如本振频率、链路增益，所述总线包括但不限于I2总线、SPI总线；An interface is also provided between the digital processing unit and the transmission signal frequency discrimination circuit 1 for configuring the parameters of the transmission signal frequency discrimination circuit 1 through the bus, such as local oscillator frequency and link gain. The bus includes but is not limited to the I2 bus , SPI bus;

所述数字处理单元具备至少一个信息交互接口，其作用包含但不限于程序下载，配置信息输入，远程告警和维护；其中需要输入的配置信息包括本装置发射信号带宽和频段、接收信号带宽和频段、无源互调信号中的主要干扰分量的阶次和频段信息、无源互调信号预设值以及随时间变化的曲线、最大抵消次数；所述数字处理单元可以通过信息交互接口获取发射信号频率信息和接收信号频率信息；所述的信息交互接口还可以与互联网后台资源进行数据交互：上传所述设备运行过程中的无源互调值，无源互调值随时间变化的经验曲线，以及无源互调信号自适应抵消装置中各模块电路的状态信息；或者下载综合优化后的无源互调信号预设值以及随时间变化的曲线。The digital processing unit is provided with at least one information interaction interface, and its functions include but are not limited to program download, configuration information input, remote alarm and maintenance; the configuration information that needs to be input includes the transmission signal bandwidth and frequency band of the device, the reception signal bandwidth and frequency band , The order and frequency band information of the main interference components in the passive intermodulation signal, the preset value of the passive intermodulation signal and the time-varying curve, the maximum number of cancellations; the digital processing unit can obtain the transmitted signal through the information interaction interface Frequency information and received signal frequency information; the information interaction interface can also perform data interaction with Internet background resources: upload the passive intermodulation value during the operation of the device, and the experience curve of the passive intermodulation value changing with time, And the status information of each module circuit in the passive intermodulation signal adaptive cancellation device; or download the comprehensively optimized preset value of the passive intermodulation signal and the time-varying curve.

上述技术方案中，所述抵消器电路中的调幅调相器一端直接连接耦合器的耦合端口，或者通过射频开关连接耦合器的耦合端口，另一端连接互调信号发生器。In the above technical solution, one end of the AM phase modulator in the canceller circuit is directly connected to the coupling port of the coupler, or is connected to the coupling port of the coupler through an RF switch, and the other end is connected to an intermodulation signal generator.

上述技术方案中，所述调幅调相器包括调幅电路和调相电路；其中所述调幅电路由可调控衰减器和固定衰减器构成；调相电路2至少包含2个可调控移相器；数字处理单元的输出端分别与调幅电路和调相电路的输入端电；所述调幅调相器的幅度调整范围大于30dB，相位调整范围大于180度；所述抵消器电路中调幅调相器的承载功率大于等于所述抵消器电路的承载功率门限值，所述调幅调相器的工作频段包含所述双工器的发射频段和接收频段，调幅调相器的频带内增益波动与发射频段、接收频段相关且需在一定的门限值范围内。In the above technical solution, the amplitude modulation phase modulator includes an amplitude modulation circuit and a phase modulation circuit; wherein the amplitude modulation circuit is composed of an adjustable attenuator and a fixed attenuator; the phase modulation circuit 2 includes at least two adjustable phase shifters; digital The output end of the processing unit is electrically connected to the input terminals of the amplitude modulation circuit and the phase modulation circuit; the amplitude adjustment range of the amplitude modulation phase modulator is greater than 30dB and the phase adjustment range is greater than 180 degrees; the load of the amplitude modulation phase modulator in the canceler circuit The power is greater than or equal to the load-bearing power threshold of the canceller circuit, the working frequency band of the amplitude modulation phase modulator includes the transmission frequency band and the reception frequency band of the duplexer, the gain fluctuation and the transmission frequency band within the frequency band of the amplitude modulation phase modulator, The receiving frequency band is related and needs to be within a certain threshold.

上述技术方案中，所述抵消器电路中的第二调幅电路3一端通过第一环行器与耦合器的耦合端口连接，或者可以通过第一环行器、射频开关与耦合器的耦合端口连接；另一端通过第二环行器与互调信号发生器连接；所述抵消器电路中的调幅调相器一端通过第二环行器与互调信号发生器连接；另一端通过第一环行器与耦合器的耦合端口连接，或者可以通过第一环行器、射频开关与耦合器的耦合端口连接。In the above technical solution, one end of the second amplitude modulation circuit 3 in the canceller circuit is connected through the coupling port of the first circulator and the coupler, or may be connected through the coupling port of the first circulator and the RF switch and the coupler; One end is connected to the intermodulation signal generator through the second circulator; one end of the amplitude modulation phase modulator in the canceler circuit is connected to the intermodulation signal generator through the second circulator; the other end is connected to the coupler through the first circulator The coupling port is connected, or may be connected to the coupling port of the coupler through the first circulator and the radio frequency switch.

上述技术方案中，所述调幅电路使互调信号发生器承受一个合适功率的射频信号；所述调幅调相器包含调幅电路和调相电路，将互调信号发生器产生的互调信号，进行调幅、调相处理，以便与本装置中双工器及其天线链路产生的无源互调信号进行抵消；所述调幅调相器包括调幅电路和调相电路；数字处理单元的输出端分别与调幅电路、第二调幅电路和调相电路的输入端电连接；所述调幅电路至少包含1个可调控衰减器；所述调相电路至少包含2个可调控移相器；所述调幅电路由固定衰减器或可调控衰减器构成；所述第一环行器和第二环行器5的频率带宽包括所述双工器的发射频段和接收频段；所述调幅调相器的幅度调整范围大于30dB，相位调整范围大于180度，所述调幅调相器的工作频段包含所述双工器的接收频段，调幅调相器的频带内增益波动与接收频段相关且需在一定的门限值范围内；所述抵消器电路中调幅电路的承载功率大于等于所述抵消器电路的承载功率门限值；In the above technical solution, the amplitude modulation circuit allows the intermodulation signal generator to withstand a radio frequency signal of an appropriate power; the amplitude modulation phase modulator includes an amplitude modulation circuit and a phase modulation circuit, which performs the intermodulation signal generated by the intermodulation signal generator Amplitude modulation and phase modulation processing to cancel the passive intermodulation signals generated by the duplexer and its antenna link in the device; the amplitude modulation phase modulator includes an amplitude modulation circuit and a phase modulation circuit; the output ends of the digital processing unit are It is electrically connected to the input terminals of the amplitude modulation circuit, the second amplitude modulation circuit, and the phase modulation circuit; the amplitude modulation circuit includes at least one adjustable attenuator; the phase modulation circuit includes at least two adjustable phase shifters; and the amplitude modulation circuit It is composed of fixed attenuator or adjustable attenuator; the frequency bandwidth of the first circulator and the second circulator 5 includes the transmission frequency band and the reception frequency band of the duplexer; the amplitude adjustment range of the amplitude modulation phase modulator is greater than 30dB, the phase adjustment range is greater than 180 degrees, the working frequency band of the AM phase modulator includes the receiving frequency band of the duplexer, the gain fluctuation within the frequency band of the AM phase modulator is related to the receiving frequency band and needs to be within a certain threshold range Within; the load-bearing power of the amplitude modulation circuit in the canceller circuit is greater than or equal to the load-bearing power threshold of the canceller circuit;

所述互调信号发生器包含但不限于单个二极管、单个三极管或多个二极管的并联构成；二极管具体型号或者三极管具体型号与产生互调信号3阶、5阶或更高阶互调信号的幅值特性和相位特性相关，所述幅值特性和相位特性的需求为互调信号发生器的要求；采用多个同型号二极管并联结构时，将增强互调信号强度；互调信号发生器的承载功率大于等于所述抵消器电路承载功率门限值与从抵消器电路射频输入口到互调信号发生器的链路损耗的差值。The intermodulation signal generator includes, but is not limited to, a single diode, a single transistor, or multiple diodes in parallel; the specific model of the diode or the specific model of the transistor and the amplitude of the intermodulation signal of the third-order, fifth-order, or higher-order intermodulation signal The value characteristic and the phase characteristic are related. The requirements of the amplitude characteristic and the phase characteristic are the requirements of the intermodulation signal generator; when multiple diodes of the same type are connected in parallel, the strength of the intermodulation signal will be enhanced; the load of the intermodulation signal generator The power is greater than or equal to the difference between the power threshold of the canceller circuit and the link loss from the radio frequency input port of the canceller circuit to the intermodulation signal generator.

上述技术方案中，所述无源互调检测电路至少包括低噪声放大器、下变频模块、高速模数转换器；所述无源互调检测电路通过高速模数转换器与所述数字处理单元连接；In the above technical solution, the passive intermodulation detection circuit includes at least a low noise amplifier, a down conversion module, and a high-speed analog-to-digital converter; the passive intermodulation detection circuit is connected to the digital processing unit through a high-speed analog-to-digital converter ;

下变频模块可以将接收的射频信号转换成中频信号，或者将接收的射频信号转换成零中频信号；The down-conversion module can convert the received radio frequency signal into an intermediate frequency signal, or convert the received radio frequency signal into a zero intermediate frequency signal;

高速模数转换器的采样动态范围需大于接收信号的最大功率值和无源互调预设值对应的功率值之间的差值，The sampling dynamic range of the high-speed analog-to-digital converter must be greater than the difference between the maximum power value of the received signal and the power value corresponding to the preset value of passive intermodulation,

所述无源互调检测电路能够采样的最小功率小于等于预设值对应的无源互调功率值，同时该电路可以根据所接收的射频信号总功率的幅值调整链路增益从而避免接收信号或其他信号造成的链路阻塞；所述无源互调检测电路的增益由需求的无源互调预设值、无源互调检测电路中高速模数转换器的最小采样功率、链路噪声系数等确定；所述无源互调检测电路的接收信号功率的最大值大于等于该装置实际对应的通信标准所规定的最大接收信号功率。The minimum power that the passive intermodulation detection circuit can sample is less than or equal to the passive intermodulation power value corresponding to the preset value, and at the same time, the circuit can adjust the link gain according to the amplitude of the total power of the received radio frequency signal to avoid receiving the signal Or other signals, link blocking; the gain of the passive intermodulation detection circuit is preset by the required passive intermodulation, the minimum sampling power of the high-speed analog-to-digital converter in the passive intermodulation detection circuit, and the link noise The coefficient is determined; the maximum value of the received signal power of the passive intermodulation detection circuit is greater than or equal to the maximum received signal power specified by the communication standard corresponding to the device.

上述技术方案中，无源互调检测电路包括依次电连接的低噪声放大器、射频滤波及小信号放大单元、混频器、中频滤波器、中频放大器、模数转换器，本振器与混频器电连接；低噪声放大器的输入端与双工器的输出端电连接；模数转换器的输出端与数字处理单元的输入端电连接。In the above technical solution, the passive intermodulation detection circuit includes a low-noise amplifier, a radio frequency filter and small signal amplification unit, a mixer, an intermediate frequency filter, an intermediate frequency amplifier, an analog-to-digital converter, a local oscillator and a frequency mixer, which are electrically connected in sequence. It is electrically connected; the input end of the low-noise amplifier is electrically connected to the output end of the duplexer; the output end of the analog-to-digital converter is electrically connected to the input end of the digital processing unit.

上述技术方案中，无源互调检测电路包括依次电连接的低噪声放大器、射频滤波及小信号放大单元和下变频及模数转换单元；低噪声放大器的输入端与双工器的输出端电连接；下变频及模数转换单元的输出端与数字处理单元的输入端电连接。In the above technical solution, the passive intermodulation detection circuit includes a low-noise amplifier, a radio frequency filtering and small-signal amplifying unit and a down-conversion and analog-to-digital conversion unit that are electrically connected in sequence; the input end of the low-noise amplifier is electrically connected to the output end of the duplexer Connection; the output of the down-conversion and analog-to-digital conversion unit is electrically connected to the input of the digital processing unit.

本发明提供了一种数字无线收发设备，包括自适应抵消无源互调信号的装置，所述自适应抵消无源互调信号的装置的双工器即是无线收发设备的双工器；所述自适应抵消无源互调信号的装置的无源互调检测电路复用无线收发设备的接收链路的组件或单元，或者在所述无线收发设备内新增无源互调检测电路；所述自适应抵消无源互调信号的装置本装置的发射电路单元复用无线收发设备的发射链路的组件或单元；所述自适应抵消无源互调信号的装置的数字处理单元复用无线收发设备的数字处理单元的组件或单元，或者在所述无线收发设备内新增数字处理单元，所述数字处理单元集成于无线收发设备的整机程序中；所述自适应抵消无源互调信号的装置的耦合器需在所述无线收发设备内新增，且其一个主通路端口和无线收发设备的双工器天线口连接且距离需控制在0到1米范围内，具体长度由无源互调抵消最佳效果确定，耦合器的耦合端口相对于所述无线收发设备发射信号为正向耦合端口；所述自适应抵消无源互调信号的装置的抵消器电路需在所述无线收发设备内新增，且其射频端口和耦合器的耦合端口直接连接，抵消器电路的幅度调整和相位调整由数字处理单元运算输出的幅度、相位控制参数实现；所述自适应抵消无源互调信号的装置本装置的天馈组件和天线即为所述无线收发设备的天线链路上的对应组件和天线；The present invention provides a digital wireless transceiver device, including a device for adaptively canceling passive intermodulation signals. The duplexer of the device for adaptively canceling passive intermodulation signals is a duplexer of wireless transceiver equipment; The passive intermodulation detection circuit of the device for adaptively canceling the passive intermodulation signal multiplexes the components or units of the receiving link of the wireless transceiver equipment, or adds a passive intermodulation detection circuit in the wireless transceiver equipment; The device for adaptively canceling passive intermodulation signals The component or unit of the transmission circuit unit of the device multiplexes the transmission link of the wireless transceiver equipment; the digital processing unit of the device for adaptively canceling passive intermodulation signals multiplexes the wireless Components or units of the digital processing unit of the transceiver device, or a new digital processing unit added to the wireless transceiver device, the digital processing unit is integrated into the overall program of the wireless transceiver device; the adaptive cancellation passive intermodulation The coupler of the signal device needs to be newly added in the wireless transceiver equipment, and its main channel port is connected to the duplexer antenna port of the wireless transceiver equipment and the distance needs to be controlled in the range of 0 to 1 meter. The best effect of source intermodulation cancellation is determined. The coupling port of the coupler is a forward coupling port relative to the signal transmitted by the wireless transceiver device; the canceler circuit of the device for adaptively canceling passive intermodulation signals needs to be in the wireless Newly added in the transceiver equipment, and the RF port and the coupling port of the coupler are directly connected, the amplitude adjustment and phase adjustment of the canceller circuit are realized by the amplitude and phase control parameters calculated by the digital processing unit; the adaptive cancellation passive mutual Signal modulation device The antenna feed component and antenna of the device are the corresponding components and antennas on the antenna link of the wireless transceiver device;

当无线收发设备有多个收发链路时，所述每一收发链路中双工器的每个天线口后均紧邻一个耦合器，以及抵消器电路。When the wireless transceiver device has multiple transceiver links, each antenna port of the duplexer in each transceiver link is immediately adjacent to a coupler and a canceller circuit.

本发明提供了一种自适应抵消无线收发***中无源互调信号的方法，其特征在于：该方法包括以下步骤，The invention provides a method for adaptively canceling passive intermodulation signals in a wireless transceiver system, characterized in that the method includes the following steps,

S1：通过数字处理单元获取发射信号带宽和频段、接收信号带宽和频段、无源互调信号中的主要干扰分量的阶次和频段信息、期望的无源互调预设值以及随时间变化的曲线、幅度和相位的初始经验数据、最大抵消次数等信息，并转换成相应的配置参数；S1: Obtain the transmitted signal bandwidth and frequency band, the received signal bandwidth and frequency band, the order and frequency band information of the main interference components in the passive intermodulation signal, the expected passive intermodulation preset value and the time-varying through the digital processing unit The initial empirical data of the curve, amplitude and phase, the maximum number of cancellations and other information, and converted into the corresponding configuration parameters;

S2：依据步骤S1中有关发射信号的配置参数，数字处理单元求得无源互调信号的频点并转换成相应数字滤波参数存储入参量配置表中；S2: According to the configuration parameters of the transmitted signal in step S1, the digital processing unit obtains the frequency point of the passive intermodulation signal and converts it into the corresponding digital filtering parameter and stores it in the parameter configuration table;

S3：依据步骤S1中有关接收信号的配置参数、无源互调信号的配置参数以及由步骤S2中获取的无源互调信号的数字滤波参数，数字处理单元对无源互调检测电路的采样信号进行数字滤波，滤除除无源互调信号以外的其他信号分量，求得落入到接收频段的无源互调信号的幅度值；所述求幅度值的算法包括但不限于分段积分法、依据信号带宽的直接积分法；S3: the digital processing unit samples the passive intermodulation detection circuit according to the configuration parameters of the received signal, the configuration parameters of the passive intermodulation signal in step S1, and the digital filtering parameters of the passive intermodulation signal obtained in step S2 The signal is digitally filtered to filter out other signal components except the passive intermodulation signal, and the amplitude value of the passive intermodulation signal that falls into the receiving frequency band is obtained; the algorithm for determining the amplitude value includes but is not limited to segmented integration Method, direct integration method based on signal bandwidth;

S4：判断当前工作状态；所述工作状态的状态标识默认值是：“初始工作模式”；如果工作状态的状态标识值是“初始工作模式”则继续步骤S5-1，否则继续步骤S5-2；S4: determine the current working state; the default value of the state identification of the working state is: "initial working mode"; if the state identification value of the working state is "initial working mode", continue to step S5-1, otherwise continue to step S5-2 ;

S5-1：将步骤S3获取的无源互调信号幅度值与步骤S1中的无源互调预设值进行对比以判断无源互调信号幅度是否小于等于的无源互调预设值；S5-1: Compare the passive intermodulation signal amplitude value obtained in step S3 with the passive intermodulation preset value in step S1 to determine whether the passive intermodulation signal amplitude is less than or equal to the passive intermodulation preset value;

S6：如果步骤S5-1的判断结果为“是”，则抵消器电路继续保持互调信号发生器与耦合器之间链路高隔离度状态；并返回步骤S2；S6: If the judgment result of step S5-1 is "Yes", the canceller circuit continues to maintain the high isolation state of the link between the intermodulation signal generator and the coupler; and returns to step S2;

S7：如果步骤S5-1的判断结果为“否”，则抵消器电路切换到互调信号发生器与耦合器之间链路低隔离度状态；且将工作状态的状态标识值并设置为“抵消工作状态”；继续执行步骤S8；S7: If the judgment result of step S5-1 is "No", the canceller circuit is switched to the low isolation state of the link between the intermodulation signal generator and the coupler; and the state identification value of the working state is set to " Offset working status"; continue to step S8;

S5-2：将步骤S3获取的无源互调信号幅度值与步骤S1中的无源互调预设值进行对比以判断无源互调信号幅度是否小于等于的无源互调预设值；如果步骤S5-2的判断结果为“是”，则保持状态，并返回步骤S2；如果步骤S5-2的判断结果为“否”，则执行步骤S8；S5-2: Compare the amplitude value of the passive intermodulation signal obtained in step S3 with the preset value of the passive intermodulation signal in step S1 to determine whether the amplitude of the passive intermodulation signal is less than or equal to the preset value of passive intermodulation; If the judgment result of step S5-2 is "Yes", then maintain the state and return to step S2; if the judgment result of step S5-2 is "No", then execute step S8;

S8：依据步骤S3的无源互调信号的幅度值推算抵消器电路的幅度、相位调整值；并配送给抵消器电路中的调幅器、调相器，实施抵消；在完成当前一轮抵消处理后，将继续回到步骤S2继续下一轮的抵消处理；所述求幅度、相位调整值的算法包括但不限于二维最小方差演算法。S8: Calculate the amplitude and phase adjustment values of the canceller circuit according to the amplitude value of the passive intermodulation signal in step S3; and distribute to the amplitude modulator and phase modulator in the canceller circuit to implement cancellation; after completing the current round of cancellation processing After that, it will continue to return to step S2 to continue the next round of cancellation processing; the algorithm for determining the amplitude and phase adjustment values includes but is not limited to a two-dimensional minimum variance algorithm.

本发明可以应用于数字无线收发设备及其天线链路以便抵消无源器件产生的不合格的无源互调使无线收发设备及其天线链路的无源互调指标满足无源互调预设值；并且当多个无线收发设备同时使用且每个设备的天线链路通过合路器合路后连接天线时，对应于每条天线链路的本装置也可以抵消该天线链路上的无源器件产生的不合格的无源互调使无线收发设备及其天线链路的无源互调指标满足无源互调预设值；所述数字无线收发设备包括但不限于射频拉远单元、直放站、无线电台等设备，所述天线链路包含但不限于电缆、连接器、耦合器、合路器、天线。本发明能将无线收发设备产生的无源互调信号以及无线收发设备天线口之后链路中任何一个设备或组件产生的无源互调信号落入到接收频段的分量在无线收发设备中的射频链路上抵消，并且在所述无源器件的接收端口获得优于预定的无源互调要求指标的结果。本发明使得在保持***无源互调指标不变情况下，可以降低对无线收发***中各个器件的无源互调指标要求，从而降低各个无源器件的制造成本。上述效果同时也可以用来消除由于双工器或其天线链路上所述组件或天线随工作时间增长而出现的无源互调指标恶化的影响，从而延长该无线收发***的生命周期。本发明还可以在所述***需要更好无源互调指标时，提升该指标到预设值以上；当进行无线收发设备的双工器及其天线链路的无源互调抵消并在所述双工器接收端口获得优于预定的无源互调要求指标的结果时，不会对发射信号线性性能和接收信号线性性能产生不良影响。由于本发明采用了有源互调抵消电路，使得信号相位、幅度的调节可以量化，提高了调整精度和准度。同时由于本发明采用了无源互调信号抵消效果的反馈链路，使得无源互调信号抵消效果可以被实时监测并自适应的动态调整，以便当通过所述无源器件或后续链路上的信号的功率等级、工作频率发生变化时，以及环境温度等发生变化时，可以动态、实时响应，使无源互调信号抵消结果满足预期目标值。由此重要的实用意义。The invention can be applied to digital wireless transceiver equipment and its antenna link in order to counteract the unqualified passive intermodulation generated by passive devices, so that the passive intermodulation index of the wireless transceiver equipment and its antenna link meets the passive intermodulation preset Value; and when multiple wireless transceiver devices are used at the same time and the antenna link of each device is connected through the combiner to connect the antenna, the device corresponding to each antenna link can also cancel the The unqualified passive intermodulation generated by the source device makes the passive intermodulation index of the wireless transceiver device and its antenna link meet the preset value of passive intermodulation; the digital wireless transceiver device includes but is not limited to a remote radio unit, For repeater stations, radio stations and other equipment, the antenna link includes but is not limited to cables, connectors, couplers, combiners, and antennas. The invention can pass the passive intermodulation signal generated by the wireless transceiver device and the passive intermodulation signal generated by any device or component in the link behind the antenna port of the wireless transceiver device into the radio frequency of the component of the receiving frequency band in the wireless transceiver device The link is cancelled, and a result that is better than a predetermined passive intermodulation requirement index is obtained at the receiving port of the passive device. The present invention makes it possible to reduce the passive intermodulation index requirements for each device in the wireless transceiver system while keeping the system passive intermodulation index unchanged, thereby reducing the manufacturing cost of each passive device. The above effect can also be used to eliminate the effect of deterioration of the passive intermodulation index due to the increase in working time of the components or antennas on the duplexer or its antenna link, thereby extending the life cycle of the wireless transceiver system. The present invention can also increase the index to a value above a preset value when the system needs a better passive intermodulation index; when the passive intermodulation of the duplexer of the wireless transceiver device and its antenna link cancels and is in place When the receiving port of the duplexer obtains a result that is better than a predetermined passive intermodulation requirement index, it will not adversely affect the linear performance of the transmitted signal and the linear performance of the received signal. Since the invention adopts an active intermodulation cancellation circuit, the adjustment of the signal phase and amplitude can be quantified, and the adjustment accuracy and precision are improved. At the same time, the present invention uses a feedback link for passive intermodulation signal cancellation effect, so that the passive intermodulation signal cancellation effect can be monitored in real time and adaptively adjusted dynamically, so as to pass through the passive device or subsequent link When the power level, operating frequency of the signal changes, and the ambient temperature changes, it can respond dynamically and in real time to make the passive intermodulation signal cancellation result meet the expected target value. This has important practical significance.

附图说明BRIEF DESCRIPTION

图1是本发明结构示意图。Figure 1 is a schematic diagram of the present invention.

图2是本发明实施例中抵消器电路B的第一种结构示意图。FIG. 2 is a schematic diagram of the first structure of the canceller circuit B in the embodiment of the present invention.

图3是本发明实施例中抵消器电路B的第二种结构示意图。3 is a schematic diagram of a second structure of the canceller circuit B in the embodiment of the present invention.

图4是本发明实施例中无源互调检测电路D的超外差结构示意图。4 is a schematic diagram of the superheterodyne structure of the passive intermodulation detection circuit D in the embodiment of the present invention.

图5是本发明实施例中无源互调检测电路D的接收零中频结构示意图。FIG. 5 is a schematic diagram of the structure of the receiving zero intermediate frequency of the passive intermodulation detection circuit D in the embodiment of the present invention.

图6本发明实施例中一种自适应抵消无线收发***中无源互调信号的方法的流程图。6 is a flowchart of a method for adaptively canceling passive intermodulation signals in a wireless transceiver system according to an embodiment of the present invention.

表1是本发明实施例装置的一个无源互调抵消测试记录。Table 1 is a passive intermodulation cancellation test record of the device of the embodiment of the present invention.

图7是本发明实施例装置3阶分量的抵消效果图。7 is a graph of the effect of canceling the third-order components of the device of the embodiment of the present invention.

图8是本发明实施例装置在3阶分量抵消后的5阶分量的抵消效果图。FIG. 8 is a diagram of the cancellation effect of the fifth-order component after the cancellation of the third-order component of the device of the embodiment of the present invention.

图9是本发明实施例一种具有自适应抵消无源互调信号功能的无线收发设备的结构示意图。9 is a schematic structural diagram of a wireless transceiver device with an adaptive cancellation passive intermodulation signal function according to an embodiment of the present invention.

图10是本发明实施例应用于无线收发设备后的3阶分量的抵消效果图。FIG. 10 is a diagram of the cancellation effect of the third-order component after the embodiment of the present invention is applied to a wireless transceiver device.

图11是本发明实施例用于无线收发设备后未开启无源互调抵消功能时的双载波发射信号中低频点信号ACPR测试结果图。FIG. 11 is an ACPR test result diagram of a low-frequency point signal in a dual-carrier transmission signal when the passive intermodulation cancellation function is not turned on after being used in a wireless transceiver device according to an embodiment of the present invention.

图12是本发明实施例用于无线收发设备后未开启无源互调抵消功能时的双载波发射信号中高频点信号ACPR测试结果图。12 is an ACPR test result diagram of a high-frequency point signal in a dual-carrier transmission signal when the passive intermodulation cancellation function is not turned on after being used in a wireless transceiver device according to an embodiment of the present invention.

图13是本发明实施例用于无线收发设备后开启无源互调抵消功能时的双载波发射信号中低频点信号ACPR测试结果图。13 is an ACPR test result diagram of a low-frequency point signal in a dual-carrier transmission signal when a passive intermodulation cancellation function is enabled after a wireless transceiver device is used in an embodiment of the present invention.

图14是本发明实施例用于无线收发设备后开启无源互调抵消功能时的双载波发射信号中高频点信号ACPR测试结果图。14 is an ACPR test result diagram of a high-frequency point signal in a dual-carrier transmission signal when the passive intermodulation cancellation function is turned on after the wireless transceiver device is used in an embodiment of the present invention.

图15是本发明实施例用于无线收发设备后未开启无源互调抵消功能时，再将接收信号环回到发射链路时的低频点信号EVM测试结果图。15 is an EVM test result diagram of a low-frequency point signal when the passive intermodulation cancellation function is not enabled after the wireless transceiver device according to an embodiment of the present invention is used, and then the received signal is looped back to the transmit link.

图16是本发明实施例用于无线收发设备后未开启无源互调抵消功能时，再将接收信号环回到发射链路时的高频点信号EVM测试结果图。16 is an EVM test result diagram of a high-frequency point signal when the passive intermodulation cancellation function is not enabled after the wireless transceiver device according to an embodiment of the present invention is used, and then the received signal is looped back to the transmit link.

图17是本发明实施例用于无线收发设备后开启无源互调抵消功能时，再将接收信号环回到发射链路时的低频点信号EVM测试结果图。FIG. 17 is an EVM test result diagram of a low-frequency point signal when the passive intermodulation cancellation function is turned on after the wireless transceiver device is used in the embodiment of the present invention, and then the received signal is looped back to the transmit link.

图18是本发明实施例用于无线收发设备后开启无源互调抵消功能时，再将接收信号环回到发射链路时的高频点信号EVM测试结果图。18 is an EVM test result diagram of a high-frequency point signal when the passive intermodulation cancellation function is turned on after the wireless transceiver device is used in the embodiment of the present invention, and then the received signal is looped back to the transmit link.

图19是本发明实施例一种能自适应抵消无源互调信号的无线直放站的结构示意图。19 is a schematic structural diagram of a wireless repeater capable of adaptively canceling passive intermodulation signals according to an embodiment of the present invention.

图20是本发明实施例中无线收发设备与多个收发链路使用实例之一的示意图。20 is a schematic diagram of one example of use of a wireless transceiver device and multiple transceiver links in an embodiment of the present invention.

图21是本发明实施例中无线收发设备具有多个收发链路使用实例之一的示意图21 is a schematic diagram of one example of use of a wireless transceiver device having multiple transceiver links in an embodiment of the present invention

具体实施方式detailed description

下面结合附图和具体实施例对本发明作进一步的详细说明，便于清楚地了解本发明，但它们不对本发明构成限定。The present invention will be further described in detail below in conjunction with the drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

如图1所示，本发明涉及一种自适应抵消无源互调信号的装置，它包括一个耦合器A，抵消器电路B，无源互调检测电路D，数字处理单元E，双工器A0，发射电路单元F，天馈组件A2，天线A1；所述装置中的双工器A0代表无线收发设备中的无源器件；所述天馈组件A2和天线A1代表无线收发***的天线链路中的无源器件，其中天馈组件A2代表天线链路中单个或多个无源器件的组合，这些无源器件包括但不限于电缆、连接器、耦合器、合路器。As shown in FIG. 1, the present invention relates to an apparatus for adaptively canceling passive intermodulation signals, which includes a coupler A, a canceler circuit B, a passive intermodulation detection circuit D, a digital processing unit E, and a duplexer A0, transmitting circuit unit F, antenna feeder component A2, antenna A1; the duplexer A0 in the device represents a passive device in the wireless transceiver equipment; the antenna feeder component A2 and the antenna A1 represent the antenna chain of the wireless transceiver system Passive devices in the circuit, where the antenna feed component A2 represents a combination of single or multiple passive devices in the antenna link. These passive devices include but are not limited to cables, connectors, couplers, and combiners.

所述发射电路单元F的大于40dBm的发射信号，所述发射信号由多音信号构成或者由多载波调制信号构成。上述发射信号使所述双工器A0及其天线链路上的天馈组件A2或天线A1产生无源互调信号，并且该无源互调信号中有落入到双工器A0接收频段的且与接收信号有一定频率间隔的分量，依据发射信号的不同配置可以使所述无源互调信号落入双工器A0接收频段的分量包含单个3阶分量、或单个5阶分量、甚至或单个更高阶次分量、或多个不同频率3阶分量、或多个不同频率5阶分量、甚至或多个不同频率的更高阶次分量、或同时有3阶分量和5阶分量甚至高阶次分量；当上述无源互调信号中仅有单个3阶、或单个5阶或单个更高阶次分量落入双工器A0的接收频带且造成从双工器A0接收端口测试的无源互调指标达不到预设值要求时，为使所述双工器A0接收端口的无源互调值满足预设值要求且使本装置的抵消能力大于20dB。本实施例中，发射频段为925MHz到960MHz，接收频段为880MHz到915MHz。A transmission signal of the transmission circuit unit F greater than 40 dBm, the transmission signal is composed of a multi-tone signal or a multi-carrier modulation signal. The above-mentioned transmission signal causes the duplexer A0 and the antenna feed component A2 or antenna A1 on the antenna link to generate a passive intermodulation signal, and some of the passive intermodulation signals fall into the receiving band of the duplexer A0 And the component with a certain frequency interval from the received signal, according to the different configuration of the transmitted signal, the component of the passive intermodulation signal that falls into the receiving band of the duplexer A0 contains a single third-order component, or a single fifth-order component, or even A single higher-order component, or multiple third-order components of different frequencies, or multiple fifth-order components of different frequencies, or even multiple higher-order components of different frequencies, or both a third-order component and a fifth-order component or even high Order component; when only a single 3rd order, or a single 5th order or a single higher order component of the above-mentioned passive intermodulation signal falls into the receiving band of the duplexer A0 and causes no test from the receiving port of the duplexer A0 When the source intermodulation index fails to meet the preset value requirement, in order to make the passive intermodulation value of the receiving port of the duplexer A0 meet the preset value requirement and make the cancellation capability of the device greater than 20dB. In this embodiment, the transmission frequency band is 925MHz to 960MHz, and the reception frequency band is 880MHz to 915MHz.

所述耦合器A从双工器A0的天线口的链路上耦合射频信号输出给抵消器电路B；所述射频信号中包含发射信号、无源互调信号和接收信号；所述耦合器A的一个主通路端口与所述双工器A0的天线口连接、另一个主通路端口与天线链路上的天馈组件A2连接、耦合器A的耦合端口和抵消器电路B的射频端口连接；所述耦合器A与双工器A0天线口的距离需控制在0到1米范围内，具体长度由无源互调抵消最佳效果确定。耦合器A的另一个主通路端口与天馈组件A2连接，耦合器A的耦合端口连接抵消器电路B；所述耦合器A的***损耗小于0.2dB，耦合器A的耦合度范围为25dB到45dB。本实施例中所述耦合器A紧邻双工器A0天线口，也即距离为0米。The coupler A couples the radio frequency signal from the link of the antenna port of the duplexer A0 to the canceler circuit B; the radio frequency signal includes a transmission signal, a passive intermodulation signal, and a reception signal; the coupler A One main path port is connected to the antenna port of the duplexer A0, the other main path port is connected to the antenna feed component A2 on the antenna link, the coupling port of the coupler A and the radio frequency port of the canceller circuit B; The distance between the antenna port of the coupler A and the duplexer A0 needs to be controlled within the range of 0 to 1 meter, and the specific length is determined by the best effect of passive intermodulation cancellation. The other main channel port of coupler A is connected to antenna feed component A2, and the coupling port of coupler A is connected to canceler circuit B; the insertion loss of coupler A is less than 0.2dB, and the coupling degree of coupler A ranges from 25dB to 45dB. In this embodiment, the coupler A is close to the antenna port of the duplexer A0, that is, the distance is 0 meters.

所述抵消器电路B将利用来自于耦合器A的射频信号中的发射信号在所述互调信号发生器B2上产生出与所述射频信号中的无源互调信号频率相同、幅度不同和相位不同的互调信号，且该互调信号中落入接收频段的单个3阶分量、或单个5阶分量、或单个更高阶次分量，或者多个不同频点的3阶分量、或多个不同频点的5阶分量、或多个不同频点的更高阶次分量，或者同时有3阶分量、5阶分量甚至更高阶次分量之间的幅度关系和相位关系与所述双工器A0及其天线链路产生的无源互调信号中落入接收频段的单个3阶分量、或单个5阶分量、或单个更高阶次分量，或者多个不同频点的3阶分量、或多个不同频点的5阶分量、或多个不同频点的更高阶次分量，或者同时有3阶分量、5阶分量甚至更高阶次分量之间的幅值关系和相位关系基本一致；而耦合到抵消器电路B的射频信号中的接收信号和无源互调信号的功率在所述互调信号发生器B2上产生的互调信号的幅值远小于上述无源互调信号的幅值，不对无源互调抵消结果产生影响；所述互调信号反射后通过调幅调相器B1的幅度调整和相位调整，并耦合输出至耦合器A的主通路，形成与所述无源互调信号中落入接收频段的且与接收信号有一定频率间隔的分量频率相同、幅度相同和相位相反的互调抵消信号，该互调抵消信号与所述无源互调信号中的分量进行抵消，抵消后的无源互调信号小于等于无源互调预设值；同时双工器A0及其天线链路中的发射信号和接收信号在双工器A0及其天线链路中正常运作；此外，所述互调信号发生器B2所能产生的所述互调抵消信号的最大幅值要大于所述双工器A0及其天线链路的无源互调信号中落入到接收频段对应频率的单个分量的幅值。The canceller circuit B will use the transmission signal from the radio frequency signal from the coupler A to generate on the intermodulation signal generator B2 the same frequency, different amplitude and amplitude as the passive intermodulation signal in the radio frequency signal Intermodulation signals with different phases, and the intermodulation signal in the intermodulation signal falls into a single third-order component, or a single fifth-order component, or a single higher-order component, or multiple third-order components at different frequencies, or more 5th-order components at different frequency points, or higher-order components of multiple different frequency points, or there are simultaneous 3rd-order components, 5th-order components and even higher-order components. A single third-order component, or a single fifth-order component, or a single higher-order component in the passive intermodulation signal generated by the worker A0 and its antenna link that falls into the receiving frequency band, or multiple third-order components at different frequencies , Or 5th-order components of multiple different frequency points, or higher-order components of multiple different frequency points, or there are amplitude relationships and phase relationships between 3rd-order components, 5th-order components and even higher-order components at the same time Basically the same; while the power of the received signal and the passive intermodulation signal in the radio frequency signal coupled to the canceller circuit B generates an amplitude of the intermodulation signal on the intermodulation signal generator B2 that is much smaller than that of the passive intermodulation The amplitude of the signal does not affect the result of passive intermodulation cancellation; after the intermodulation signal is reflected, it passes through the amplitude adjustment and phase adjustment of the amplitude modulation phase modulator B1, and is coupled out to the main path of the coupler A, forming a An intermodulation cancellation signal in the passive intermodulation signal that falls into the receiving frequency band and has a certain frequency interval from the received signal with the same frequency, the same amplitude, and the opposite phase. The intermodulation cancellation signal and the passive intermodulation signal The components are cancelled, and the passive intermodulation signal after cancellation is less than or equal to the preset value of passive intermodulation; at the same time, the transmitted and received signals in the duplexer A0 and its antenna link are in the duplexer A0 and its antenna link Normal operation; in addition, the maximum amplitude of the intermodulation cancellation signal that the intermodulation signal generator B2 can generate is greater than that of the passive intermodulation signal of the duplexer A0 and its antenna link. The amplitude of a single component of the corresponding frequency of the receiving band.

对于上述三种情况，实际选择构成互调信号发生器B2的具体器件时，应使所述互调信号发生器B2上产生出与所述射频信号中的无源互调信号频率相同、幅度不同和相位不同的互调信号，且该互调信号中落入接收频段的单个3阶分量、或单个5阶分量、或单个更高阶次分量，或者多个不同频点的3阶分量、或多个不同频点的5阶分量、或多个不同频点的更高阶次分量，或者同时有3阶分量、5阶分量甚至更高阶次分量之间的幅度关系和相位关系与所述双工器A0及其天线链路产生的无源互调信号中落入接收频段的单个3阶分量、或单个5阶分量、或单个更高阶次分量，或者多个不同频点的3阶分量、或多个不同频点的5阶分量、或多个不同频点的更高阶次分量，或者同时有3阶分量、5阶分量甚至更高阶次分量之间的幅值关系和相位关系基本一致；而且所述互调信号发生器B2所能产生的对应无源互调分量频率的所述互调抵消信号的最大幅值要大于所述双工器A0及其天线链路的无源互调信号中落入到接收频段的多个对应频率分量的幅值；For the above three cases, when actually selecting the specific device that constitutes the intermodulation signal generator B2, the intermodulation signal generator B2 should generate the same frequency and different amplitude as the passive intermodulation signal in the radio frequency signal. An intermodulation signal with a different phase and a single third-order component, or a single fifth-order component, or a single higher-order component, or multiple third-order components at multiple different frequencies, or The 5th order components of multiple different frequency points, or the higher order components of multiple different frequency points, or the amplitude relationship and phase relationship between the 3rd order component, 5th order component and even higher order component at the same time The passive intermodulation signal generated by the duplexer A0 and its antenna link falls into a single 3rd-order component, or a single 5th-order component, or a single higher-order component of the receiving frequency band, or a third-order of multiple different frequency points Components, or 5th-order components at multiple different frequency points, or higher-order components at multiple different frequency points, or there are simultaneous amplitude relationships and phases between 3rd-order components, 5th-order components, and even higher-order components The relationship is basically the same; and the maximum amplitude of the intermodulation cancellation signal corresponding to the frequency of the passive intermodulation component that the intermodulation signal generator B2 can generate is greater than that of the duplexer A0 and its antenna link. The amplitude of multiple corresponding frequency components that fall into the receiving frequency band in the source intermodulation signal;

在上述三种情况中，所述调幅调相器B1的幅度调整和相位调整通过数字处理单元E运算输出的幅度、相位控制参数实现；而数字处理单元E的幅度、相位控制参数的计算又需要无源互调检测电路D的采样信号。对于双工器A0及其天线链路上的天馈组件A2和天线A1等无源器件，所述无源互调抵消功能作用之一是降低对所述无源器件的无源互调指标要求，作用之二是消除所述无源器件随工作时间增长而出现的无源互调指标恶化的影响，作用之三是提升所述无源器件的无源互调指标；In the above three cases, the amplitude adjustment and phase adjustment of the AM phase modulator B1 are realized by the amplitude and phase control parameters calculated by the digital processing unit E; and the calculation of the amplitude and phase control parameters of the digital processing unit E requires The sampling signal of the passive intermodulation detection circuit D. For passive devices such as antenna feeder A2 and antenna A1 on the duplexer A0 and its antenna link, one of the functions of the passive intermodulation cancellation function is to reduce the passive intermodulation index requirements for the passive device The second role is to eliminate the deterioration of the passive intermodulation index of the passive device with the increase of working time, and the third role is to improve the passive intermodulation index of the passive device;

所述无源互调检测电路D，作用是将所述双工器A0接收端口后的射频信号经过增益可调控的放大，下变频，最终转换成数字信号并输入到数字处理单元E。所述无源互调检测电路D的射频端口直接与双工器A0接收端口连接，该电路获得的射频信号包含接收信号和无源互调信号中落入接收频段的分量，且该电路的接收动态范围大于接收信号的最大功率值和无源互调预设值对应的功率值之间的差值；所述无源互调检测电路D通过高速模数转换器与所述数字处理单元E连接，高速模数转换器的采样速率大于等于2倍的双工器A0接收频段带宽。The passive intermodulation detection circuit D is used to amplify the radio frequency signal after the receiving port of the duplexer A0 with adjustable gain, down-convert, and finally convert it into a digital signal and input it to the digital processing unit E. The radio frequency port of the passive intermodulation detection circuit D is directly connected to the receiving port of the duplexer A0. The radio frequency signal obtained by the circuit contains components of the received signal and the passive intermodulation signal that fall into the receiving frequency band, and the circuit receives The dynamic range is greater than the difference between the maximum power value of the received signal and the power value corresponding to the preset value of passive intermodulation; the passive intermodulation detection circuit D is connected to the digital processing unit E through a high-speed analog-to-digital converter The sampling rate of the high-speed analog-to-digital converter is greater than or equal to 2 times the duplexer A0 receiving band bandwidth.

当无源互调检测电路D中的射频信号过大造成链路阻塞时，数字处理单元E将缩小无源互调检测电路D的链路增益以便正常处理接收信号并停止检测无源互调信号幅值；当无源互调检测电路D没有阻塞时，所述数字处理单元E在进行无源互调幅值计算过程中，需要处理的来源于无源互调检测电路D的信号中包含有无源互调信号和接收信号且无源互调信号和接收信号之间有一定频率间隔；计算无源互调信号幅值的方法为：数字处理单元E首先依据发射信号频率信息计算出与之相关的无源互调信号的频率信息，然后依据接收信号频率、带宽信息与无源互调信号频率、带宽信息求得它们之间的频率间隔，并依据该频率间隔选择合适的算法计算无源互调信号幅值；所述计算无源互调信号幅值的算法包含但不限于直接滤波积分法和分段滤波积分法：所述直接滤波积分法是指依据无源互调信号带宽直接数字滤波并积分求幅度，此时所述无源互调信号落入到接收频段的各阶次分量与接收信号之间的频率间隔要大于等于无源互调信号的数字滤波算法中数字滤波器通带到阻带的过渡带带宽，此频率间隔即是采用直接滤波积分法的依据；所述分段滤波积分法是指将无源互调信号带宽分成数个子带宽，依据每个子带宽进行数字滤波并积分求幅度，再将所有子带宽对应的幅度进行累加获得整个信号幅值，此时所述各阶次分量与接收信号之间的频率间隔要大于等于各阶次分量边子带信号的数字滤波器通带到阻带的过渡带带宽，此频率间隔即是采用分段滤波积分法的依据。When the radio frequency signal in the passive intermodulation detection circuit D is too large and the link is blocked, the digital processing unit E will reduce the link gain of the passive intermodulation detection circuit D to process the received signal normally and stop detecting the passive intermodulation signal Amplitude; when the passive intermodulation detection circuit D is not blocked, the digital processing unit E needs to process the signal from the passive intermodulation detection circuit D in the process of calculating the passive intermodulation amplitude The passive intermodulation signal and the received signal and there is a certain frequency interval between the passive intermodulation signal and the received signal; the method of calculating the amplitude of the passive intermodulation signal is: the digital processing unit E first calculates the Relevant frequency information of passive intermodulation signal, then according to the received signal frequency, bandwidth information and passive intermodulation signal frequency, bandwidth information to find the frequency interval between them, and select an appropriate algorithm to calculate the passive according to the frequency interval The amplitude of the intermodulation signal; the algorithm for calculating the amplitude of the passive intermodulation signal includes but is not limited to the direct filter integration method and the segmented filter integration method: the direct filter integration method refers to the direct digital according to the passive intermodulation signal bandwidth Filter and integrate to find the amplitude. At this time, the frequency interval between each order component of the passive intermodulation signal falling into the receiving frequency band and the received signal should be greater than or equal to the digital filter algorithm of the passive intermodulation signal. The bandwidth of the transition band to the stop band, this frequency interval is the basis of the direct filter integration method; the segmented filter integration method refers to dividing the passive intermodulation signal bandwidth into several sub-bandwidths, and performing digital filtering according to each sub-bandwidth Integrate to find the amplitude, and then accumulate the amplitudes corresponding to all sub-bandwidths to obtain the entire signal amplitude. At this time, the frequency interval between each order component and the received signal should be greater than or equal to the number of the side subband signals of each order component The bandwidth of the transition band from the pass band of the filter to the stop band, and this frequency interval is the basis of the segmented filtering integration method.

所述数字处理单元E首先依据发射信号频率信息，计算出与之相关的无源互调信号的频率信息，并将其转换为无源互调信号的滤波参数，然后依据接收信号频率、带宽信息与无源互调信号频率、带宽信息求得它们之间的频率间隔，再选择相应的数字滤波方式和积分方式，最终实现对无源互调信号的幅值检测；然后将所述无源互调信号的检测幅值与无源互调预设值进行对比：当所述检测幅值小于等于所述预设值时，所述抵消器电路B不产生互调抵消信号，不对所述双工器A0及其天线链路的无源互调指标产生影响；当所述检测幅值大于所述预设值时，控制所述抵消器电路B对其幅度和相位的调整产生出与所述双工器A0及其天线链路的无源互调信号频率相同、幅度相同和相位相反的互调抵消信号与所述射频信号中的无源互调信号进行抵消，并保持这种依据无源互调信号的幅值检测结果实时调控所述抵消器电路B幅度和相位使无源互调信号抵消结果小于等于所述预设值的工作状态。The digital processing unit E first calculates the frequency information of the passive intermodulation signal related to it based on the frequency information of the transmitted signal, and converts it into the filtering parameter of the passive intermodulation signal, and then based on the received signal frequency and bandwidth information Obtain the frequency interval between them with the frequency and bandwidth information of the passive intermodulation signal, and then select the corresponding digital filtering method and integration method to finally realize the amplitude detection of the passive intermodulation signal; and then the passive intermodulation signal The detected amplitude of the modulated signal is compared with the preset value of passive intermodulation: when the detected amplitude is less than or equal to the preset value, the canceller circuit B does not generate an intermodulation cancellation signal, and the duplex A0 and the passive intermodulation index of its antenna link have an impact; when the detected amplitude is greater than the preset value, the cancellation circuit B is controlled to adjust its amplitude and phase The passive intermodulation signals with the same frequency, the same amplitude and the opposite phase of the passive intermodulation signals of the tool A0 and its antenna link cancel with the passive intermodulation signals in the radio frequency signal, and maintain this basis The amplitude detection result of the modulation signal adjusts the amplitude and phase of the canceller circuit B in real time so that the passive intermodulation signal cancellation result is less than or equal to the working state of the preset value.

所述数字处理单元E获取所述发射信号频率信息和接收信号频率信息的一种方法是利用发射信号鉴频电路E1从所述装置的发射电路单元F上获取发射信号，转换为数字信号，输入数字处理单元E进行鉴频处理，获取相关发射信号频率信息，并由发射信号和接收信号之间的双工频率间隔推算相应接收信号频率信息；获取所述发射信号频率信息和接收信号频率信息的另一种方法是通过数字处理单元E中的信息交互接口直接从该装置的输入信息中获取。One method for the digital processing unit E to obtain the transmitted signal frequency information and the received signal frequency information is to use the transmitted signal discriminator circuit E1 to obtain the transmitted signal from the transmitting circuit unit F of the device, convert it into a digital signal, and input The digital processing unit E performs frequency discrimination processing to obtain relevant transmission signal frequency information, and estimates the corresponding reception signal frequency information from the duplex frequency interval between the transmission signal and the reception signal; acquiring the transmission signal frequency information and the reception signal frequency information Another method is to obtain directly from the input information of the device through the information interaction interface in the digital processing unit E.

本实施例中，所述抵消器电路B通过耦合器A与双工器A0天线口后的天线链路连接；所述耦合器A的一个主通路端口与双工器A0天线口连接即距离为0米，耦合器A的另一个主通路端口与天馈组件A2连接，耦合器A的耦合端口连接抵消器电路B；所述耦合器A的***损耗小于0.2dB，耦合器A的耦合度范围为30dB左右，耦合器A的耦合端口相对于发射信号为正向耦合端口。耦合器A的承载功率需大于该装置的最大发射功率峰值，耦合器A的带宽包含发射频段，接收频段以及两者间的双工间隔，耦合器A的频带内增益波动与发射频段、接收频段相关且需在一定的门限值范围内；耦合器A的无源互调指标等同天馈组件A2的无源互调指标要求；所述抵消器电路B的承载功率门限值需大于等于耦合器A的功率门限值与耦合器A的耦合度之差值；为使抵消器电路B中互调信号发生器B2能产生无源互调抵消信号，加载在所述抵消器电路B的发射信号功率的最小值需大于一定的功率门限值。In this embodiment, the canceler circuit B is connected to the antenna link behind the antenna port of the duplexer A0 through the coupler A; a main path port of the coupler A is connected to the antenna port of the duplexer A0, that is, the distance is 0 meters, the other main channel port of coupler A is connected to antenna feed component A2, the coupling port of coupler A is connected to canceler circuit B; the insertion loss of coupler A is less than 0.2dB, the coupling degree range of coupler A It is about 30dB, and the coupling port of coupler A is a forward coupling port relative to the transmitted signal. The load power of coupler A must be greater than the maximum transmit power peak of the device. The bandwidth of coupler A includes the transmit frequency band, the receive frequency band and the duplex interval between the two. The gain fluctuations in the frequency band of coupler A and the transmit frequency band and receive frequency band Relevant and need to be within a certain threshold; the passive intermodulation index of coupler A is equivalent to the passive intermodulation index requirement of antenna feeder A2; the load-carrying power threshold of the canceler circuit B needs to be greater than or equal to the coupling The difference between the power threshold value of the device A and the coupling degree of the coupler A; in order for the intermodulation signal generator B2 in the canceler circuit B to generate a passive intermodulation cancellation signal, the emission loaded on the canceler circuit B The minimum value of signal power must be greater than a certain power threshold.

本实施例中，耦合器A承载的平均功率大于100瓦特且承载的峰值功率大于1000瓦特；耦合器A的无源互调指标为-117dBm/Hz；所述抵消器电路B承载的平均功率门限值大于等于20dBm且承载的峰值功率门限值大于等于30dBm；为使抵消器电路B中互调信号发生器B2能产生无源互调抵消信号，加载在所述抵消器电路B的发射信号功率的最小值需大于10瓦特。In this embodiment, the average power carried by coupler A is greater than 100 watts and the peak power carried is greater than 1000 watts; the passive intermodulation index of coupler A is -117 dBm/Hz; the average power gate carried by the canceler circuit B The limit value is greater than or equal to 20dBm and the peak power threshold value is greater than or equal to 30dBm; in order to enable the intermodulation signal generator B2 in the canceler circuit B to generate a passive intermodulation cancellation signal, the transmit signal loaded on the canceler circuit B The minimum power must be greater than 10 watts.

所述无源互调检测电路D的射频端口与双工器A0接收端口连接，以便获取接收信号和无源互调信号落入接收频段的分量，所述无源互调检测电路D的接收动态范围大于接收信号的最大功率值和无源互调预设值对应的功率值之间的差值，本实施例中所述无源互调检测电路D的接收动态范围大于70dB；无源互调检测电路D通过高速模数转换器与所述数字处理单元E连接，高速模数转换器的采样速率大于等于2倍的双工器A0接收频段带宽；The radio frequency port of the passive intermodulation detection circuit D is connected to the receiving port of the duplexer A0, so as to obtain the components of the received signal and the passive intermodulation signal falling into the receiving frequency band, and the reception dynamics of the passive intermodulation detection circuit D The range is greater than the difference between the maximum power value of the received signal and the power value corresponding to the preset value of passive intermodulation. In this embodiment, the receiving dynamic range of the passive intermodulation detection circuit D is greater than 70dB; passive intermodulation The detection circuit D is connected to the digital processing unit E through a high-speed analog-to-digital converter, and the sampling rate of the high-speed analog-to-digital converter is greater than or equal to 2 times that of the duplexer A0 receiving band bandwidth;

所述数字处理单元E通过多路数模转换器与抵消器电路B连接，将幅度、相位的控制量传递给抵消器电路B，所述抵消器电路B的幅度调整精度和相位调整精度的要求主要来源于无源互调信号抵消能力需求。本实施例中所述抵消器电路B的幅度调整精度小于0.1dB和相位调整精度小于1度。The digital processing unit E is connected to the canceler circuit B through a multi-channel digital-to-analog converter, and transfers the controlled amounts of amplitude and phase to the canceler circuit B. The amplitude adjustment accuracy and phase adjustment accuracy requirements of the canceler circuit B Mainly comes from the need for passive intermodulation signal cancellation capabilities. The amplitude adjustment accuracy of the canceler circuit B in this embodiment is less than 0.1 dB and the phase adjustment accuracy is less than 1 degree.

所述数字处理单元E与无源互调检测电路D之间至少存在两个接口：一个接口作用是获取无源互调检测电路D中高速模数转换器的采样信号，从而进行无源互调信号的数字滤波和幅度计算；另一个接口的作用是通过总线配置无源互调检测电路D的参数，例如本振频率，放大器增益等，所述总线包括但不限于I2C总线、SPI总线；There are at least two interfaces between the digital processing unit E and the passive intermodulation detection circuit D: one interface is used to obtain the sampling signal of the high-speed analog-to-digital converter in the passive intermodulation detection circuit D, thereby performing passive intermodulation Digital filtering and amplitude calculation of the signal; the function of another interface is to configure the parameters of the passive intermodulation detection circuit D through the bus, such as local oscillator frequency, amplifier gain, etc. The bus includes but is not limited to I2C bus and SPI bus;

当所述数字处理单元E获取所述发射信号频率信息和接收信号频率信息的方法是利用发射信号鉴频电路E1时，则发射信号鉴频电路E1的射频端口与所述发射电路单元F中发射链路上的某处连接，发射信号鉴频电路E1通过高速模数转换器与所述数字处理单元E连接；同时数字处理单元E与发射信号鉴频电路E1之间还有一个接口，作用是通过总线配置发射信号鉴频电路E1的参数，例如本振频率、链路增益等，所述总线包括但不限于I2C总线、SPI总线；When the digital processing unit E obtains the transmitted signal frequency information and the received signal frequency information by using the transmitted signal frequency discriminating circuit E1, the radio frequency port of the transmitting signal frequency discriminating circuit E1 and the transmitting circuit unit F transmit Connected somewhere on the link, the transmission signal frequency discrimination circuit E1 is connected to the digital processing unit E through a high-speed analog-to-digital converter; at the same time, there is an interface between the digital processing unit E and the transmission signal frequency discrimination circuit E1. Configure the parameters of the transmitted signal frequency discrimination circuit E1 through the bus, such as local oscillator frequency, link gain, etc. The bus includes but is not limited to I2C bus and SPI bus;

所述数字处理单元E具备至少一个信息交互接口，其作用包含但不限于程序下载，配置信息输入，远程告警和维护；其中需要输入的配置信息包括本装置发射信号带宽和频段、接收信号带宽和频段、无源互调信号中的主要干扰分量的阶次和频段信息、无源互调信号预设值以及随时间变化的曲线、最大抵消次数；所述数字处理单元E可以通过信息交互接口获取发射信号频率信息和接收信号频率信息；所述的信息交互接口还可以与互联网后台资源进行数据交互：上传所述设备运行过程中的无源互调值，无源互调值随时间变化的经验曲线，以及无源互调信号自适应抵消装置中各模块电路的状态信息；或者下载综合优化后的无源互调信号预设值以及随时间变化的曲线。所述数字处理单元E的信息交互接口的硬件构成包括但不限于以太网接口、光纤接口、RS-485总线接口。The digital processing unit E is equipped with at least one information interaction interface, and its functions include but are not limited to program download, configuration information input, remote alarm and maintenance; the configuration information to be input includes the transmission signal bandwidth and frequency band of the device and the reception signal bandwidth and Frequency band, the order and frequency band information of the main interference components in the passive intermodulation signal, the preset value of the passive intermodulation signal and the time-varying curve, the maximum number of cancellations; the digital processing unit E can be obtained through the information interaction interface Frequency information of the transmitted signal and frequency information of the received signal; the information interaction interface can also perform data interaction with Internet background resources: upload the passive intermodulation value during the operation of the device, and the experience of the passive intermodulation value changing with time Curve, and the status information of each module circuit in the passive intermodulation signal adaptive cancellation device; or download the integrated optimized passive intermodulation signal preset value and the curve that changes with time. The hardware configuration of the information interaction interface of the digital processing unit E includes but is not limited to an Ethernet interface, an optical fiber interface, and an RS-485 bus interface.

本实施例中，所述抵消器电路B的第一种方案，如图2所示：所述抵消器电路B中的调幅调相器B1一端直接连接耦合器A的耦合端口，或者通过射频开关B3连接耦合器A的耦合端口，另一端连接互调信号发生器B2；所述调幅调相器B1包括调幅电路和调相电路；作用一是使互调信号发生器B2承受一个合适功率的射频信号，作用二是将互调信号发生器B2产生的互调信号，进行调幅、调相处理，以便与本装置中双工器A0及其天线链路产生的无源互调信号进行抵消。其中所述调幅电路1由可调控衰减器和固定衰减器构成；调相电路2至少包含2个可调控移相器；所述调幅调相器B1的幅度调整范围大于 30dB，相位调整范围大于180度；所述抵消器电路B中调幅调相器B1的承载功率大于等于所述抵消器电路B的承载功率门限值，即所述抵消器电路B中调幅调相器B1承载的平均功率门限值大于等于20dBm且承载的峰值功率门限值大于等于30dBm。所述调幅调相器B1的工作频段包含所述双工器A0的发射频段和接收频段，调幅调相器B1的频带内增益波动与发射频段、接收频段相关且需在一定的门限值范围内。In this embodiment, the first solution of the canceler circuit B is shown in FIG. 2: One end of the amplitude modulation phase modulator B1 in the canceler circuit B is directly connected to the coupling port of the coupler A, or through a radio frequency switch B3 is connected to the coupling port of coupler A, and the other end is connected to an intermodulation signal generator B2; the amplitude modulation phase modulator B1 includes an amplitude modulation circuit and a phase modulation circuit; the first role is to make the intermodulation signal generator B2 withstand a suitable power radio frequency The second role of the signal is to perform amplitude modulation and phase modulation on the intermodulation signal generated by the intermodulation signal generator B2, so as to cancel the passive intermodulation signal generated by the duplexer A0 and its antenna link in this device. The amplitude modulation circuit 1 is composed of an adjustable attenuator and a fixed attenuator; the phase modulation circuit 2 includes at least two adjustable phase shifters; the amplitude adjustment range of the amplitude modulation phase modulator B1 is greater than 30dB, and the phase adjustment range is greater than 180 The load power of the amplitude modulator P1 in the canceler circuit B is greater than or equal to the load power threshold of the canceler circuit B, that is, the average power gate carried by the amplitude modulator P1 in the canceler circuit B The limit is greater than or equal to 20 dBm and the peak power threshold of the load is greater than or equal to 30 dBm. The working frequency band of the AM phase modulator B1 includes the transmitting frequency band and the receiving frequency band of the duplexer A0. The gain fluctuation within the frequency band of the AM phase modulator B1 is related to the transmitting frequency band and the receiving frequency band and needs to be within a certain threshold range Inside.

进一步地，输入至所述抵消器电路B的射频信号中的发射信号经射频开关B3或直接输入到调幅调相器B1，再经调幅调相器B1中调幅电路1的功率调整后输入到互调信号发生器B2，使互调信号发生器B2产生出与所述射频信号中的无源互调信号频率相同、幅度不同和相位不同的互调信号，且该互调信号中落入接收频段的单个3阶分量、或单个5阶分量、或单个更高阶次分量，或者多个不同频点的3阶分量、或多个不同频点的5阶分量、或多个不同频点的更高阶次分量，或者同时有3阶分量、5阶分量甚至更高阶次分量之间的幅度关系和相位关系与所述双工器A0及其天线链路产生的无源互调信号中落入接收频段的单个3阶分量、或单个5阶分量、或单个更高阶次分量，或者多个不同频点的3阶分量、或多个不同频点的5阶分量、或多个不同频点的更高阶次分量，或者同时有3阶分量、5阶分量甚至更高阶次分量之间的幅值关系和相位关系基本一致；而该射频信号中的接收信号和无源互调信号的功率在所述互调信号发生器B2上产生的互调信号的幅值远小于上述无源互调信号的幅值，不对无源互调抵消结果产生影响；所述互调信号反射后再次通过调幅调相器B1，并经调幅调相器B1的幅度调整和相位调整，并经射频开关B3或者直接输入到耦合器A，最后耦合输出至耦合器A的主通路，形成与所述耦合器A主通路的无源互调信号中落入接收频段的且与接收信号有一定频率间隔的分量频率相同、幅度相同和相位相反的互调抵消信号，该互调抵消信号与所述无源互调信号中的分量进行抵消，抵消后的无源互调信号小于等于无源互调预设值；同时双工器A0及其天线链路中的发射信号和接收信号在双工器A0及其天线链路中正常运作；Further, the transmission signal input into the radio frequency signal of the canceler circuit B is input to the amplitude modulation phase modulator B1 through the radio frequency switch B3 or directly, and then is input to the mutual after being adjusted by the power of the amplitude modulation circuit 1 in the amplitude modulation phase modulator B1 Modulation signal generator B2, so that the intermodulation signal generator B2 generates an intermodulation signal with the same frequency, different amplitude and different phase as the passive intermodulation signal in the radio frequency signal, and the intermodulation signal falls into the receiving frequency band Single third-order component, or single fifth-order component, or single higher-order component, or multiple third-order components at different frequencies, or multiple fifth-order components at different frequencies, or multiple different frequencies High-order components, or the amplitude relationship and phase relationship between the third-order component, the fifth-order component, and even higher-order components, and the passive intermodulation signal generated by the duplexer A0 and its antenna link A single 3rd order component, or a single 5th order component, or a single higher order component into the receiving frequency band, or 3rd order components at multiple different frequency points, or 5th order components at multiple different frequency points, or multiple different frequencies The higher-order component of the point, or the amplitude relationship and phase relationship between the third-order component, the fifth-order component, and even higher-order components are basically the same; and the received signal and the passive intermodulation signal in the RF signal The amplitude of the intermodulation signal generated by the power of the intermodulation signal generator B2 is much smaller than the amplitude of the above-mentioned passive intermodulation signal, and does not affect the passive intermodulation cancellation result; the intermodulation signal is reflected again Through the AM phase modulator B1, and the amplitude and phase adjustment of the AM phase modulator B1, and directly input to the coupler A through the RF switch B3, and finally coupled out to the main path of the coupler A, forming the coupling with the Among the passive intermodulation signals of the main channel of device A, intermodulation cancellation signals that fall into the receiving frequency band and have a certain frequency interval from the received signal have the same frequency, the same amplitude, and the opposite phase. The intermodulation cancellation signal and the passive The components in the intermodulation signal are cancelled. The canceled passive intermodulation signal is less than or equal to the preset value of passive intermodulation; at the same time, the transmitted and received signals in duplexer A0 and its antenna link are in duplexer A0 and Normal operation in its antenna link;

本实施例中，所述抵消器电路B第二种方案，如图3所示：所述抵消器电路B中的调幅电路3一端通过第一环行器4与耦合器A的耦合端口连接，或者可以通过第一环行器4、射频开关B3与耦合器A的耦合端口连接；另一端通过第二环行器5与互调信号发生器B2连接；所述抵消器电路B中的调幅调相器B1一端通过第二环行器5与互调信号发生器B2连接；另一端通过第一环行器4与耦合器A的耦合端口连接，或者可以通过第一环行器4、射频开关B3与耦合器A的耦合端口连接；所述调幅电路3，作用是使互调信号发生器B2承受一个合适功率的射频信号；所述调幅调相器B1包含调幅电路1和调相电路2，作用是将互调信号发生器B2产生的互调信号，进行调幅、调相处理，以便与本装置中双工器A0及其天线链路产生的无源互调信号进行抵消；所述调幅电路1至少包含1个可调控衰减器；所述调相电路2至少包含2个可调控移相器；所述调幅电路3由固定衰减器或可调控衰减器构成；所述第一环行器4和第二环行器5的频率带宽包括所述双工器A0的发射频段和接收频段；所述调幅调相器B1的幅度调整范围大于30dB，相位调整范围大于180度，所述调幅调相器B1的工作频段包含所述双工器A0的接收频段，调幅调相器B1的频带内增益波动与接收频段相关且需在一定的门限值范围内；所述抵消器电路B中调幅电路3的承载功率大于等于所述抵消器电路B的承载功率门限值，即所述抵消器电路B中调幅电路3承载的平均功率门限值大于等于20dBm且承载的峰值功率门限值大于等于30dBm；In this embodiment, the second solution of the canceler circuit B is shown in FIG. 3: one end of the amplitude modulation circuit 3 in the canceler circuit B is connected to the coupling port of the coupler A through the first circulator 4 or It can be connected to the coupling port of the coupler A through the first circulator 4 and the RF switch B3; the other end is connected to the intermodulation signal generator B2 through the second circulator 5; the amplitude modulation phase modulator B1 in the canceler circuit B One end is connected to the intermodulation signal generator B2 through the second circulator 5; the other end is connected to the coupling port of the coupler A through the first circulator 4 or may be connected to the coupler A through the first circulator 4 and the RF switch B3 Coupling port connection; the amplitude modulation circuit 3, the role is to make the intermodulation signal generator B2 withstand a suitable power RF signal; the amplitude modulation phase modulator B1 contains the amplitude modulation circuit 1 and the phase modulation circuit 2, the role is to intermodulation signal The intermodulation signal generated by the generator B2 is amplitude-modulated and phase-modulated to cancel the passive intermodulation signal generated by the duplexer A0 and its antenna link in the device; the amplitude modulation circuit 1 includes at least one Adjustable attenuator; the phase modulation circuit 2 includes at least two adjustable phase shifters; the amplitude modulation circuit 3 is composed of a fixed attenuator or adjustable attenuator; the first circulator 4 and the second circulator 5 The frequency bandwidth includes the transmission frequency band and the reception frequency band of the duplexer A0; the amplitude adjustment range of the amplitude modulation phase modulator B1 is greater than 30dB, and the phase adjustment range is greater than 180 degrees. The working frequency band of the amplitude modulation phase modulator B1 includes the In the receiving frequency band of the duplexer A0, the gain fluctuation in the frequency band of the AM phase modulator B1 is related to the receiving frequency band and needs to be within a certain threshold; the load carrying power of the AM circuit 3 in the canceler circuit B is greater than or equal to the The carrying power threshold value of the canceller circuit B, that is, the average power threshold value carried by the amplitude modulation circuit 3 in the canceler circuit B is greater than or equal to 20 dBm and the peak power threshold value carried is greater than or equal to 30 dBm;

进一步地，输入至所述抵消器电路B射频信号中的发射信号经第一环行器4输入到调幅电路3或者经射频开关B3和第一环行器4输入到调幅电路3，再经调幅电路3的功率调整后通过第二环行器5输入到互调信号发生器B2，使互调信号发生器B2产生出与所述射频信号中的无源互调信号频率相同、幅度不同和相位不同的互调信号，且该互调信号中落入接收频段的单个3阶分量、或单个5阶分量、或单个更高阶次分量，或者多个不同频点的3阶分量、或多个不同频点的5阶分量、或多个不同频点的更高阶次分量，或者同时有3阶分量、5阶分量甚至更高阶次分量之间的幅度关系和相位关系与所述双工器A0及其天线链路产生的无源互调信号中落入接收频段的单个3阶分量、或单个5阶分量、或单个更高阶次分量，或者多个不同频点的3阶分量、或多个不同频点的5阶分量、或多个不同频点的更高阶次分量，或者同时有3阶分量、5阶分量甚至更高阶次分量之间的幅值关系和相位关系基本一致；而该射频信号中的接收信号和无源互调信号的功率在所述互调信号发生器B2上产生的互调信号的幅值远小于上述无源互调信号的幅值，不对无源互调抵消结果产生影响；所述互调信号反射后通过第二环行器5输入到调幅调相器B1，并经调幅调相器B1的幅度调整和相位调整，通过第一环行器4或通过第一环行器4和射频开关B3最后耦合输出至耦合器A的主通路，形成与所述耦合器A主通路的无源互调信号中落入接收频段的且与接收信号有一定频率间隔的分量频率相同、幅度相同和相位相反的互调抵消信号，该互调抵消信号与所述无源互调信号中的分量进行抵消，抵消后的无源互调信号小于等于无源互调预设值；同时双工器A0及其天线链路中的发射信号和接收信号在双工器A0及其天线链路中正常运作；Further, the transmission signal input into the radio frequency signal of the canceller circuit B is input to the amplitude modulation circuit 3 through the first circulator 4 or input to the amplitude modulation circuit 3 through the radio frequency switch B3 and the first circulator 4, and then passes through the amplitude modulation circuit 3 After the power is adjusted, it is input to the intermodulation signal generator B2 through the second circulator 5, so that the intermodulation signal generator B2 generates a mutual frequency with the same frequency, different amplitude and different phase as the passive intermodulation signal in the radio frequency signal. Modulation signal, and a single third-order component, or a single fifth-order component, or a single higher-order component in the intermodulation signal that falls into the receiving frequency band, or a third-order component at multiple different frequency points, or multiple different frequency points 5th order component, or higher order components of multiple different frequency points, or both the amplitude relationship and the phase relationship between the 3rd order component, 5th order component and even higher order component and the duplexer A0 and The passive intermodulation signal generated by the antenna link falls into a single third-order component, or a single fifth-order component, or a single higher-order component, or multiple third-order components at different frequencies, or multiple The amplitude relationship and phase relationship between the 5th order component at different frequency points, or multiple higher order components at different frequency points, or the 3rd order component, 5th order component and even higher order components at the same time; and The amplitude of the intermodulation signal generated by the power of the received signal and the passive intermodulation signal in the radio frequency signal on the intermodulation signal generator B2 is much smaller than the amplitude of the above-mentioned passive intermodulation signal. The cancellation result has an impact; after being reflected, the intermodulation signal is input to the AM phase modulator B1 through the second circulator 5, and after the amplitude adjustment and phase adjustment of the AM phase modulator B1, through the first circulator 4 or through the first The circulator 4 and the RF switch B3 are finally coupled out to the main path of the coupler A, forming a component frequency that falls into the receiving frequency band and has a certain frequency interval from the received signal in the passive intermodulation signal with the main path of the coupler A The same, the same amplitude and the opposite phase intermodulation cancellation signal, the intermodulation cancellation signal cancels with the components in the passive intermodulation signal, the passive intermodulation signal after cancellation is less than or equal to the passive intermodulation preset value; At the same time, the transmitted and received signals in the duplexer A0 and its antenna link operate normally in the duplexer A0 and its antenna link;

本实施例中，所述抵消器电路B两种方案中的互调信号发生器B2包含但不限于单个二极管、单个三极管或多个二极管的并联构成；二极管具体型号或者三极管具体型号与产生互调信号3阶、5阶或更高阶互调信号的幅值特性和相位特性相关；采用多个同型号二极管并联结构时，将增强互调信号强度；互调信号发生器B2的承载功率大于等于所述抵消器电路B承载功率门限值与从抵消器电路B射频输入口到互调信号发生器B2的链路损耗的差值。互调信号发生器B2的承载功率大于等于20dBm。In this embodiment, the intermodulation signal generator B2 in the two solutions of the canceler circuit B includes but is not limited to a single diode, a single triode, or a parallel configuration of multiple diodes; the specific model of the diode or the specific model of the triode and the intermodulation are generated The amplitude characteristic of the 3rd, 5th or higher order intermodulation signal of the signal is related to the phase characteristic; when multiple diodes of the same type are connected in parallel, the strength of the intermodulation signal will be enhanced; the power of the intermodulation signal generator B2 is greater than or equal to The canceller circuit B carries the difference between the power threshold value and the link loss from the radio frequency input port of the canceller circuit B to the intermodulation signal generator B2. The bearing power of the intermodulation signal generator B2 is greater than or equal to 20 dBm.

所述无源互调检测电路D至少包括低噪声放大器、下变频模块、高速模数转换器；所述低噪声放大器的噪声系数小于1dB；下变频模块可以将接收的射频信号转换成中频信号，或者将接收的射频信号转换成零中频信号；高速模数转换器的采样动态范围需大于接收信号的最大功率值和无源互调预设值对应的功率值之间的差值，采样速率大于等于2倍的双工器A0接收频段带宽。所述无源互调检测电路D能够采样的最小功率小于等于预设值对应的无源互调功率值。即本实施例中高速模数转换器的采样动态范围需大于70dB，模数转换器的位数为14位，采样速率大于等于2倍的双工器A0接收频段带宽；所述无源互调检测电路D能够采样的最小功率小于等于预设值对应的无源互调功率值，本实施例中为-115dBm。同时该电路可以根据所接收的射频信号总功率的幅值调整链路增益从而避免接收信号或其他信号造成的链路阻塞；所述无源互调检测电路D的增益由需求的无源互调预设值、无源互调检测电路D中高速模数转换器的最小采样功率、链路噪声系数等确定；所述无源互调检测电路D的接收信号功率的最大值大于等于该装置实际对应的通信标准所规定的最大接收信号功率，本实施例中为-50dBm。The passive intermodulation detection circuit D includes at least a low-noise amplifier, a down-conversion module, and a high-speed analog-to-digital converter; the noise factor of the low-noise amplifier is less than 1 dB; the down-conversion module can convert the received radio frequency signal into an intermediate frequency signal, Or convert the received RF signal to a zero-IF signal; the sampling dynamic range of the high-speed analog-to-digital converter must be greater than the difference between the maximum power value of the received signal and the power value corresponding to the preset value of passive intermodulation, and the sampling rate is greater than It is equal to twice the bandwidth of the duplexer A0 receiving band. The minimum power that the passive intermodulation detection circuit D can sample is less than or equal to the passive intermodulation power value corresponding to the preset value. That is, the sampling dynamic range of the high-speed analog-to-digital converter in this embodiment needs to be greater than 70dB, the number of digits of the analog-to-digital converter is 14 bits, and the sampling rate is greater than or equal to 2 times the bandwidth of the duplexer A0 receiving band; the passive intermodulation The minimum power that the detection circuit D can sample is less than or equal to the passive intermodulation power value corresponding to the preset value, which is -115 dBm in this embodiment. At the same time, the circuit can adjust the link gain according to the amplitude of the total power of the received RF signal to avoid link blocking caused by the received signal or other signals; the gain of the passive intermodulation detection circuit D is determined by the required passive intermodulation The preset value, the minimum sampling power of the high-speed analog-to-digital converter in the passive intermodulation detection circuit D, the link noise figure, etc. are determined; the maximum value of the received signal power of the passive intermodulation detection circuit D is greater than or equal to the actual value of the device The maximum received signal power specified by the corresponding communication standard is -50 dBm in this embodiment.

所述无源互调检测电路D的可以采用如图4所示的接收超外差结构将射频信号转换为中频信号再进行模数转换，此时无源互调检测电路D由低噪声放大器D1、射频滤波及小信号放大单元D2、混频器D3、本振D4、中频滤波器D5、中频放大器D6、模数转换器D7构成，其中射频滤波及小信号放大单元D2中的滤波组件的通带频段为双工器A0的接收频段；所述无源互调检测电路D或者可以采用如图5所示的接收零中频结构将射频信号转换为零中频信号再进行模数转换，此时无源互调检测电路D由低噪声放大器D1、射频滤波及小信号放大单元D2、下变频及模数转换单元D8构成，其中射频滤波及小信号放大单元D2中的滤波组件的通带频段为双工器A0的接收频段，下变频及模数转换单元D8作用是将射频信号直接转换为零中频信号并进行模数转换。The passive intermodulation detection circuit D may adopt a receiving superheterodyne structure as shown in FIG. 4 to convert the radio frequency signal into an intermediate frequency signal and then perform analog-to-digital conversion. At this time, the passive intermodulation detection circuit D is composed of a low noise amplifier D1 , RF filtering and small signal amplification unit D2, mixer D3, local oscillator D4, intermediate frequency filter D5, intermediate frequency amplifier D6, analog-to-digital converter D7, in which the filtering components in the RF filtering and small signal amplification unit D2 The band frequency band is the receiving frequency band of the duplexer A0; the passive intermodulation detection circuit D may adopt a receiving zero-IF structure as shown in FIG. 5 to convert the radio frequency signal to a zero-IF signal and then perform analog-to-digital conversion. The source intermodulation detection circuit D is composed of a low-noise amplifier D1, a radio frequency filtering and small-signal amplification unit D2, a down-conversion and analog-to-digital conversion unit D8, wherein the passband frequency band of the filtering component in the radio frequency filtering and small-signal amplification unit D2 is double The receiving frequency band of the tool A0, the function of the down-conversion and analog-to-digital conversion unit D8 is to directly convert the radio frequency signal to a zero-IF signal and perform analog-to-digital conversion.

所述数字处理单元E通过多路数模转换器与抵消器电路B连接，将幅度、相位的控制量传递给抵消器电路B，所述抵消器电路B的幅度调整精度和相位调整精度的要求主要来源于无源互调信号抵消能力需求；所述数字处理单元E中的数模转换器的位数范围在10～18位之间，且至少有3个数模转换器。本实施例中，所述数字处理单元E至少包含具备数字信号处理功能的逻辑处理与运算处理器件，用于数字信号的接收、算法处理、数字信号的输出、控制和配置信号的输出等，所述逻辑处理与运算处理器件包含但不限于现场可编程门阵列器件，中央处理器，数字信号处理器；所述数字处理单元E的信息交互接口的硬件构成包括但不限于以太网接口、RS-485总线接口；所述数字处理单元E中的数模转换器的位数为12位之间，且至少有3个数模转换器；所述数字处理单元E中运行对应“一种自适应抵消无线收发***中无源互调信号的方法”的程序，该方法的流程图参见图6。The digital processing unit E is connected to the canceler circuit B through a multi-channel digital-to-analog converter, and transfers the controlled amounts of amplitude and phase to the canceler circuit B. The amplitude adjustment accuracy and phase adjustment accuracy requirements of the canceler circuit B Mainly from passive intermodulation signal cancellation capability requirements; the number of digits of the digital-to-analog converter in the digital processing unit E is between 10 and 18 bits, and there are at least three digital-to-analog converters. In this embodiment, the digital processing unit E includes at least a logic processing and arithmetic processing device with digital signal processing function, which is used for digital signal reception, algorithm processing, digital signal output, control and configuration signal output, etc. The logic processing and arithmetic processing devices include but are not limited to field programmable gate array devices, central processors, and digital signal processors; the hardware configuration of the information interaction interface of the digital processing unit E includes but is not limited to Ethernet interface, RS- 485 bus interface; the number of digits of the digital-to-analog converter in the digital processing unit E is between 12 bits, and there are at least 3 digital-to-analog converters; the operation in the digital processing unit E corresponds to "an adaptive offset The procedure of "passive intermodulation signal in wireless transceiver system", the flow chart of this method is shown in FIG. 6.

本实施例中，如表1所示：所述发射电路单元F中有两个43dBm的单音信号构成了一个46dBm的双音信号，该双音信号使双工器A0及其天线链路产生了无源互调信号，并且实际在双工器A0接收端口测试到的无源互调中3阶分量幅值为-94.7dBm，且5阶分量为-124.8dBm，7阶分量在频谱仪热噪声之下；所述双工器A0及其天线链路的无源互调信号中落入接收频段的分量小于等于-112dBm的预设值，所以主要优化3阶无源互调不良，同时3阶信号和5阶信号幅值相差30.1dB；此时选用的特定二极管所产生的互调信号在双工器A0接收端口的测试值是：3阶分量幅值为-75.6dBm，且5阶分量为-106.3dBm，7阶分量在频谱仪热噪声之下，此时3阶信号和5阶信号幅值相差30.7dB；当无源互调抵消功能开启后，此时在双工器A0接收端口测试到的无源互调中3阶分量如图7所示，幅值为-119.6dBm，且5阶分量如图8所示，为-130.8dBm，7阶分量在频谱仪热噪声之下；可以看出造成装置无源互调不良的3阶分量优化了24.9dB，且5阶分量也同步被优化。此时，所述无源互调信号落入到接收频段的各阶次分量与接收信号之间的频率间隔大于等于200KHz。In this embodiment, as shown in Table 1: There are two 43 dBm single-tone signals in the transmitting circuit unit F to form a 46 dBm double-tone signal, which causes the duplexer A0 and its antenna link to generate The passive intermodulation signal is detected, and the amplitude of the third-order component in the passive intermodulation actually tested at the receiving port of the duplexer A0 is -94.7dBm, and the fifth-order component is -124.8dBm. The seventh-order component is hot in the spectrum analyzer. Under noise; the component of the passive intermodulation signal of the duplexer A0 and its antenna link that falls into the receiving frequency band is less than or equal to the preset value of -112dBm, so it is mainly optimized for poor third-order passive intermodulation, while 3 The amplitude difference between the first-order signal and the fifth-order signal is 30.1dB; the test value of the intermodulation signal generated by the specific diode selected at the receiving port of the duplexer A0 at this time is: the amplitude of the third-order component is -75.6dBm, and the fifth-order component -106.3dBm, the 7th-order component is under the thermal noise of the spectrum analyzer, the amplitude difference between the 3rd-order signal and the 5th-order signal is 30.7dB; when the passive intermodulation cancellation function is turned on, at the receiving port of the duplexer A0 The measured third-order component of passive intermodulation is shown in Figure 7, with an amplitude of -119.6dBm, and the fifth-order component is shown in Figure 8, which is -130.8dBm, and the seventh-order component is under the thermal noise of the spectrum analyzer; It can be seen that the third-order component that causes the poor passive intermodulation of the device is optimized by 24.9 dB, and the fifth-order component is also optimized synchronously. At this time, the frequency interval between each order component of the passive intermodulation signal falling into the receiving frequency band and the receiving signal is greater than or equal to 200 KHz.

本实施例装置实际应用于无线收发设备的一个实例如图9所示：此时本装置的双工器A0即是无线收发设备的双工器A0；本装置的无源互调检测电路D复用无线收发设备的接收链路的组件或单元，并依据无线收发设备的接收频段进行相应调整；本装置的发射电路单元F复用无线收发设备的发射链路的组件或单元，并依据无线收发设备的发射频段进行相应调整；本装置的数字处理单元E复用无线收发设备的数字处理单元的组件或单元；本装置的耦合器A的主通路端口和无线收发设备的双工器A0的天线口直接连接；本装置的抵消器电路B的射频端口和耦合器A的耦合端口直接连接，抵消器电路B的幅度、相位调整由数字处理单元E运算输出的幅度、相位控制参数实现；所述无线收发设备是一个发射频段为1805MHz～1880MHz、接收频段为1710MHz～1785MHz、FDD LTE制式的射频拉远设备；设置发射信号1为1820MHz/43dBm、发射信号2为1860MHz/43dBm，该双音信号使双工器A0及其天线链路产生了无源互调信号，如图10所示：在双工器A0接收端口测试到的无源互调中3阶分量幅值为-107.6dBm/1780MHz，且5阶分量和7阶分量在频谱仪热噪声之下；所述双工器A0及其天线链路的无源互调信号中落入接收频段的分量小于等于-110dBm的无源互调预设值，主要优化3阶无源互调分量；当无源互调抵消功能开启后，此时在双工器A0接收端口测试到的无源互调中3阶分量如图10所示，幅值为-128.1dBm；设备无源互调不良的3阶分量优化了20.5dB；再使射频拉远设备工作于FDD LTE双载波下，此时发射信号1为1820MHz/44dBmPeak/信号峰均比为7dB/IBW＝20MHz、发射信号2为1860MHz/44dBmPeak/信号峰均比为7dB/IBW＝20MHz，在设备加载该双载波信号后，未开启本装置的无源互调抵消功能时发射信号1对应的ACPR邻信道功率比如图11所示为49.7dBc/60.4dBc，发射信号2对应的ACPR如图12所示为47.9dBc/60.4dBc，此时检测接收链路的RSSI上报值接收信号的强度指示为-60.59dBfs；开启本装置的无源互调抵消功能后，发射信号1对应的ACPR如图13所示为50.2dBc/60.5dBc，发射信号2对应的ACPR如图14所示为48.5dBc/60.3dBc，此时检测接收链路的RSSI上报值为-60.69dBfs；另外，对应发射信号1的接收信号1的频点为1725Mhz，IBW为20MHz，对应发射信号2的接收信号2的频点为1765Mhz，IBW为20MHz，将接收信号环回到发射链路并测试EVM，未开启本装置的无源互调抵消功能时接收信号1的EVM如图15所示为3.1％左右，接收信号2的EVM如图16所示为3.06％左右；开启本装置的无源互调抵消功能后，接收信号1的EVM如图17所示为3.1％左右，接收信号2的EVM如图18所示为3.06％左右；对于本装置无源互调抵消功能开启前和开启后，由相同频点信号的ACPR值的对比以及接收链路相关指标对比可知，所述装置的无源互调抵消功能基本没有对发射信号线性性能和接收性能产生不良影响。An example of the practical application of the device of this embodiment to a wireless transceiver device is shown in FIG. 9: At this time, the duplexer A0 of the device is the duplexer A0 of the wireless transceiver device; the passive intermodulation detection circuit D of the device is complex Use the components or units of the receiving link of the wireless transceiver device, and adjust accordingly according to the receiving frequency band of the wireless receiving and transmitting device; the transmitting circuit unit F of the device multiplexes the components or units of the transmitting link of the wireless receiving and sending device, and according to the wireless transceiver The transmission frequency band of the device is adjusted accordingly; the digital processing unit E of the device multiplexes the components or units of the digital processing unit of the wireless transceiver device; the main channel port of the coupler A of the device and the antenna of the duplexer A0 of the wireless transceiver device The port is directly connected; the radio frequency port of the canceler circuit B of the device is directly connected to the coupling port of the coupler A, and the amplitude and phase adjustment of the canceler circuit B is realized by the amplitude and phase control parameters calculated and output by the digital processing unit E; The wireless transceiver device is a radio frequency remote device with a transmission frequency band of 1805MHz to 1880MHz, a reception frequency band of 1710MHz to 1785MHz, and FDD LTE; set the transmission signal 1 to 1820MHz/43dBm, the transmission signal 2 to 1860MHz/43dBm, the dual tone signal enables The duplexer A0 and its antenna link produce a passive intermodulation signal, as shown in Figure 10: The amplitude of the third-order component in the passive intermodulation tested at the duplexer A0 receiving port is -107.6dBm/1780MHz, And the 5th order component and 7th order component are under the thermal noise of the spectrum analyzer; the passive intermodulation signal of the passive intermodulation signal of the duplexer A0 and its antenna link falling into the receiving frequency band is less than or equal to -110dBm. Set the value, mainly optimize the third-order passive intermodulation component; when the passive intermodulation cancellation function is turned on, the third-order component in the passive intermodulation tested at the receiving port of the duplexer A0 at this time is shown in Figure 10. The value is -128.1dBm; the third-order component of the device with poor passive intermodulation is optimized by 20.5dB; and then the RF remote device is operated under FDD LTE dual carrier, at this time the transmitted signal 1 is 1820MHz/44dBmPeak/signal peak-to-average ratio is 7dB/IBW=20MHz, the transmitted signal 2 is 1860MHz/44dBmPeak/signal peak-to-average ratio is 7dB/IBW=20MHz, after the device is loaded with the dual carrier signal, the transmitted signal 1 corresponds to the passive intermodulation cancellation function of the device The ACPR adjacent channel power is 49.7dBc/60.4dBc as shown in Figure 11, and the ACPR corresponding to the transmitted signal 2 is 47.9dBc/60.4dBc as shown in Figure 12. At this time, the RSSI report value of the received link is detected to indicate the strength of the received signal. -60.59dBfs; after the passive intermodulation cancellation function of the device is turned on, the ACPR corresponding to the transmitted signal 1 is 50.2dBc/60.5dBc as shown in FIG. 13, and the ACPR corresponding to the transmitted signal 2 is 48.5dBc/ as shown in FIG. 14. 60.3dBc, detect and receive The RSSI report value of the link is -60.69dBfs; in addition, the frequency of the received signal 1 corresponding to the transmitted signal 1 is 1725Mhz, the IBW is 20MHz, the frequency of the received signal 2 corresponding to the transmitted signal 2 is 1765Mhz, and the IBW is 20MHz. The received signal loops back to the transmit link and tests the EVM. When the passive intermodulation cancellation function of the device is not turned on, the EVM of the received signal 1 is about 3.1% as shown in FIG. 15 and the EVM of the received signal 2 is shown as FIG. 16 About 3.06%; after the passive intermodulation cancellation function of the device is turned on, the EVM of the received signal 1 is about 3.1% as shown in FIG. 17 and the EVM of the received signal 2 is about 3.06% as shown in FIG. 18; Before and after the source intermodulation cancellation function is turned on, it can be known from the comparison of the ACPR value of the signal at the same frequency point and the comparison of the relevant indicators of the receiving link that the passive intermodulation cancellation function of the device basically has no linear performance and reception performance on the transmitted signal Have an adverse effect.

此外，本实施例所述装置应用在无线直放站的一个实例如图19所示：所述无线直放站包括耦合器A-1，耦合器A-2，抵消器电路B-1，抵消器电路B-2，接收电路单元D-1，接收电路单元D-2，数字处理单元E，双工器A0-1，双工器A0-2，发射电路单元F-1，发射电路单元F-2；以双工器A0-1和双工器A0-2为无源互调指标优化对象并围绕双工器构成了两套具有无源互调抵消功能的装置，以双工器A0-1为无源互调指标优化对象构成的具有无源互调抵消功能的装置简称为第一装置，以双工器A0-2为无源互调指标优化对象构成的具有无源互调抵消功能的装置简称为第二装置；对于第一装置：本装置的双工器A0为无线直放站的双工器A0-1；本装置的无源互调检测电路D复用无线直放站的接收链路的组件或单元，构成无源互调检测电路D-1；本装置的发射电路单元F复用无线直放站的发射电路单元F-1；本装置的数字处理单元E复用无线直放站的数字处理单元E，所述数字处理单元E中对应“一种自适应抵消无线收发***中无源互调信号的方法”的程序将集成于无线直放站的整机程序中；本装置的耦合器A需在所述无线直放站内新增并在第一装置中称为耦合器A-1，且其一个主通路端口和无线直放站的双工器A0-1天线口直接连接，耦合器A-1的耦合端口相对于所述双工器A0-1的发射信号为正向耦合端口；本装置的抵消器电路B需在所述无线直放站内新增并构成抵消器电路B-1，且其射频端口和耦合器A-1的耦合端口直接连接，抵消器电路B-1的幅度调整和相位调整由数字处理单元E运算输出的幅度、相位控制参数实现；本装置的天馈组件A2和天线A1即为所述无线直放站的天线链路上的对应组件A2-1和天线A1-1；对于第二装置的说明为：本装置的双工器A0为无线直放站的双工器A0-2；本装置的无源互调检测电路D复用无线直放站的接收链路的组件或单元，构成无源互调检测电路D-2；本装置的发射电路单元F复用无线直放站的发射电路单元F-2；本装置的数字处理单元E复用无线直放站的数字处理单元E，所述数字处理单元E中对应“一种自适应抵消无线收发***中无源互调信号的方法”的程序将集成于无线直放站的整机程序中；本装置的耦合器A需在所述无线直放站内新增并在第二装置中称为耦合器A-2，且其一个主通路端口和无线直放站的双工器A0-2天线口直接连接，耦合器A-2的耦合端口相对于所述双工器A0-2的发射信号为正向耦合端口；本装置的抵消器电路B需在所述无线直放站内新增并构成抵消器电路B-2，且其射频端口和耦合器A-2的耦合端口直接连接，抵消器电路B-2的幅度调整和相位调整由数字处理单元E运算输出的幅度、相位控制参数实现；本装置的天馈组件A2和天线A1即为所述无线直放站的天线链路上的对应组件A2-2和天线A1-2；此时所述无线直放站中第一装置和第二装置的连接方式与本发明中描述的无源互调抵消装置相同，第一装置和第二装置之间通过数字处理单元E联合为一体。In addition, an example of the application of the device described in this embodiment to a wireless repeater station is shown in FIG. 19: the wireless repeater station includes a coupler A-1, a coupler A-2, and a canceller circuit B-1 to cancel Circuit B-2, receiving circuit unit D-1, receiving circuit unit D-2, digital processing unit E, duplexer A0-1, duplexer A0-2, transmitting circuit unit F-1, transmitting circuit unit F -2; take duplexer A0-1 and duplexer A0-2 as passive intermodulation index optimization objects and form two sets of devices with passive intermodulation cancellation function around the duplexer, with duplexer A0- 1 is a device with passive intermodulation cancellation function composed of passive intermodulation index optimization objects, referred to as the first device, and a passive intermodulation cancellation function composed of duplexer A0-2 as passive intermodulation index optimization objects The device is called the second device for short; for the first device: the duplexer A0 of the device is the duplexer A0-1 of the wireless repeater; the passive intermodulation detection circuit D of the device multiplexes the wireless repeater The components or units of the receiving link constitute the passive intermodulation detection circuit D-1; the transmission circuit unit F of the device multiplexes the transmission circuit unit F-1 of the wireless repeater; the digital processing unit E of the device multiplexes the wireless The digital processing unit E of the repeater, the program corresponding to "a method for adaptively canceling the passive intermodulation signal in the wireless transceiver system" in the digital processing unit E will be integrated into the whole program of the wireless repeater; The coupler A of this device needs to be newly added in the wireless repeater and is called the coupler A-1 in the first device, and its one main access port and the duplexer A0-1 antenna port of the wireless repeater Direct connection, the coupling port of the coupler A-1 is a forward coupling port with respect to the transmitted signal of the duplexer A0-1; the canceler circuit B of the device needs to be newly added in the wireless repeater and constitute a cancellation Circuit B-1, and its RF port is directly connected to the coupling port of the coupler A-1. The amplitude adjustment and phase adjustment of the canceler circuit B-1 are realized by the amplitude and phase control parameters calculated by the digital processing unit E; The antenna feed component A2 and antenna A1 of the device are the corresponding components A2-1 and antenna A1-1 on the antenna link of the wireless repeater; the description of the second device is: the duplexer A0 of the device is The duplexer A0-2 of the wireless repeater station; the passive intermodulation detection circuit D of the device multiplexes the components or units of the receiving link of the wireless repeater station to form the passive intermodulation detection circuit D-2; the device The transmission circuit unit F of the multiplexed transmission circuit unit F-2 of the wireless repeater station; the digital processing unit E of the device multiplexes the digital processing unit E of the wireless repeater station, the digital processing unit E corresponds to a The program adapted to the method of canceling passive intermodulation signals in the wireless transceiver system will be integrated into the overall program of the wireless repeater; the coupler A of this device needs to be added in the wireless repeater and added to the second device It is called coupler A-2 in the above, and one of its main access ports is directly connected to the antenna port of duplexer A0-2 of the wireless repeater. The coupling port of coupler A-2 is relative to the duplexer A0-2. 'S launch The signal is a forward coupling port; the canceler circuit B of this device needs to be newly added to the wireless repeater and constitute a canceler circuit B-2, and its RF port is directly connected to the coupling port of the coupler A-2 to cancel The amplitude adjustment and phase adjustment of the amplifier circuit B-2 are realized by the amplitude and phase control parameters calculated by the digital processing unit E; the antenna feed component A2 and the antenna A1 of the device are on the antenna link of the wireless repeater Corresponding component A2-2 and antenna A1-2; the connection between the first device and the second device in the wireless repeater at this time is the same as the passive intermodulation cancellation device described in the present invention, the first device and the second device The devices are integrated into one by the digital processing unit E.

上述技术方案中的一种自适应抵消无线收发***中无源互调信号的方法，包括以下步骤：A method for adaptively canceling passive intermodulation signals in a wireless transceiver system in the above technical solution includes the following steps:

此外，本实施例所述装置应用在无线收发设备且无线收发设备有多个收发链路时：所述每一收发链路中双工器的每个天线口后均紧邻一个耦合器A，以及抵消器电路B；In addition, when the apparatus in this embodiment is applied to a wireless transceiver device and the wireless transceiver device has multiple transceiver links: each antenna port of the duplexer in each transceiver link is immediately adjacent to a coupler A, and Canceller circuit B;

此外，本实施例所述装置应用在无线收发设备，在多射频链路使用实例之一的示意图如说明书附图20所示：整个链路包括多个无线收发设备，多射频***合路器H，天线A1以及天馈组件A2等；且每个支路均有一个无源互调抵消装置与的无线收发设备单一收发链路连接，各个分支链路上双工器A0、天线A1、天馈组件A2等产生的无源互调以及多射频***合路器H产生的无源互调落入到接收频段的分量均可在一定范围内被抵消；In addition, the device described in this embodiment is applied to a wireless transceiver device. A schematic diagram of one example of the use of a multi-radio link is shown in FIG. 20 of the specification: the entire link includes multiple wireless transceiver devices, and the multiple radio frequency system combiner , Antenna A1 and antenna feed component A2, etc.; and each branch has a passive intermodulation cancellation device connected to a single transceiver link of the wireless transceiver equipment, and the duplexer A0, antenna A1, antenna feed on each branch link The passive intermodulation generated by component A2 and the like and the passive intermodulation generated by the combiner H of the multi-radio frequency system falling into the receiving frequency band can be cancelled within a certain range;

此外，本实施例所述装置应用在无线收发设备，且所述的无线收发设备有多个收发链路时，使用实例之一的示意图如说明书附图21所示：整个链路包括无线收发设备，多根天线A1-1，A1-2，……，以及多个天馈组件A2-1，A2-2，……；无线收发设备每个收发链路均有一个无源互调抵消装置连接，各个分支链路上双工器、天馈组件、天线等产生的无源互调落入到接收频段的分量均可在一定范围内被抵消；In addition, when the apparatus in this embodiment is applied to a wireless transceiver device, and the wireless transceiver device has multiple transceiver links, a schematic diagram of one of the use examples is shown in FIG. 21 of the specification: the entire link includes the wireless transceiver device , Multiple antennas A1-1, A1-2, ..., and multiple antenna feed components A2-1, A2-2, ...; wireless transceiver equipment, each transceiver link has a passive intermodulation cancellation device connected The components of passive intermodulation generated by duplexers, antenna feed components, antennas, etc. on each branch link falling into the receiving frequency band can be cancelled within a certain range;

应用本发明设计完成的装置安装于无线收发***后，在链路无源互调信号落入接收频段的分量为-90dBm/Hz到-95dBm/Hz时，所述装置可以使无源互调信号抵消结果大于20dB，在链路无源互调信号落入接收频段的分量优于-95dBm/Hz时，所述装置可以使无源互调信号抵消结果至少优于-115dBm/Hz。After the device designed by applying the invention is installed in a wireless transceiver system, when the component of the link passive intermodulation signal falling into the receiving frequency band is -90dBm/Hz to -95dBm/Hz, the device can make the passive intermodulation signal The cancellation result is greater than 20dB. When the component of the link passive intermodulation signal falling into the receiving frequency band is better than -95dBm/Hz, the device can make the passive intermodulation signal cancellation result better than -115dBm/Hz.

应当理解的是，以上仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本领域的技术人员在本发明所揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。It should be understood that the above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or changes within the technical scope disclosed by the present invention. Replacement should be covered within the protection scope of the present invention.

Claims

一种自适应抵消无源互调信号的装置，其特征在于：它包括一个耦合器(A)，抵消器电路(B)，无源互调检测电路(D)，数字处理单元(E)，双工器(A0)，发射电路单元(F)，天馈组件(A2)，天线(A1)；A device for adaptively canceling passive intermodulation signals, characterized in that it includes a coupler (A), a canceller circuit (B), a passive intermodulation detection circuit (D), and a digital processing unit (E), Duplexer (A0), transmitting circuit unit (F), antenna feeder component (A2), antenna (A1);

所述发射电路单元(F)的大于某一射频功率值的信号使所述双工器(A0)及其天线链路产生无源互调信号，并且该无源互调信号中有落入到双工器(A0)接收频段的且与接收信号有一定频率间隔的分量；The signal of the transmitting circuit unit (F) greater than a certain radio frequency power value causes the duplexer (A0) and its antenna link to generate a passive intermodulation signal, and some of the passive intermodulation signal falls into Duplexer (A0) receiving frequency band components with a certain frequency interval from the received signal;

所述耦合器(A)从双工器(A0)的天线口的链路上耦合射频信号输出给抵消器电路(B)；所述耦合器(A)的一个主通路端口与所述双工器(A0)的天线口连接，另一个主通路端口与天线链路上的天馈组件(A2)连接，耦合器(A)的耦合端口和抵消器电路(B)的射频端口电连接；The coupler (A) couples the RF signal from the link of the antenna port of the duplexer (A0) to the canceller circuit (B); a main path port of the coupler (A) and the duplexer The antenna port of the antenna (A0) is connected, the other main path port is connected to the antenna feed component (A2) on the antenna link, and the coupling port of the coupler (A) and the RF port of the canceler circuit (B) are electrically connected;

所述抵消器电路(B)将利用来自于耦合器(A)的射频信号中的发射信号在抵消器电路(B)中互调信号发生器(B2)产生出与所述射频信号中的无源互调信号频率相同、幅度不同和相位不同的互调信号；所述互调信号反射后通过抵消器电路(B)中的调幅调相器(B1)的幅度调整和相位调整，并耦合输出至耦合器(A)的主通路，形成与所述无源互调信号中落入接收频段的且与接收信号有一定频率间隔的分量频率相同、幅度相同和相位相反的互调抵消信号；The canceller circuit (B) will use the transmitted signal from the radio frequency signal from the coupler (A) in the canceller circuit (B) intermodulation signal generator (B2) to generate Intermodulation signals with the same frequency, different amplitudes and different phases of the source intermodulation signals; after being reflected, the intermodulation signals pass the amplitude adjustment and phase adjustment of the amplitude modulation phase modulator (B1) in the canceller circuit (B) and are coupled to output The main path to the coupler (A) forms an intermodulation cancellation signal having the same frequency, the same amplitude and the opposite phase as the component frequency that falls into the receiving frequency band and has a certain frequency interval from the receiving signal in the passive intermodulation signal;

所述无源互调检测电路(D)将所述双工器(A0)接收端口后的射频信号经过增益可调控的放大，下变频，最终转换成数字信号并输入到数字处理单元(E)，所述接收信号和无源互调信号落入接收频段的分量；The passive intermodulation detection circuit (D) amplifies the RF signal after the receiving port of the duplexer (A0) through a gain controllable, down-converts, and finally converts it into a digital signal and inputs it to the digital processing unit (E) , The component of the received signal and the passive intermodulation signal falling into the receiving frequency band;

所述数字处理单元(E)依据发射信号频率信息计算得出无源互调信号的检测幅值并与无源互调预设值进行对比；根据当所述检测幅值与所述预设值对比结果，所述抵消器电路(B)选择是否产生互调抵消信号；所述数字处理单元(E)产生触发信号输出至发射电路单元(F)从而触发发射电路单元(F)产生射频信号；所述数字处理单元(E)通过多路数模转换器与抵消器电路(B)连接，将幅度、相位的控制量传递给抵消器电路(B)。The digital processing unit (E) calculates the detected amplitude of the passive intermodulation signal according to the frequency information of the transmitted signal and compares it with the preset value of the passive intermodulation; according to the current detection amplitude and the preset value As a result of the comparison, the canceller circuit (B) selects whether to generate an intermodulation cancellation signal; the digital processing unit (E) generates a trigger signal and outputs it to the transmitting circuit unit (F) to trigger the transmitting circuit unit (F) to generate a radio frequency signal; The digital processing unit (E) is connected to the canceller circuit (B) through a multi-channel digital-to-analog converter, and transfers the controlled amounts of amplitude and phase to the canceller circuit (B).
根据权利要求1所述的自适应抵消无源互调信号的装置，其特征在于；所述装置中的双工器(A0)代表无线收发设备中的无源器件；所述天馈组件(A2)和天线(A1)代表无线收发***的天线链路中的无源器件，其中天馈组件(A2)代表天线链路中单个或多个无源器件的组合，这些无源器件包括但不限于电缆、连接器、耦合器、合路器。The apparatus for adaptively canceling passive intermodulation signals according to claim 1, characterized in that: the duplexer (A0) in the apparatus represents a passive device in a wireless transceiver device; and the antenna feed component (A2) ) And antenna (A1) represent passive devices in the antenna link of the wireless transceiver system, where the antenna feed component (A2) represents a combination of single or multiple passive devices in the antenna link, these passive devices include but are not limited to Cables, connectors, couplers, combiners.
根据权利要求1所述的自适应抵消无源互调信号的装置，其特征在于：The apparatus for adaptively canceling passive intermodulation signals according to claim 1, characterized in that:

所述抵消器电路(B)将利用来自于耦合器(A)的射频信号中的发射信号在抵消器电路(B)中的互调信号发生器(B2)上产生出与所述射频信号中的无源互调信号频率相同、幅度不同和相位不同的互调信号，且该互调信号中落入接收频段的单个3阶分量、或单个5阶分量、或单个更高阶次分量，或者多个不同频点的3阶分量、或多个不同频点的5阶分量、或多个不同频点的更高阶次分量，或者同时有3阶分量、5阶分量甚至更高阶次分量之间的幅度关系和相位关系与所述双工器(A0)及其天线链路产生的无源互调信号中落入接收频段的单个3阶分量、或单个5阶分量、或单个更高阶次分量，或者多个不同频点的3阶分量、或多个不同频点的5阶分量、或多个不同频点的更高阶次分量，或者同时有3阶分量、5阶分量甚至更高阶次分量之间的幅值关系和相位关系基本一致；The canceler circuit (B) will use the transmitted signal from the radio frequency signal from the coupler (A) to generate the same signal as the radio frequency signal on the intermodulation signal generator (B2) in the canceler circuit (B) Of passive intermodulation signals of the same frequency, different amplitudes and different phases, and the intermodulation signal falls into a single 3rd-order component, or a single 5th-order component, or a single higher-order component of the receiving frequency band, or 3rd order components at multiple different frequencies, or 5th order components at multiple different frequencies, or higher order components at multiple different frequencies, or 3rd order components, 5th order components or even higher order components at the same time The amplitude relationship and phase relationship between the passive intermodulation signal generated by the duplexer (A0) and its antenna link fall into a single third-order component, or a single fifth-order component, or a single higher Order components, or 3rd order components at multiple different frequencies, or 5th order components at multiple different frequencies, or higher order components at multiple different frequencies, or 3rd order components, 5th order components, or even The amplitude relationship and phase relationship between higher order components are basically the same;

而耦合到抵消器电路(B)的射频信号中的接收信号和无源互调信号的功率在所述互调信号发生器(B2)上产生的互调信号的幅值远小于上述无源互调信号的幅值，不对无源互调抵消结果产生影响；However, the amplitude of the intermodulation signal generated by the power of the received signal and the passive intermodulation signal in the radio frequency signal coupled to the canceller circuit (B) on the intermodulation signal generator (B2) is much smaller than that of the passive intermodulation The amplitude of the modulated signal does not affect the passive intermodulation cancellation result;

所述互调信号反射后通过抵消器电路(B)中的调幅调相器(B1)的幅度调整和相位调整，并耦合输出至耦合器(A)的主通路，形成与所述无源互调信号中落入接收频段的且与接收信号有一定频率间隔的分量频率相同、幅度相同和相位相反的互调抵消信号，该互调抵消信号与所述无源互调信号中的分量进行抵消，抵消后的无源互调信号小于等于无源互调预设值；同时双工器(A0)及其天线链路中的发射信号和接收信号在双工器(A0)及其天线链路中正常运作。After being reflected, the intermodulation signal passes through the amplitude adjustment and phase adjustment of the amplitude modulation phase modulator (B1) in the canceller circuit (B), and is coupled to the main path of the coupler (A) to form a passive mutual An intermodulation cancellation signal having the same frequency, the same amplitude, and the opposite phase in the modulated signal that falls into the receiving frequency band and has a certain frequency interval from the received signal, the intermodulation cancellation signal cancels the component in the passive intermodulation signal , The passive intermodulation signal after cancellation is less than or equal to the preset value of passive intermodulation; at the same time, the transmitted and received signals in the duplexer (A0) and its antenna link are in the duplexer (A0) and its antenna link In normal operation.
根据权利要求1所述的自适应抵消无源互调信号的装置，其特征在于，所述数字处理单元(E)用于依据发射信号频率信息，实现对无源互调信号的幅值检测，以及在检测幅值大于所述预设值时，控制所述抵消器电路(B)产生出互调抵消信号与所述射频信号中的无源互调信号进行抵消的方法如下：The apparatus for adaptively canceling passive intermodulation signals according to claim 1, characterized in that the digital processing unit (E) is used to detect the amplitude of the passive intermodulation signals according to the frequency information of the transmitted signal, And when the detection amplitude is greater than the preset value, the method for controlling the canceler circuit (B) to generate the intermodulation cancellation signal and the passive intermodulation signal in the radio frequency signal to cancel is as follows:

所述数字处理单元(E)首先依据发射信号频率信息，计算出与之相关的无源互调信号的频率信息，并将其转换为无源互调信号的滤波参数，然后依据接收信号频率、带宽信息与无源互调信号频率、带宽信息求得它们之间的频率间隔，再选择相应的数字滤波方式和积分方式，最终实现对无源互调信号的幅值检测；然后将所述无源互调信号的检测幅值与无源互调预设值进行对比；The digital processing unit (E) first calculates the frequency information of the passive intermodulation signal related to it based on the frequency information of the transmitted signal, and converts it into the filtering parameter of the passive intermodulation signal, then according to the received signal frequency, The bandwidth information and the frequency and bandwidth information of the passive intermodulation signal are used to obtain the frequency interval between them, and then the corresponding digital filtering method and integration method are selected to finally realize the amplitude detection of the passive intermodulation signal; The detection amplitude of the source intermodulation signal is compared with the preset value of passive intermodulation;

当所述检测幅值小于等于所述预设值时，所述抵消器电路(B)不产生互调抵消信号，不对所述双工器(A0)及其天线链路的无源互调指标产生影响；当所述检测幅值大于所述预设值时，控制所述抵消器电路(B)对其幅度和相位的调整产生出与所述双工器(A0)及其天线链路的无源互调信号频率相同、幅度相同和相位相反的互调抵消信号与所述射频信号中的无源互调信号进行抵消，并保持这种依据无源互调信号的幅值检测结果实时调控所述抵消器电路(B)幅度和相位使无源互调信号抵消结果小于等于所述预设值的工作状态。When the detected amplitude is less than or equal to the preset value, the canceler circuit (B) does not generate an intermodulation cancellation signal, and does not correct the passive intermodulation index of the duplexer (A0) and its antenna link Have an effect; when the detected amplitude is greater than the preset value, control the canceller circuit (B) to adjust its amplitude and phase to produce a link with the duplexer (A0) and its antenna link The intermodulation cancellation signal of the same frequency, the same amplitude and the opposite phase of the passive intermodulation signal cancels the passive intermodulation signal in the radio frequency signal, and maintains the real-time adjustment based on the amplitude detection result of the passive intermodulation signal The amplitude and phase of the canceller circuit (B) make the passive intermodulation signal cancellation result be less than or equal to the working state of the preset value.
根据权利要求1所述的自适应抵消无源互调信号的装置，其特征在于，所述数字处理单元(E)通过发射信号鉴频电路(E1)从所述装置的发射电路单元(F)上获取发射信号，转换为数字信号，输入数字处理单元(E)进行鉴频处理，获取相关发射信号频率信息，并由发射信号和接收信号之间的双工频率间隔推算相应接收信号频率信息；或通过数字处理单元(E)中的信息交互接口直接从该装置的输入信息中获取。The device for adaptively canceling passive intermodulation signals according to claim 1, characterized in that the digital processing unit (E) is transmitted from the transmitting circuit unit (F) of the device through a transmitting signal frequency discriminating circuit (E1) Obtain the transmitted signal on the top, convert it to a digital signal, enter the digital processing unit (E) for frequency discrimination processing, obtain the relevant transmitted signal frequency information, and calculate the corresponding received signal frequency information from the duplex frequency interval between the transmitted signal and the received signal; Or it can be directly obtained from the input information of the device through the information interaction interface in the digital processing unit (E).
根据权利要求3所述的自适应抵消无源互调信号的装置，其特征在于，激励所述双工器(A0)及其天线链路产生无源互调信号的信号和激励所述互调信号发生器(B2)产生互调信号的信号是同源的，均来源于发射电路单元(F)的发射信号，所以无源器件产生的无源互调信号和互调信号发生器(B2)产生的互调信号的频率相同、带宽相同；所述天线链路是从双工器(A0)天线口到天线(A1)这段链路，所述天馈组件(A2)代表天线链路中单个或多个无源器件的组合，这些无源器件包括但不限于电缆、连接器、耦合器、合路器；所述发射信号由多音信号构成或者由多载波调制信号构成。The device for adaptively canceling passive intermodulation signals according to claim 3, characterized in that a signal that generates a passive intermodulation signal by exciting the duplexer (A0) and its antenna link and excites the intermodulation The signal generated by the signal generator (B2) is the same as the signal generated by the intermodulation signal, which is derived from the transmission signal of the transmission circuit unit (F), so the passive intermodulation signal and the intermodulation signal generator (B2) generated by the passive device The generated intermodulation signal has the same frequency and the same bandwidth; the antenna link is the link from the antenna port of the duplexer (A0) to the antenna (A1), and the antenna feed component (A2) represents the antenna link A combination of single or multiple passive devices, including but not limited to cables, connectors, couplers, and combiners; the transmit signal is composed of multi-tone signals or multi-carrier modulated signals.
根据权利要求1所述的自适应抵消无源互调信号的装置，其特征在于，当所述双工器(A0)或天馈组件(A2)或天线(A1)单个产生的或多个无源器件同时产生并叠加而成的与接收信号有一定频率间隔的无源互调信号中仅会有单个3阶、或单个5阶或单个更高阶次分量落入双工器(A0)的接收频带且造成从双工器(A0)接收端口测试的无源互调指标达不到预设值要求时，为使所述双工器(A0)接收端口的无源互调值满足预设值要求且使本装置的抵消能力大于20dB：所述互调信号发生器(B2)所能产生的所述互调抵消信号的最大幅值要大于所述双工器(A0)及其天线链路的无源互调信号中落入到接收频段对应频率的单个分量的幅值；The device for adaptively canceling passive intermodulation signals according to claim 1, characterized in that when the duplexer (A0) or the antenna feeder component (A2) or the antenna (A1) generates a single or multiple The passive intermodulation signal generated by the source device and superimposed at a certain frequency interval from the received signal will only have a single 3rd order, or a single 5th order or a single higher order component falling into the duplexer (A0). When the receiving frequency band causes the passive intermodulation index tested from the receiving port of the duplexer (A0) to fail to meet the preset value, the passive intermodulation value of the receiving port of the duplexer (A0) meets the preset value The value requires that the cancellation capability of the device is greater than 20dB: the maximum amplitude of the intermodulation cancellation signal that can be generated by the intermodulation signal generator (B2) is greater than the duplexer (A0) and its antenna chain The amplitude of the single component of the passive intermodulation signal that falls into the corresponding frequency of the receiving frequency band;

当所述双工器(A0)或天馈组件(A2)或天线(A1)单个产生的或多个无源器件同时产生并叠加而成的与接收信号有一定频率间隔的无源互调信号中仅有多个不同频率的3阶、或多个不同频率的5阶或多个不同频率的更高阶次分量落入双工器(A0)的接收频带且造成从双工器(A0)接收端口测试的无源互调指标达不到预设值要求时，为使所述双工器(A0)接收端口的无源互调值满足预设值要求且使本装置的抵消能力大于20dB：所述互调信号发生器(B2)所能产生的对应无源互调分量频率的互调抵消信号的最大幅值要大于所述双工器(A0)及其天线链路的无源互调信号中落入到接收频段的多个对应频率分量的幅值；所述互调信号发生器(B2)上产生的互调信号中多个特定阶次分量之间的相位关系与所述双工器(A0)及其天线链路产生的无源互调信号中多个特定阶次分量之间的相位关系基本一致；When the duplexer (A0) or the antenna feeder component (A2) or the antenna (A1) individually generates or multiple passive devices simultaneously generate and superimpose a passive intermodulation signal with a certain frequency interval from the received signal There are only multiple third-order components of different frequencies, or multiple fifth-order components of higher frequencies or higher-order components of different frequencies falling into the receiving band of the duplexer (A0) and causing the slave duplexer (A0) When the passive intermodulation index of the receiving port test fails to meet the preset value requirement, in order to make the passive intermodulation value of the receiving port of the duplexer (A0) meet the preset value requirement and make the device's cancellation capability greater than 20dB : The maximum amplitude of the intermodulation cancellation signal corresponding to the frequency of the passive intermodulation component that can be generated by the intermodulation signal generator (B2) is greater than the passive intermodulation of the duplexer (A0) and its antenna link Amplitudes of multiple corresponding frequency components that fall into the receiving frequency band in the modulated signal; the phase relationship between multiple specific order components in the intermodulation signal generated on the intermodulation signal generator (B2) and the double The phase relationship between multiple specific order components in the passive intermodulation signal generated by the A0 and its antenna link is basically the same;

当所述双工器(A0)或天馈组件(A2)或天线(A1)单个产生的或多个无源器件同时产生并叠加而成的与接收信号有一定频率间隔的无源互调信号中同时有3阶、5阶或更高阶次分量落入双工器(A0)的接收频带且都造成从双工器(A0)接收端口测试的无源互调指标达不到预设值要求时，为使所述双工器(A0)接收端口的无源互调值满足预设值要求且使本装置的抵消能力大于20dB：所述互调信号发生器(B2)所能产生的对应无源互调分量频率的所述互调抵消信号的最大幅值要大于所述双工器(A0)及其天线链路的无源互调信号中落入到接收频段的多个对应频率分量的幅值；所述互调信号发生器(B2)上产生的互调信号中多个特定阶次分量之间的幅度关系和相位关系与所述双工器(A0)及其天线链路产生的无源互调信号中多个特定阶次分量之间的幅值关系和相位关系基本一致。When the duplexer (A0) or the antenna feeder component (A2) or the antenna (A1) individually generates or multiple passive devices simultaneously generate and superimpose a passive intermodulation signal with a certain frequency interval from the received signal At the same time, there are 3, 5 or higher order components that fall into the receiving band of the duplexer (A0) and all cause the passive intermodulation index tested from the receiving port of the duplexer (A0) to fail to reach the preset value When required, in order to make the passive intermodulation value of the receiving port of the duplexer (A0) meet the preset value requirements and make the cancellation capability of the device greater than 20dB: what the intermodulation signal generator (B2) can generate The maximum amplitude of the intermodulation cancellation signal corresponding to the frequency of the passive intermodulation component is greater than the multiple corresponding frequencies that fall into the receiving frequency band in the passive intermodulation signal of the duplexer (A0) and its antenna link The amplitude of the component; the amplitude relationship and phase relationship between multiple specific order components in the intermodulation signal generated on the intermodulation signal generator (B2) and the duplexer (A0) and its antenna link The amplitude relationship and phase relationship between multiple specific order components in the generated passive intermodulation signal are basically the same.
根据权利要求1所述的自适应抵消无源互调信号的装置，其特征在于，当无源互调检测电路(D)中的射频信号过大造成链路阻塞时，数字处理单元(E)缩小无源互调检测电路(D)的链路增益以便正常处理接收信号并停止检测无源互调信号幅值；The apparatus for adaptively canceling passive intermodulation signals according to claim 1, wherein when the radio frequency signal in the passive intermodulation detection circuit (D) is too large and the link is blocked, the digital processing unit (E) Reduce the link gain of the passive intermodulation detection circuit (D) to process the received signal normally and stop detecting the amplitude of the passive intermodulation signal;

当无源互调检测电路(D)没有阻塞时，所述数字处理单元(E)在进行无源互调幅值计算过程中，处理的来源于无源互调检测电路(D)的信号中包含有无源互调信号和接收信号且无源互调信号和接收信号之间存在频率间隔。When the passive intermodulation detection circuit (D) is not blocked, the digital processing unit (E) processes the signal from the passive intermodulation detection circuit (D) during the calculation of the passive intermodulation amplitude The passive intermodulation signal and the received signal are included and there is a frequency separation between the passive intermodulation signal and the received signal.
根据权利要求4所述的自适应抵消无源互调信号的装置，其特征在于，所述数字处理单元(E)计算无源互调信号幅值的方法为：The device for adaptively canceling passive intermodulation signals according to claim 4, characterized in that the method for calculating the amplitude of the passive intermodulation signal by the digital processing unit (E) is:

数字处理单元(E)首先依据发射信号频率信息计算出与之相关的无源互调信号的频率信息，The digital processing unit (E) first calculates the frequency information of the passive intermodulation signal related to it based on the frequency information of the transmitted signal,

然后依据接收信号频率、带宽信息与无源互调信号频率、带宽信息求得它们之间的频率间隔，并依据该频率间隔选择合适的算法计算无源互调信号幅值；Then according to the received signal frequency, bandwidth information and passive intermodulation signal frequency, bandwidth information to obtain the frequency interval between them, and according to the frequency interval to select an appropriate algorithm to calculate the passive intermodulation signal amplitude;

所述计算无源互调信号幅值的算法包含但不限于直接滤波积分法和分段滤波积分法；The algorithm for calculating the amplitude of the passive intermodulation signal includes but is not limited to the direct filter integration method and the segmented filter integration method;

所述直接滤波积分法是指依据无源互调信号带宽直接数字滤波并积分求幅度，此时所述无源互调信号落入到接收频段的各阶次分量与接收信号之间的频率间隔要大于等于无源互调信号的数字滤波算法中数字滤波器通带到阻带的过渡带带宽，此频率间隔即是采用直接滤波积分法的依据；The direct filtering integration method refers to directly digitally filtering and integrating the amplitude based on the bandwidth of the passive intermodulation signal, at which time the frequency interval between each order component of the passive intermodulation signal falling into the receiving frequency band and the receiving signal To be greater than or equal to the passive intermodulation signal in the digital filtering algorithm of the digital filter passband to stopband transition band bandwidth, this frequency interval is the basis of the direct filter integration method;

所述分段滤波积分法是指将无源互调信号带宽分成数个子带宽，依据每个子带宽进行数字滤波并积分求幅度，再将所有子带宽对应的幅度进行累加获得整个信号幅值，此时所述各阶次分量与接收信号之间的频率间隔要大于等于各阶次分量边子带信号的数字滤波器通带到阻带的过渡带带宽，此频率间隔即是采用分段滤波积分法的依据。The segmented filtering integration method refers to dividing the bandwidth of the passive intermodulation signal into several sub-bandwidths, performing digital filtering and integrating to obtain the amplitude according to each sub-bandwidth, and then accumulating the amplitudes corresponding to all the sub-bandwidths to obtain the entire signal amplitude. When the frequency interval between each order component and the received signal is greater than or equal to the bandwidth of the transition band from the pass band to the stop band of the digital sub-band signal of each order component, this frequency interval is the use of segmented filter integration The basis of law.
根据权利要求1所述的自适应抵消无源互调信号的装置，其特征在于，所述抵消器电路(B)通过耦合器(A)与双工器(A0)天线口后的天线链路连接；所述耦合器(A)的一个主通路端口与双工器(A0)天线口连接且距离需控制在0到1米范围内，具体长度由无源互调抵消最佳效果确定；耦合器(A)的另一个主通路端口与天馈组件(A2)连接，耦合器(A)的耦合端口连接抵消器电路(B)；所述耦合器(A)的***损耗小于0.2dB，耦合器(A)的耦合度范围为25dB到45dB，耦合器(A)的耦合端口相对于发射信号为正向耦合端口，耦合器(A)的承载功率需大于该装置的最大发射功率峰值，耦合器(A)的带宽包含发射频段，接收频段以及两者间的双工间隔，耦合器(A)的频带内增益波动与发射频段、接收频段相关且需在一定的门限值范围内；耦合器(A)的无源互调指标对天馈组件(A2)的无源互调指标要求；所述抵消器电路(B)的承载功率门限值需大于等于耦合器(A)的功率门限值与耦合器(A)的耦合度之差值；为使抵消器电路(B)中互调信号发生器(B2)能产生无源互调抵消信号，加载在所述抵消器电路(B)的发射信号功率的最小值需大于一定的功率门限值。The device for adaptively canceling passive intermodulation signals according to claim 1, characterized in that the canceller circuit (B) connects the antenna link behind the antenna port of the duplexer (A0) through the coupler (A) Connection; a main access port of the coupler (A) is connected to the duplexer (A0) antenna port and the distance needs to be controlled in the range of 0 to 1 meter, the specific length is determined by the best effect of passive intermodulation cancellation; coupling The other main path port of the coupler (A) is connected to the antenna feed component (A2), and the coupling port of the coupler (A) is connected to the canceler circuit (B); the insertion loss of the coupler (A) is less than 0.2 dB, and the coupling The coupling degree range of the coupler (A) is 25dB to 45dB. The coupling port of the coupler (A) is a forward coupling port relative to the transmitted signal. The carrying power of the coupler (A) must be greater than the maximum transmit power peak of the device. The bandwidth of the device (A) includes the transmitting frequency band, the receiving frequency band and the duplex interval between the two. The gain fluctuation in the frequency band of the coupler (A) is related to the transmitting frequency band and the receiving frequency band and needs to be within a certain threshold; coupling The passive intermodulation index of the device (A) requires the passive intermodulation index of the antenna feeder (A2); the load-carrying power threshold of the canceler circuit (B) must be greater than or equal to the power gate of the coupler (A) The difference between the limit value and the coupling degree of the coupler (A); in order for the intermodulation signal generator (B2) in the canceller circuit (B) to generate a passive intermodulation cancellation signal, it is loaded on the canceller circuit (B) ) The minimum value of the transmitted signal power must be greater than a certain power threshold.
根据权利要求1所述的自适应抵消无源互调信号的装置，其特征在于，无源互调检测电路(D)包括低噪声放大器、下变频模块、高速模数转换器，噪声放大器的输入端与双工器(A0)的接收端口电连接，噪声放大器的输出端经下变频模块与高速模数转换器的输入端电连接，高速模数转换器的输出端与数字处理单元(E)的输入端电连接；所述无源互调检测电路(D)的增益由需求的无源互调预设值、无源互调检测电路(D)中高速模数转换器的最小采样功率、链路噪声系数等确定；所述无源互调检测电路(D)的接收信号功率的最大值大于等于该装置实际对应的通信标准所规定的最大接收信号功率。The device for adaptively canceling passive intermodulation signals according to claim 1, wherein the passive intermodulation detection circuit (D) includes a low-noise amplifier, a down-conversion module, a high-speed analog-to-digital converter, and a noise amplifier input Is connected to the receiving port of the duplexer (A0), the output of the noise amplifier is electrically connected to the input of the high-speed analog-to-digital converter via the down-conversion module, and the output of the high-speed analog-to-digital converter is connected to the digital processing unit (E) The input end of the electronic connection; the gain of the passive intermodulation detection circuit (D) is preset by the required passive intermodulation, the minimum sampling power of the high-speed analog-to-digital converter in the passive intermodulation detection circuit (D), The link noise figure is determined; the maximum value of the received signal power of the passive intermodulation detection circuit (D) is greater than or equal to the maximum received signal power specified by the communication standard corresponding to the device.
根据权利要求5所述的自适应抵消无源互调信号的装置，其特征在于，所述数字处理单元(E)通过多路数模转换器与抵消器电路(B)连接，将幅度、相位的控制量传递给抵消器电路(B)，所述抵消器电路(B)的幅度调整精度和相位调整精度的要求主要来源于无源互调信号抵消能力需求；The device for adaptively canceling passive intermodulation signals according to claim 5, characterized in that the digital processing unit (E) is connected to the canceller circuit (B) through a multi-channel digital-to-analog converter to connect the amplitude and phase The control amount of is transferred to the canceller circuit (B), the requirements for amplitude adjustment accuracy and phase adjustment accuracy of the canceller circuit (B) are mainly derived from the requirement of the passive intermodulation signal cancellation capability;

所述数字处理单元(E)至少包含具备数字信号处理功能的逻辑处理与运算处理器件，用于数字信号的接收、算法处理、数字信号的输出、控制和配置信号的输出，所述逻辑处理与运算处理器件包含但不限于现场可编程门阵列器件，中央处理器，数字信号处理器；所述数字处理单元(E)的信息交互接口的硬件构成包括但不限于以太网接口、光纤接口、RS-485总线接口；所述数字处理单元(E)中的数模转换器的位数范围在10～18位之间，且至少有3个数模转换器；The digital processing unit (E) includes at least a logic processing and arithmetic processing device with digital signal processing functions for digital signal reception, algorithm processing, digital signal output, control and configuration signal output. The logic processing and Operation processing devices include but are not limited to field programmable gate array devices, central processors, and digital signal processors; the hardware configuration of the information interaction interface of the digital processing unit (E) includes, but is not limited to, Ethernet interface, optical fiber interface, RS -485 bus interface; the number of digits of the digital-to-analog converter in the digital processing unit (E) is between 10 and 18 bits, and there are at least 3 digital-to-analog converters;

所述数字处理单元(E)与无源互调检测电路(D)之间至少设有两个接口：一个接口作用是获取无源互调检测电路(D)中高速模数转换器的采样信号，从而进行无源互调信号的数字滤波和幅度计算；另一个接口的作用是通过总线配置无源互调检测电路(D) 的参数，例如本振频率，放大器增益，所述总线包括但不限于I2C总线、SPI总线；At least two interfaces are provided between the digital processing unit (E) and the passive intermodulation detection circuit (D): one interface is used to obtain the sampling signal of the high-speed analog-to-digital converter in the passive intermodulation detection circuit (D) , So as to perform digital filtering and amplitude calculation of passive intermodulation signals; the function of another interface is to configure the parameters of the passive intermodulation detection circuit (D) through the bus, such as the local oscillator frequency and amplifier gain. The bus includes but not Limited to I2C bus, SPI bus;

数字处理单元(E)与发射信号鉴频电路(E1)之间还设置有一个接口，用于通过总线配置发射信号鉴频电路(E1)的参数，例如本振频率、链路增益，所述总线包括但不限于I2C总线、SPI总线；An interface is also provided between the digital processing unit (E) and the transmitted signal discriminator circuit (E1) for configuring the parameters of the transmitted signal discriminator circuit (E1) via the bus, such as the local oscillator frequency and link gain. Bus includes but is not limited to I2C bus, SPI bus;

所述数字处理单元(E)具备至少一个信息交互接口，其作用包含但不限于程序下载，配置信息输入，远程告警和维护；其中需要输入的配置信息包括本装置发射信号带宽和频段、接收信号带宽和频段、无源互调信号中的主要干扰分量的阶次和频段信息、无源互调信号预设值以及随时间变化的曲线、最大抵消次数；所述数字处理单元(E)可以通过信息交互接口获取发射信号频率信息和接收信号频率信息；所述的信息交互接口还可以与互联网后台资源进行数据交互：上传所述设备运行过程中的无源互调值，无源互调值随时间变化的经验曲线，以及无源互调信号自适应抵消装置中各模块电路的状态信息；或者下载综合优化后的无源互调信号预设值以及随时间变化的曲线。The digital processing unit (E) is provided with at least one information interaction interface, and its functions include but are not limited to program download, configuration information input, remote alarm and maintenance; the configuration information that needs to be input includes the transmission signal bandwidth and frequency band of the device and the received signal Bandwidth and frequency band, the order and frequency band information of the main interference components in the passive intermodulation signal, the preset value of the passive intermodulation signal and the time-varying curve, the maximum number of cancellations; the digital processing unit (E) can pass The information interaction interface obtains the transmitted signal frequency information and the received signal frequency information; the information interaction interface can also perform data interaction with Internet background resources: upload the passive intermodulation value during the operation of the device. A time-varying experience curve, and the status information of each module circuit in the passive intermodulation signal adaptive cancellation device; or download the comprehensively optimized preset value of the passive intermodulation signal and the time-varying curve.
根据权利要求1所述的自适应抵消无源互调信号的装置，其特征在于，所述抵消器电路(B)中的调幅调相器(B1)一端直接连接耦合器(A)的耦合端口，或者通过射频开关(B3)连接耦合器(A)的耦合端口，另一端连接互调信号发生器(B2)。The device for adaptively canceling passive intermodulation signals according to claim 1, wherein one end of the amplitude modulation phase modulator (B1) in the canceller circuit (B) is directly connected to the coupling port of the coupler (A) Or, connect the coupling port of the coupler (A) through the RF switch (B3), and connect the intermodulation signal generator (B2) at the other end.
根据权利要求13所述的自适应抵消无源互调信号的装置，其特征在于，所述调幅调相器(B1)包括调幅电路和调相电路；其中所述调幅电路(1)由可调控衰减器和固定衰减器构成；调相电路(2)至少包含2个可调控移相器；数字处理单元的输出端分别与调幅电路和调相电路的输入端电；所述调幅调相器(B1)的幅度调整范围大于30dB，相位调整范围大于180度；所述抵消器电路(B)中调幅调相器(B1)的承载功率大于等于所述抵消器电路(B)的承载功率门限值，所述调幅调相器(B1)的工作频段包含所述双工器(A0)的发射频段和接收频段，调幅调相器(B1)的频带内增益波动与发射频段、接收频段相关且需在一定的门限值范围内。The device for adaptively canceling passive intermodulation signals according to claim 13, characterized in that the amplitude modulation phase modulator (B1) includes an amplitude modulation circuit and a phase modulation circuit; wherein the amplitude modulation circuit (1) is adjustable The attenuator and fixed attenuator are composed; the phase modulation circuit (2) contains at least two adjustable phase shifters; the output of the digital processing unit is electrically connected to the input terminals of the amplitude modulation circuit and the phase modulation circuit; the amplitude modulation phase modulator ( B1) The amplitude adjustment range is greater than 30dB, and the phase adjustment range is greater than 180 degrees; the carrying power of the amplitude modulator (B1) in the canceler circuit (B) is greater than or equal to the carrying power threshold of the canceler circuit (B) Value, the working frequency band of the AM phase modulator (B1) includes the transmitting frequency band and the receiving frequency band of the duplexer (A0), and the gain fluctuation in the frequency band of the AM phase modulator (B1) is related to the transmitting frequency band and the receiving frequency band and It must be within a certain threshold.
根据权利要求1所述的自适应抵消无源互调信号的装置，其特征在于，所述抵消器电路(B)中的第二调幅电路(3)一端通过第一环行器(4)与耦合器(A)的耦合端口连接，或者可以通过第一环行器(4)、射频开关(B3)与耦合器(A)的耦合端口连接；另一端通过第二环行器(5)与互调信号发生器(B2)连接；所述抵消器电路(B)中的调幅调相器(B1)一端通过第二环行器(5)与互调信号发生器(B2)连接；另一端通过第一环行器(4)与耦合器(A)的耦合端口连接，或者可以通过第一环行器(4)、射频开关(B3)与耦合器(A)的耦合端口连接。The apparatus for adaptively canceling passive intermodulation signals according to claim 1, characterized in that one end of the second amplitude modulation circuit (3) in the canceller circuit (B) is coupled with the first circulator (4) The coupling port of the circulator (A), or can be connected to the coupling port of the coupler (A) through the first circulator (4) and the RF switch (B3); the other end is connected to the intermodulation signal through the second circulator (5) The generator (B2) is connected; one end of the amplitude modulation phase modulator (B1) in the canceler circuit (B) is connected to the intermodulation signal generator (B2) through the second circulator (5); the other end is passed through the first loop The coupler (4) is connected to the coupling port of the coupler (A), or may be connected to the coupling port of the coupler (A) through the first circulator (4) and the radio frequency switch (B3).
根据权利要求15所述的自适应抵消无源互调信号的装置，其特征在于，所述调幅电路(3)使互调信号发生器(B2)承受一个合适功率的射频信号；所述调幅调相器(B1)包含调幅电路(1)和调相电路(2)，将互调信号发生器(B2)产生的互调信号，进行调幅、调相处理，以便与本装置中双工器(A0)及其天线链路产生的无源互调信号进行抵消；所述调幅调相器(B1)包括调幅电路和调相电路；数字处理单元的输出端分别与调幅电路、第二调幅电路和调相电路的输入端电连接；所述调幅电路(1)至少包含1个可调控衰减器；所述调相电路(2)至少包含2个可调控移相器；所述调幅电路(3)由固定衰减器或可调控衰减器构成；所述第一环行器(4)和第二环行器(5)的频率带宽包括所述双工器(A0)的发射频段和接收频段；所述调幅调相器(B1)的幅度调整范围大于30dB，相位调整范围大于180度，所述调幅调相器(B1)的工作频段包含所述双工器(A0)的接收频段，调幅调相器(B1)的频带内增益波动与接收频段相关且需在一定的门限值范围内；所述抵消器电路(B)中调幅电路(3)的承载功率大于等于所述抵消器电路(B)的承载功率门限值；The device for adaptively canceling passive intermodulation signals according to claim 15, characterized in that the amplitude modulation circuit (3) causes the intermodulation signal generator (B2) to withstand a radio frequency signal of appropriate power; the amplitude modulation The phase device (B1) includes an amplitude modulation circuit (1) and a phase modulation circuit (2), and performs the amplitude modulation and phase modulation processing on the intermodulation signal generated by the intermodulation signal generator (B2), so as to communicate with the duplexer in this device ( A0) and the passive intermodulation signal generated by its antenna link to cancel; the amplitude modulation phase modulator (B1) includes an amplitude modulation circuit and a phase modulation circuit; the output terminal of the digital processing unit is respectively connected with the amplitude modulation circuit, the second amplitude modulation circuit and The input terminals of the phase modulation circuit are electrically connected; the amplitude modulation circuit (1) includes at least one adjustable attenuator; the phase modulation circuit (2) includes at least two adjustable phase shifters; the amplitude modulation circuit (3) It consists of a fixed attenuator or a controllable attenuator; the frequency bandwidth of the first circulator (4) and the second circulator (5) includes the transmission frequency band and the reception frequency band of the duplexer (A0); the amplitude modulation The amplitude adjustment range of the phase modulator (B1) is greater than 30dB, and the phase adjustment range is greater than 180 degrees. The working frequency band of the amplitude modulator (B1) includes the receiving frequency band of the duplexer (A0). B1) The gain fluctuation in the frequency band is related to the receiving frequency band and needs to be within a certain threshold; the load carrying power of the amplitude modulation circuit (3) in the canceller circuit (B) is greater than or equal to that of the canceller circuit (B) Carrying power threshold;

所述互调信号发生器(B2)包含但不限于单个二极管、单个三极管或多个二极管的并联构成；二极管具体型号或者三极管具体型号与产生互调信号3阶、5阶或更高阶互调信号的幅值特性和相位特性相关，所述幅值特性和相位特性的需求为权利要求2中对互调信号发生器(B2)的要求；采用多个同型号二极管并联结构时，将增强互调信号强度；互调信号发生器(B2)的承载功率大于等于所述抵消器电路(B)承载功率门限值与从抵消器电路(B)射频输入口到互调信号发生器(B2)的链路损耗的差值。The intermodulation signal generator (B2) includes but is not limited to a single diode, a single transistor or a parallel configuration of multiple diodes; the specific model of the diode or the specific model of the transistor and the intermodulation of the third, fifth or higher order of the intermodulation signal The amplitude characteristics of the signal are related to the phase characteristics. The requirements for the amplitude characteristics and the phase characteristics are the requirements for the intermodulation signal generator (B2) in claim 2. When multiple diodes of the same type are connected in parallel, the mutual Modulated signal strength; the carrier power of the intermodulation signal generator (B2) is greater than or equal to the carrier power threshold of the canceler circuit (B) and from the RF input port of the canceler circuit (B) to the intermodulation signal generator (B2) The difference in link loss.
根据权利要求1所述的自适应抵消无源互调信号的装置，其特征在于，所述无源互调检测电路(D)至少包括低噪声放大器、下变频模块、高速模数转换器；所述无源互调检测电路(D)通过高速模数转换器与所述数字处理单元(E)连接；The device for adaptively canceling passive intermodulation signals according to claim 1, characterized in that the passive intermodulation detection circuit (D) includes at least a low noise amplifier, a down conversion module, and a high-speed analog-to-digital converter; The passive intermodulation detection circuit (D) is connected to the digital processing unit (E) through a high-speed analog-to-digital converter;

下变频模块可以将接收的射频信号转换成中频信号，或者将接收的射频信号转换成零中频信号；The down-conversion module can convert the received radio frequency signal into an intermediate frequency signal, or convert the received radio frequency signal into a zero intermediate frequency signal;

高速模数转换器的采样动态范围需大于接收信号的最大功率值和无源互调预设值对应的功率值之间的差值，The sampling dynamic range of the high-speed analog-to-digital converter must be greater than the difference between the maximum power value of the received signal and the power value corresponding to the preset value of passive intermodulation,

所述无源互调检测电路(D)能够采样的最小功率小于等于预设值对应的无源互调功率值，同时该电路可以根据所接收的射频信号总功率的幅值调整链路增益从而避免接收信号或其他信号造成的链路阻塞；所述无源互调检测电路(D)的增益由需求的无源互调预设值、无源互调检测电路(D)中高速模数转换器的最小采样功率、链路噪声系数等确定；所述无源互调检测电路(D)的接收信号功率的最大值大于等于该装置实际对应的通信标准所规定的最大接收信号功率。The minimum power that the passive intermodulation detection circuit (D) can sample is less than or equal to the passive intermodulation power value corresponding to the preset value, and at the same time, the circuit can adjust the link gain according to the amplitude of the total power of the received RF signal. Avoid link blocking caused by received signals or other signals; the gain of the passive intermodulation detection circuit (D) is set by the required passive intermodulation preset value, and the high-speed analog-to-digital conversion in the passive intermodulation detection circuit (D) The minimum sampling power and link noise coefficient of the device are determined; the maximum value of the received signal power of the passive intermodulation detection circuit (D) is greater than or equal to the maximum received signal power specified by the communication standard corresponding to the device.
根据权利要求1所述的自适应抵消无源互调信号的装置，其特征在于，无源互调检测电路(D)包括依次电连接的低噪声放大器(D1)、射频滤波及小信号放大单元(D2)、混频器(D3)、中频滤波器(D5)、中频放大器(D6)、模数转换器(D7)，本振器(D4)与混频器(D3)电连接；低噪声放大器(D1)的输入端与双工器(A0)的输出端电连接；模数转换器(D7)的输出端与数字处理单元(E)的输入端电连接。The device for adaptively canceling passive intermodulation signals according to claim 1, characterized in that the passive intermodulation detection circuit (D) comprises a low-noise amplifier (D1), radio frequency filtering and small signal amplifying unit which are electrically connected in sequence (D2), mixer (D3), intermediate frequency filter (D5), intermediate frequency amplifier (D6), analog-to-digital converter (D7), local oscillator (D4) and mixer (D3) are electrically connected; low noise The input terminal of the amplifier (D1) is electrically connected to the output terminal of the duplexer (A0); the output terminal of the analog-to-digital converter (D7) is electrically connected to the input terminal of the digital processing unit (E).
根据权利要求1所述的自适应抵消无源互调信号的装置，其特征在于无源互调检测电路(D)包括依次电连接的低噪声放大器(D1)、射频滤波及小信号放大单元(D2)和下变频及模数转换单元(D8)；低噪声放大器(D1)的输入端与双工器(A0)的输出端电连接；下变频及模数转换单元(D8)的输出端与数字处理单元(E)的输入端电连接。The device for adaptively canceling passive intermodulation signals according to claim 1, characterized in that the passive intermodulation detection circuit (D) includes a low-noise amplifier (D1), radio frequency filtering, and small-signal amplification unit that are electrically connected in sequence ( D2) and the down-conversion and analog-to-digital conversion unit (D8); the input terminal of the low-noise amplifier (D1) is electrically connected to the output terminal of the duplexer (A0); the output terminal of the down-conversion and analog-to-digital conversion unit (D8) is The input of the digital processing unit (E) is electrically connected.
一种数字无线收发设备，其特征在于：包括如上述权利要求1-19所述的自适应抵消无源互调信号的装置，所述自适应抵消无源互调信号的装置的双工器(A0)即是无线收发设备的双工器(A0)；所述自适应抵消无源互调信号的装置的无源互调检测电路(D)复用无线收发设备的接收链路的组件或单元，或者在所述无线收发设备内新增无源互调检测电路(D)；所述自适应抵消无源互调信号的装置本装置的发射电路单元(F)复用无线收发设备的发射链路的组件或单元；所述自适应抵消无源互调信号的装置的数字处理单元(E)复用无线收发设备的数字处理单元的组件或单元，或者在所述无线收发设备内新增数字处理单元(E)，所述数字处理单元(E)集成于无线收发设备的整机程序中；所述自适应抵消无源互调信号的装置的耦合器(A)需在所述无线收发设备内新增，且其一个主通路端口和无线收发设备的双工器(A0)天线口连接且距离需控制在0到1米范围内，具体长度由无源互调抵消最佳效果确定，耦合器(A)的耦合端口相对于所述无线收发设备发射信号为正向耦合端口；所述自适应抵消无源互调信号的装置的抵消器电路(B)需在所述无线收发设备内新增，且其射频端口和耦合器(A)的耦合端口直接连接，抵消器电路(B)的幅度调整和相位调整由数字处理单元(E)运算输出的幅度、相位控制参数实现；所述自适应抵消无源互调信号的装置本装置的天馈组件(A2)和天线(A1)即为所述无线收发设备的天线链路上的对应组件和天线；A digital wireless transceiver device, characterized by comprising the device for adaptively canceling passive intermodulation signals according to claims 1-19, and the duplexer of the device for adaptively canceling passive intermodulation signals ( A0) is the duplexer (A0) of the wireless transceiver device; the passive intermodulation detection circuit (D) of the device for adaptively canceling the passive intermodulation signal multiplexes the component or unit of the receiving link of the wireless transceiver device Or, a passive intermodulation detection circuit (D) is newly added to the wireless transceiver equipment; the device for adaptively canceling passive intermodulation signals; the transmission circuit unit (F) of the device multiplexes the transmission chain of the wireless transceiver equipment Components or units of the circuit; the digital processing unit (E) of the device for adaptively canceling the passive intermodulation signal multiplexes the components or units of the digital processing unit of the wireless transceiver device, or adds a new number to the wireless transceiver device Processing unit (E), the digital processing unit (E) is integrated in the whole program of the wireless transceiver device; the coupler (A) of the device for adaptively canceling the passive intermodulation signal needs to be in the wireless transceiver device Newly added, and one of the main access port is connected to the duplexer (A0) antenna port of the wireless transceiver equipment and the distance needs to be controlled within the range of 0 to 1 meter, the specific length is determined by the best effect of passive intermodulation cancellation, coupling The coupling port of the device (A) is a forward coupling port with respect to the transmitted signal of the wireless transceiver device; the canceler circuit (B) of the device for adaptively canceling the passive intermodulation signal needs to be new in the wireless transceiver device And its RF port is directly connected to the coupling port of the coupler (A), the amplitude adjustment and phase adjustment of the canceler circuit (B) are realized by the amplitude and phase control parameters calculated by the digital processing unit (E); Device adapted to cancel passive intermodulation signals The antenna feed component (A2) and antenna (A1) of the device are the corresponding components and antennas on the antenna link of the wireless transceiver device;

当无线收发设备有多个收发链路时，所述每一收发链路中双工器的每个天线口后均紧邻一个耦合器(A)，以及抵消器电路(B)。When the wireless transceiver device has multiple transceiver links, each antenna port of the duplexer in each transceiver link is immediately adjacent to a coupler (A) and a canceller circuit (B).
一种自适应抵消无线收发***中无源互调信号的方法，其特征在于：该方法包括以下步骤，A method for adaptively canceling passive intermodulation signals in a wireless transceiver system, characterized in that the method includes the following steps,

S1：通过数字处理单元(E)获取发射信号带宽和频段、接收信号带宽和频段、无源互调信号中的主要干扰分量的阶次和频段信息、期望的无源互调预设值以及随时间变化的曲线、幅度和相位的初始经验数据、最大抵消次数等信息，并转换成相应的配置参数；S1: Obtain the transmitted signal bandwidth and frequency band, the received signal bandwidth and frequency band, the order and frequency band information of the main interference components in the passive intermodulation signal, the expected passive intermodulation preset value and the random value through the digital processing unit (E) Time-varying curve, initial empirical data of amplitude and phase, maximum offset times and other information, and converted into corresponding configuration parameters;

S2：依据步骤S1中有关发射信号的配置参数，数字处理单元(E)求得无源互调信号的频点并转换成相应数字滤波参数存储入参量配置表中；S2: According to the configuration parameters of the transmitted signal in step S1, the digital processing unit (E) obtains the frequency point of the passive intermodulation signal and converts it into the corresponding digital filtering parameter and stores it in the parameter configuration table;

S3：依据步骤S1中有关接收信号的配置参数、无源互调信号的配置参数以及由步骤S2中获取的无源互调信号的数字滤波参数，数字处理单元(E)对无源互调检测电路(D)的采样信号进行数字滤波，滤除除无源互调信号以外的其他信号分量，求得落入到接收频段的无源互调信号的幅度值；所述求幅度值的算法包括但不限于分段积分法、依据信号带宽的直接积分法；S3: According to the configuration parameters related to the received signal in step S1, the configuration parameters of the passive intermodulation signal and the digital filtering parameters of the passive intermodulation signal obtained in step S2, the digital processing unit (E) detects the passive intermodulation The sampling signal of the circuit (D) is digitally filtered to filter out other signal components except the passive intermodulation signal, and the amplitude value of the passive intermodulation signal falling into the receiving frequency band is obtained; the algorithm for obtaining the amplitude value includes But it is not limited to segmented integration method, direct integration method based on signal bandwidth;

S4：判断当前工作状态；所述工作状态的状态标识默认值是：“初始工作模式”；如果工作状态的状态标识值是“初始工作模式”则继续步骤S5-1，否则继续步骤S5-2；S4: determine the current working state; the default value of the state identification of the working state is: "initial working mode"; if the state identification value of the working state is "initial working mode", continue to step S5-1, otherwise continue to step S5-2 ;

S5-1：将步骤S3获取的无源互调信号幅度值与步骤S1中的无源互调预设值进行对比以判断无源互调信号幅度是否小于等于的无源互调预设值；S5-1: Compare the passive intermodulation signal amplitude value obtained in step S3 with the passive intermodulation preset value in step S1 to determine whether the passive intermodulation signal amplitude is less than or equal to the passive intermodulation preset value;

S6：如果步骤S5-1的判断结果为“是”，则抵消器电路(B)继续保持互调信号发生器与耦合器(A)之间链路高隔离度状态；并返回步骤S2；S6: If the judgment result in step S5-1 is "Yes", the canceller circuit (B) continues to maintain the high isolation state of the link between the intermodulation signal generator and the coupler (A); and returns to step S2;

S7：如果步骤S5-1的判断结果为“否”，则抵消器电路(B)切换到互调信号发生器与耦合器(A)之间链路低隔离度状态；且将工作状态的状态标识值并设置为“抵消工作状态”；继续执行步骤S8；S7: If the judgment result of step S5-1 is "No", the canceller circuit (B) switches to the low isolation state of the link between the intermodulation signal generator and the coupler (A); and the state of the working state Identify the value and set it to "offset working state"; proceed to step S8;

S5-2：将步骤S3获取的无源互调信号幅度值与步骤S1中的无源互调预设值进行对比以判断无源互调信号幅度是否小于等于的无源互调预设值；如果步骤S5-2的判断结果为“是”，则保持状态，并返回步骤S2；如果步骤S5-2的判断结果为“否”，则执行步骤S8；S5-2: Compare the amplitude value of the passive intermodulation signal obtained in step S3 with the preset value of the passive intermodulation signal in step S1 to determine whether the amplitude of the passive intermodulation signal is less than or equal to the preset value of passive intermodulation; If the judgment result of step S5-2 is "Yes", then maintain the state and return to step S2; if the judgment result of step S5-2 is "No", then execute step S8;

S8：依据步骤S3的无源互调信号的幅度值推算抵消器电路的幅度、相位调整值；并配送给抵消器电路中的调幅器、调相器，实施抵消；在完成当前一轮抵消处理后，将继续回到步骤S2继续下一轮的抵消处理；所述求幅度、相位调整值的算法包括但不限于二维最小方差演算法。S8: Calculate the amplitude and phase adjustment values of the canceller circuit according to the amplitude value of the passive intermodulation signal in step S3; and distribute to the amplitude modulator and phase modulator in the canceller circuit to implement cancellation; after completing the current round of cancellation processing After that, it will continue to return to step S2 to continue the next round of cancellation processing; the algorithm for determining the amplitude and phase adjustment values includes but is not limited to a two-dimensional minimum variance algorithm.