WO2018040101A1 - Method and device for locating intermodulation position - Google Patents

Method and device for locating intermodulation position Download PDF

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Publication number
WO2018040101A1
WO2018040101A1 PCT/CN2016/098110 CN2016098110W WO2018040101A1 WO 2018040101 A1 WO2018040101 A1 WO 2018040101A1 CN 2016098110 W CN2016098110 W CN 2016098110W WO 2018040101 A1 WO2018040101 A1 WO 2018040101A1
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intermodulation
coefficient
signal
actual
reverse
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PCT/CN2016/098110
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French (fr)
Chinese (zh)
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谢华治
王政东
高林涛
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华为技术有限公司
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Priority to PCT/CN2016/098110 priority Critical patent/WO2018040101A1/en
Publication of WO2018040101A1 publication Critical patent/WO2018040101A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing

Definitions

  • Embodiments of the present invention relate to the field of communications, and in particular, to a method and apparatus for intermodulation positioning.
  • Intermodulation includes active intermodulation and passive inter-modulation (PIM).
  • the active intermodulation is caused by the nonlinearity of the active device, and the active device may include, for example, a power amplifier.
  • PIM is due to the nonlinearity of passive components.
  • Passive devices may include, for example, antenna arrays, filters, and the like. If the active intermodulation products or passive intermodulation products fall within the working bandwidth of the communication system, it will cause interference to the system and reduce the performance of the communication system.
  • intermodulation positioning In order to reduce the impact of intermodulation products on the system, some intermodulation suppression schemes are proposed, but these schemes do not take into account the location of the intermodulation occurrence position, hereinafter referred to as intermodulation positioning.
  • the embodiments of the present invention provide a method and apparatus for intermodulation positioning, in order to solve the problem of intermodulation positioning.
  • an intermodulation positioning method including:
  • the intermodulation positioning device respectively obtains a first forward intermodulation signal and a first reverse intermodulation signal of the device to be tested, wherein the first forward intermodulation signal and the first reverse intermodulation signal are in the same order
  • the intermodulation device stores the mapping relationship between the intermodulation position and the intermodulation coefficient, wherein the intermodulation coefficient is a relationship coefficient between the same-order forward intermodulation signal and the reverse intermodulation signal.
  • the intermodulation positioning device determines an actual intermodulation coefficient according to the first forward intermodulation signal and the first reverse intermodulation signal.
  • the intermodulation positioning device determines an intermodulation position corresponding to the actual intermodulation coefficient according to the mapping relationship, as a position where intermodulation occurs.
  • an apparatus for intermodulation positioning comprising means or means for performing the various steps of the above first aspect.
  • an apparatus for intermodulation positioning including an intermodulation signal acquisition component, a memory, and a processor, wherein the memory is configured to store a mapping relationship between the intermodulation position and the intermodulation coefficient, wherein the intermodulation coefficient is the same order The coefficient of relationship between the intermodulation signal and the reverse intermodulation signal.
  • the intermodulation signal acquisition component is configured to obtain a first forward intermodulation signal and a first reverse intermodulation signal of the device to be tested, where the first forward intermodulation signal and the first reverse intermodulation signal are in the same order Adjust the product.
  • the processor is configured to determine an actual intermodulation coefficient according to the first forward intermodulation signal and the first reverse intermodulation signal, and determine an intermodulation position corresponding to the actual intermodulation coefficient according to a mapping relationship stored in the memory, as a position where the intermodulation occurs.
  • a program for performing the method of the above first aspect when executed by a processor.
  • a program product such as a computer readable storage medium, comprising the program of the fourth aspect is provided.
  • the intermodulation can be effectively positioned, and more effective measures can be taken according to the positioning result to reduce the intermodulation effect.
  • the mapping relationship may be stored in the form of a list in the intermodulation positioning device, for example, in the intermodulation positioning device memory.
  • the mapping relationship may be a mapping relationship between the intermodulation coefficient range and the intermodulation position, or may be a mapping relationship between the intermodulation coefficient value and the intermodulation position.
  • the mapping relationship includes a mapping list that reflects the range of intermodulation coefficients and intermodulation locations.
  • determining, by the intermodulation and positioning device, the intermodulation position corresponding to the actual intermodulation coefficient according to the mapping relationship may include: determining that the actual intermodulation coefficient falls in the first mutual in the mapping list. Adjusting the coefficient range; determining, according to the mapping list, the first intermodulation position to which the first intermodulation coefficient range is mapped, as the intermodulation position corresponding to the actual intermodulation coefficient.
  • the mapping relationship includes a mapping list that reflects a mapping relationship between the intermodulation coefficient value and the intermodulation position.
  • the intermodulation positioning device determines the intermodulation position corresponding to the actual intermodulation coefficient according to the mapping relationship, and may include: finding a first intermodulation coefficient in the mapping list, where an absolute difference between the actual intermodulation coefficient and the first intermodulation coefficient is The value is less than or equal to the preset value; according to the mapping list, the first intermodulation position to which the first intermodulation coefficient is mapped is determined as the intermodulation position corresponding to the actual intermodulation coefficient.
  • the same-order forward intermodulation signal and the reverse intermodulation signal have the following relationship
  • the intermodulation positioning device determines the actual intermodulation coefficient according to the following relationship:
  • the position corresponding to the modulation coefficient M is used as the position at which the intermodulation occurs, thereby realizing the intermodulation positioning.
  • FIG. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an intermodulation effect according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of an intermodulation positioning method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an intermodulation positioning device 400 according to an embodiment of the present invention.
  • FIG. 5 is a structural diagram of an intermodulation and positioning device 500 according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a method for determining an intermodulation position corresponding to an actual intermodulation coefficient according to an embodiment of the present invention
  • FIG. 7 is a flowchart of another method for determining an intermodulation position corresponding to an actual intermodulation coefficient according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an intermodulation device according to an embodiment of the present invention.
  • Multiple means two or more. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/" generally indicates that the contextual object is an "or" relationship.
  • Forward intermodulation signal An intermodulation signal that propagates in the same direction as the carrier signal fed to the component under test.
  • Reverse intermodulation signal An intermodulation signal that is propagating back to the carrier signal fed to the component under test.
  • the forward intermodulation signal is the intermodulation signal transmitted in the same direction as the reference direction
  • the reverse intermodulation signal is the intermodulation signal transmitted opposite to the reference direction. number. That is, the forward intermodulation signal is an intermodulation signal propagating along the propagation direction of the carrier signal, and the reverse intermodulation signal is an intermodulation signal propagating toward the feed end of the carrier signal.
  • Intermodulation coefficient It is the relationship coefficient between the same-order forward intermodulation signal and the reverse intermodulation signal.
  • FIG. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present invention.
  • the communication system includes a baseband component 110, a radio frequency component 120, and an antenna 150.
  • the baseband component 110 is configured to implement baseband processing, and transmit the processed baseband signal to the radio frequency component 120 to implement medium radio frequency processing or radio frequency processing.
  • the processed RF signal is transmitted to antenna 150 via jumper 130 and feeder 140 for transmission.
  • the jumper 130, the feeder 140 and the antenna 150 form an antenna feeder system, which is merely an example and is not intended to limit the composition of the antenna feeder system.
  • the radio frequency component 120 includes active devices and passive components, and the antenna 150 is a passive device whose nonlinearity causes an intermodulation effect.
  • the intermodulation effect produces a new frequency component, as shown in Figure 2 for the intermodulation effect diagram, two single frequency signals TX1 and TX2, the frequencies being f 1 and f 2 , respectively. These two signals are input into the nonlinear system.
  • the intermodulation effect makes the output signal of the system include not only the signals of frequencies f 1 and f 2 but also the signals of new frequency components, such as 2*f 1 -f 2 signals.
  • 2*f 2 -f 1 signal 3*f 1 –2*f 2 signal, 3*f 2 -2*f 1 signal, 4*f 1 –3*f 2 signal, 4*f 2 -3*f 1 signal and so on.
  • the 2*f 1 -f 2 signal and the 2*f 2 -f 1 signal are third-order intermodulation products IM3, the 3*f 1 -2*f 2 signals and the 3*f 2 -2*f 1 signals are fifth-order
  • the intermodulation products IM5, 4*f 1 -3*f 2 signals and 4*f 2 -3*f 1 signals are the seventh-order intermodulation products IM7.
  • the order of m*f 2 -n*f 1 intermodulation products is m+n, where m and n are both positive integers.
  • the concept of the order of the intermodulation products is well known to those skilled in the art and will not be explained too much herein. In general, the higher the order, the smaller the amplitude of the intermodulation product.
  • Intermodulation products fall within the operating bandwidth of the communication system and can interfere with useful signals within the system. If the position of the intermodulation can be located, more effective measures can be taken according to the positioning result to reduce the intermodulation effect.
  • the embodiment of the present invention finds that there is a certain coefficient relationship between the intermodulation signals in the positive and negative directions of the same order, and the coefficient is the intermodulation coefficient, and the coefficient occurs with the intermodulation position (hereinafter referred to as the intermodulation position).
  • the change is different, so the mapping relationship between the intermodulation coefficient and the intermodulation position pre-stored in the intermodulation positioning device in the embodiment of the present invention is measured, and the intermodulation signals in the forward and reverse directions are measured by the intermodulation positioning device to determine the actual The intermodulation coefficient, and then the position of the intermodulation occurs according to the actual intermodulation coefficient and the stored mapping relationship.
  • the method can locate the intermodulation to take more effective measures to reduce the intermodulation effect according to the positioning result.
  • FIG. 3 is a flowchart of an intermodulation positioning method according to an embodiment of the present invention.
  • the method is performed by an intermodulation positioning device, where the mapping relationship between the intermodulation position and the intermodulation coefficient is stored. .
  • the method includes the following steps:
  • the intermodulation positioning device acquires a positive intermodulation signal and a reverse intermodulation signal of the device to be tested.
  • the forward intermodulation signal and the reverse intermodulation signal are the same-order intermodulation products.
  • the intermodulation positioning device determines an actual intermodulation coefficient according to the obtained forward intermodulation signal and reverse intermodulation signal.
  • the intermodulation positioning device determines, according to the stored mapping relationship, an intermodulation position corresponding to the actual intermodulation coefficient, as a position where the intermodulation occurs.
  • the intermodulation positioning device can locate the position where the intermodulation effect of the component to be tested occurs, thereby achieving the effect of intermodulation positioning, and then taking more effective measures to reduce the intermodulation effect according to the positioning result.
  • the implementation of the above method can be implemented by the intermodulation positioning device of FIG. 4 as follows.
  • the device to be tested is exemplified by an array antenna.
  • Intermodulation uses PIM as an example.
  • the positioning device 400 can include a PIM detecting component 410, a PIM signal receiving component 420, a carrier test signal generating component 430, and a PIM fault location analyzing component 440.
  • the carrier test signal generating component 430 generates a carrier signal and inputs the carrier signal to the measured port of the antenna under test. Due to the passive nonlinearity of the antenna, a forward and reverse PIM signal is generated.
  • the PIM signal is output from the antenna port, the forward PIM signal is detected by the PIM detecting component 410, the two PIM signal synchronizations are decoupled and received by the PIM signal receiving component 420, and the received PIM signal is performed by the PIM fault location analyzing component 440 by the above method. Analysis, positioning the location where the intermodulation occurs.
  • the PIM detecting component 410 can be implemented by, for example, a probe, including but not limited to a probe, a probe ring, a half-wave oscillator, a horn antenna, and the like.
  • the detecting element 410 is movable to detect different positions of the array antenna to be tested.
  • the same intermodulation positioning device may include a detecting component that acquires a positive intermodulation signal at different positions by moving the detecting component; the same intermodulation positioning device may also include multiple detecting components, and different detecting components may acquire Positive intermodulation signals at different locations.
  • the intermodulation positioning device shown in FIG. 4 exemplifies a detection element 410.
  • the PIM signal receiving component 420 includes, but is not limited to, a spectrum analyzer, a network segment, a power meter, etc., for receiving forward and reverse intermodulation signals of the device under test.
  • the PIM signal receiving component 420 can also include a decoupler, including but not limited to a duplexer, a filter, etc., to achieve decoupling separation of the carrier and PIM mixed signals.
  • the carrier test signal generating component 430 is configured to provide a carrier test signal, such as a signal generator, a signal source, and the like.
  • the PIM fault location analysis component 440 can be implemented by a processor, which can be a chip integrated with storage and processing components, the processing components in the chip invoking the code in the storage component performing the steps in the above method to occur for intermodulation
  • the location may be located, or the processor may be an Application Specific Integrated Circuit (ASIC), a digital singnal processor (DSP), or a Field Programmable Gate Array (FPGA).
  • ASIC Application Specific Integrated Circuit
  • DSP digital singnal processor
  • FPGA Field Programmable Gate Array
  • the above PIM detecting component 410 and PIM signal receiving component 420 may be used together as the PIM signal acquiring component of the intermodulation positioning device 400.
  • the carrier test signal generating component 430 may be located in the intermodulation positioning device 400 as part of the device; or may be located outside the intermodulation positioning device 400 to separately provide carrier signal transmission for the device under test. In, or a signal generator embedded in other components.
  • FIG. 5 is a schematic structural diagram of an intermodulation positioning apparatus 500 according to an embodiment of the present invention.
  • the intermodulation positioning device includes an intermodulation signal acquisition component 510, a memory 520, and a processor 530.
  • the memory 520 is configured to store a mapping relationship between the intermodulation position and the intermodulation coefficient;
  • the intermodulation signal acquisition component 510 is configured to acquire a forward intermodulation signal and a reverse intermodulation signal, and the processor 530 is configured to use the forward intermodulation signal according to the forward intermodulation signal.
  • the reverse intermodulation signal determines the actual intermodulation coefficient, and determines the intermodulation position corresponding to the actual intermodulation coefficient according to the mapping relationship stored by the memory 520, as the position where the intermodulation occurs.
  • the intermodulation signal acquisition component 510 can include a probe 511 for detecting a forward intermodulation signal, and a receiving portion 512 coupled to the probe 511 and the device under test to receive the probe 511. The forward intermodulation signal and the reverse intermodulation signal output by the device under test.
  • the intermodulation positioning device 500 may further include a signal generator 540 for providing a carrier test signal to the component to be tested.
  • the reverse intermodulation signal and the forward intermodulation signal may have the following relationship
  • the intermodulation positioning device determines the actual intermodulation coefficient according to the following relationship:
  • the mapping relationship between the intermodulation coefficient and the intermodulation position can be represented by a mapping list, that is, the mapping list that reflects the mapping relationship between the intermodulation coefficient and the intermodulation position is stored in the above intermodulation positioning device.
  • the mapping list may be a mapping list that reflects the mapping relationship between the intermodulation coefficient range and the intermodulation position, as shown in Table 1; or a mapping list that reflects the mapping relationship between the intermodulation coefficient value and the intermodulation position, as shown in Table 2. Show.
  • Intermodulation coefficient range number Intermodulation coefficient range Intermodulation position 1 K0 to K1 L1 2 K2 to K3 L2 3 K4 to K5 L3
  • the intermodulation positioning device performs three tests on the intermodulation effects of the three positions respectively. Obtaining a first intermodulation coefficient k1, a second intermodulation coefficient k2, and a third intermodulation coefficient k3, respectively.
  • the first intermodulation coefficient k1 corresponds to the first intermodulation position L1
  • the second intermodulation coefficient k2 corresponds to the second intermodulation position L2
  • the third intermodulation coefficient k3 corresponds to the third intermodulation position L3, as shown in Table 2 Shown is a mapping list of intermodulation coefficient values and intermodulation positions.
  • a mapping relationship between the intermodulation coefficient range and the intermodulation position may also be established.
  • Each intermodulation position is tested separately to obtain the intermodulation coefficient value corresponding to each position, and then each intermodulation coefficient value is subtracted by a preset value, and each intermodulation coefficient value is added with a preset value.
  • perform multiple tests for each position taking the minimum and maximum values of the intermodulation coefficients in multiple tests as the boundary value of the intermodulation coefficient range corresponding to the position; or subtracting the minimum value from a preset value, which will be the largest
  • the value is added to a preset value as the boundary value of the range of intermodulation coefficients corresponding to the position.
  • the subtracted preset value and the added preset value may be the same or different.
  • the preset values obtained by subtracting or adding different intermodulation coefficient values may be the same or different.
  • K0 to K1 are the first intermodulation coefficient range, and the first intermodulation coefficient range is mapped to the first intermodulation position L1.
  • K2 to K3 are the second intermodulation coefficient range, and the second intermodulation coefficient range is mapped to the second intermodulation position L2.
  • K4 to K5 are the third intermodulation coefficient range, and the third intermodulation system The number range is mapped to the third intermodulation position L3.
  • Table 1 a list of mapping relationships between intermodulation coefficient ranges and intermodulation positions is shown.
  • K0, K1, K2, K3, K4, K5 are the boundary values of each intermodulation coefficient range, K0 ⁇ K1 ⁇ K2 ⁇ K3 ⁇ K4 ⁇ K5.
  • the size of the intermodulation coefficient range determines the positioning accuracy of the device, and the range of the intermodulation coefficient may be uniform or non-uniform, that is, when the second intermodulation coefficient range is K3-K2, K3- K2 may be equal to or not equal to K1-K0, where K1 may be equal to or not equal to K2.
  • mapping list in Table 1 and Table 2 is only tested for three sample positions.
  • the sample may be multiple.
  • the number of samples and the number of positions of the sample to be tested are limited.
  • Tables 1 and 2 are only examples, and the style of the map list is not limited here.
  • the above process of determining the intermodulation position corresponding to the actual intermodulation coefficient may include the steps shown in FIG. 6:
  • the intermodulation positioning device determines a first intermodulation coefficient range in which the actual intermodulation coefficient falls in the mapping list. For example, it is determined that the actual intermodulation coefficient falls within the first intermodulation coefficient range K0 to K1 of Table 1 above.
  • the intermodulation positioning device determines, according to the mapping list, a first intermodulation position to which the first intermodulation coefficient range is mapped, as an intermodulation position corresponding to the actual intermodulation coefficient. For example, please continue to refer to Table 1.
  • the first intermodulation coefficient range corresponding to the actual intermodulation coefficient is mapped to the first intermodulation position L1, and then the first intermodulation position L1 is determined as the position where the intermodulation occurs.
  • the above process of determining the intermodulation position corresponding to the actual intermodulation coefficient may include the steps shown in FIG. 7:
  • the intermodulation positioning device compares the actual intermodulation coefficient with the first intermodulation coefficient in the intermodulation list The value is made poor and the difference is taken as an absolute value. If the absolute value is less than or equal to the preset value, the actual intermodulation coefficient corresponds to the first intermodulation coefficient value. For example, it is determined that the absolute value of the difference between the actual intermodulation coefficient and the first intermodulation coefficient value k1 in Table 2 is less than a preset value, indicating that the actual intermodulation coefficient corresponds to the first intermodulation coefficient value k1.
  • the intermodulation positioning device determines, according to the mapping list, that the first intermodulation coefficient is mapped to the first intermodulation position, and is used as an intermodulation position corresponding to the actual intermodulation coefficient. For example, referring to Table 2, the first intermodulation coefficient value k1 corresponding to the actual intermodulation coefficient is mapped to the first intermodulation position L1, and then the first intermodulation position L1 is determined as the position where the intermodulation occurs.
  • the above table is pre-established and stored in the intermodulation positioning device, wherein the intermodulation position in the table may be the actual test or the simulation experiment.
  • the position where the intermodulation of the device to be tested occurs can be effectively located.
  • the above embodiment takes an intermodulation coefficient range or an intermodulation coefficient value corresponding to an intermodulation position as an example.
  • the device to be tested has multiple branches or multiple output ends, multiple intermodulation coefficient ranges or A plurality of intermodulation coefficient values correspond to an intermodulation position.
  • FIG. 8 is a schematic diagram of an intermodulation positioning device according to an embodiment of the present invention.
  • the intermodulation positioning device 800 tests the array antenna 810 to be tested.
  • the component to be tested is an array antenna and is a passive device. Therefore, the intermodulation type in this embodiment is a passive intermodulation PIM.
  • the feed network of the array antenna 810 includes a main feed and two branches, a main feed 811, a first branch 812 and a second branch 813.
  • each mutual The adjustment position corresponds to two intermodulation coefficient values.
  • the mapping list 820 stored in the memory 840 shown in FIG. 8 has a mapping relationship in the mapping list.
  • Table 3 the intermodulation coefficient value k11 on the first branch 812 and the second branch 813.
  • the intermodulation coefficient value k12 corresponds to the first intermodulation position L1.
  • the intermodulation coefficient value k21 on the first leg 812 and the intermodulation coefficient value k22 on the second leg 813 correspond to the second intermodulation position L2.
  • the intermodulation coefficient value k31 on the first leg 812 and the intermodulation coefficient value k32 on the second leg 813 correspond to the third intermodulation position L3.
  • the signal generator 850 inputs two signals of different frequencies at the main feed 811.
  • the probe 801 and the probe 802 respectively obtain the forward intermodulation signals on the first branch 812 and the second branch 813, and the receiving component 803 also acquires the reverse intermodulation signals of the first branch and the second branch, where
  • the reverse intermodulation signal is a reverse intermodulation signal in which two branches reverse intermodulation signals are superimposed.
  • the actual intermodulation coefficients of the first branch 812 and the second branch 813 are respectively N1 and N2, and the intermodulation positioning device maps the first branch in the mapping list with N1 and N2.
  • the intermodulation coefficients of 812 and the second branch 813 are respectively poor, and the absolute values are respectively taken.
  • the intermodulation effect PIM to be tested occurs.
  • the intermodulation signal acquisition component 830 in the above embodiment includes the probe 801, the probe 802, and the receiving component 803 described above.
  • the signal generating device 850 may exist separately from the intermodulation positioning device 800 or be embedded in the signal source module of other devices.
  • the position where the intermodulation effect of the feed network of the array antenna 810 to be tested occurs can be effectively located.
  • the intermodulation positioning device if the intermodulation positioning device receives the signal less than the system noise floor or approaches the system noise floor, the intermodulation positioning device automatically deletes the signal.
  • the intermodulation positioning device can recognize and automatically delete the signal to save the processing time of the intermodulation positioning device, so as to improve the processing capability of the intermodulation positioning device.
  • mapping relationship may be an intermodulation coefficient value corresponding to an intermodulation effect occurrence position, or an intermodulation coefficient range corresponding to an intermodulation effect occurrence position.
  • the mapping relationship may also be that a plurality of intermodulation coefficient values correspond to an intermodulation effect occurrence position, or a plurality of intermodulation coefficient ranges correspond to an intermodulation effect occurrence position, where the number of intermodulation coefficients/intermodulation coefficient ranges is not used here. Make specific restrictions.

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Abstract

The invention relates to the field of communications. Provided are a method and device for locating an intermodulation position capable of locating a position where intermodulation occurs. The device for locating an intermodulation position stores a mapping relationship between an intermodulation position and an intermodulation coefficient. The intermodulation coefficient is a relationship coefficient between a forward intermodulation signal and a reverse intermodulation signal of the same order. The device for locating an intermodulation position respectively acquires, from a test element, a first forward intermodulation signal and a first reverse intermodulation signal, determines the actual intermodulation coefficient according to the first forward intermodulation signal and the first reverse intermodulation signal, and determines, according to the stored mapping relationship, an intermodulation position corresponding to the actual intermodulation coefficient to be a position where intermodulation occurs.

Description

互调定位的方法和装置Method and device for intermodulation positioning 技术领域Technical field
本发明实施例涉及通信领域，尤其涉及互调定位的方法和装置。Embodiments of the present invention relate to the field of communications, and in particular, to a method and apparatus for intermodulation positioning.
背景技术Background technique
在通信***中，由于***存在非线性而引起的互调(Inter-Modulation，IM)效应会产生互调产物(以下简称互调)，即产生新的频率信号。互调包括有源互调和无源互调(Passive Inter-Modulation，PIM)。其中，有源互调是由于有源器件的非线性引起的，有源器件例如可以包括功率放大器。PIM是由于无源器件的非线性引起的。无源器件例如可以包括天线阵列，滤波器等。若有源互调产物或者无源互调产物落在通信***的工作带宽内，会对***造成干扰，降低通信***的性能。In the communication system, the Inter-Modulation (IM) effect due to the nonlinearity of the system generates an intermodulation product (hereinafter referred to as intermodulation), that is, a new frequency signal is generated. Intermodulation includes active intermodulation and passive inter-modulation (PIM). Among them, the active intermodulation is caused by the nonlinearity of the active device, and the active device may include, for example, a power amplifier. PIM is due to the nonlinearity of passive components. Passive devices may include, for example, antenna arrays, filters, and the like. If the active intermodulation products or passive intermodulation products fall within the working bandwidth of the communication system, it will cause interference to the system and reduce the performance of the communication system.
目前，为了减少互调产物对***的影响，提出了一些互调抑制方案，但这些方案都没有考虑到对互调发生位置的定位，以下称为互调定位。At present, in order to reduce the impact of intermodulation products on the system, some intermodulation suppression schemes are proposed, but these schemes do not take into account the location of the intermodulation occurrence position, hereinafter referred to as intermodulation positioning.
发明内容Summary of the invention
有鉴于此，本发明实施例提供了互调定位的方法和装置，以期解决互调定位的问题。In view of this, the embodiments of the present invention provide a method and apparatus for intermodulation positioning, in order to solve the problem of intermodulation positioning.
第一方面，提供了一种互调定位方法，包括：In a first aspect, an intermodulation positioning method is provided, including:
互调定位装置分别获取待测元件的第一正向互调信号和第一反向互调信号，其中，所述第一正向互调信号与所述第一反向互调信号为同阶互调产物，所述互调定位装置存储有互调位置和互调系数的映射关系，其中，所述互调系数是同阶正向互调信号与反向互调信号的关系系数。The intermodulation positioning device respectively obtains a first forward intermodulation signal and a first reverse intermodulation signal of the device to be tested, wherein the first forward intermodulation signal and the first reverse intermodulation signal are in the same order The intermodulation device stores the mapping relationship between the intermodulation position and the intermodulation coefficient, wherein the intermodulation coefficient is a relationship coefficient between the same-order forward intermodulation signal and the reverse intermodulation signal.
所述互调定位装置根据所述第一正向互调信号和所述第一反向互调信号确定实际互调系数。 The intermodulation positioning device determines an actual intermodulation coefficient according to the first forward intermodulation signal and the first reverse intermodulation signal.
所述互调定位装置根据所述映射关系，确定所述实际互调系数对应的互调位置，作为互调发生的位置。The intermodulation positioning device determines an intermodulation position corresponding to the actual intermodulation coefficient according to the mapping relationship, as a position where intermodulation occurs.
第二方面，提供了一种互调定位的装置，包括用于执行以上第一方面各个步骤的单元或者手段(means)。In a second aspect, an apparatus for intermodulation positioning is provided, comprising means or means for performing the various steps of the above first aspect.
第三方面，提供了一种互调定位的装置，包括互调信号获取元件、存储器和处理器，存储器用于存储互调位置和互调系数的映射关系，其中，互调系数是同阶正向互调信号与反向互调信号的关系系数。互调信号获取元件，用于获取待测元件的第一正向互调信号和第一反向互调信号，其中，第一正向互调信号与第一反向互调信号为同阶互调产物。处理器用于根据第一正向互调信号和第一反向互调信号确定实际互调系数，且根据存储器存储的映射关系确定实际互调系数对应的互调位置，作为互调发生的位置。In a third aspect, an apparatus for intermodulation positioning is provided, including an intermodulation signal acquisition component, a memory, and a processor, wherein the memory is configured to store a mapping relationship between the intermodulation position and the intermodulation coefficient, wherein the intermodulation coefficient is the same order The coefficient of relationship between the intermodulation signal and the reverse intermodulation signal. The intermodulation signal acquisition component is configured to obtain a first forward intermodulation signal and a first reverse intermodulation signal of the device to be tested, where the first forward intermodulation signal and the first reverse intermodulation signal are in the same order Adjust the product. The processor is configured to determine an actual intermodulation coefficient according to the first forward intermodulation signal and the first reverse intermodulation signal, and determine an intermodulation position corresponding to the actual intermodulation coefficient according to a mapping relationship stored in the memory, as a position where the intermodulation occurs.
第四方面，提供一种程序，该程序在被处理器执行时用于执行以上第一方面的方法。In a fourth aspect, a program is provided for performing the method of the above first aspect when executed by a processor.
第五方面，提供了一种程序产品，例如计算机可读存储介质，包括第四方面的程序。In a fifth aspect, a program product, such as a computer readable storage medium, comprising the program of the fourth aspect is provided.
可见，在以上各个方面，可以对互调有效的进行定位，便可以根据定位结果采取更有效的措施降低互调效应。It can be seen that in the above aspects, the intermodulation can be effectively positioned, and more effective measures can be taken according to the positioning result to reduce the intermodulation effect.
在以上各个方面中，映射关系可以以列表的形式存储于互调定位装置中，例如存储于互调定位装置存储器中。此外，映射关系可以为互调系数范围与互调位置的映射关系，也可以为互调系数值与互调位置的映射关系。In the above aspects, the mapping relationship may be stored in the form of a list in the intermodulation positioning device, for example, in the intermodulation positioning device memory. In addition, the mapping relationship may be a mapping relationship between the intermodulation coefficient range and the intermodulation position, or may be a mapping relationship between the intermodulation coefficient value and the intermodulation position.
例如，在一种实现方式中，映射关系包括体现互调系数范围与互调位置的映射列表。此时，互调定位装置根据映射关系确定实际互调系数对应的互调位置可以包括：确定实际互调系数落在映射列表中的第一互 调系数范围；根据映射列表，确定所述第一互调系数范围映射到的第一互调位置，作为实际互调系数对应的互调位置。For example, in one implementation, the mapping relationship includes a mapping list that reflects the range of intermodulation coefficients and intermodulation locations. At this time, determining, by the intermodulation and positioning device, the intermodulation position corresponding to the actual intermodulation coefficient according to the mapping relationship may include: determining that the actual intermodulation coefficient falls in the first mutual in the mapping list. Adjusting the coefficient range; determining, according to the mapping list, the first intermodulation position to which the first intermodulation coefficient range is mapped, as the intermodulation position corresponding to the actual intermodulation coefficient.
再如，在另一种实现方式中，映射关系包括体现互调系数值与互调位置的映射关系的映射列表。此时，互调定位装置根据映射关系确定实际互调系数对应的互调位置可以包括：在映射列表中找到第一互调系数，其中，实际互调系数与第一互调系数之差的绝对值小于或等于预设值；根据映射列表，确定第一互调系数映射到的第一互调位置，作为实际互调系数对应的互调位置。For another example, in another implementation manner, the mapping relationship includes a mapping list that reflects a mapping relationship between the intermodulation coefficient value and the intermodulation position. At this time, the intermodulation positioning device determines the intermodulation position corresponding to the actual intermodulation coefficient according to the mapping relationship, and may include: finding a first intermodulation coefficient in the mapping list, where an absolute difference between the actual intermodulation coefficient and the first intermodulation coefficient is The value is less than or equal to the preset value; according to the mapping list, the first intermodulation position to which the first intermodulation coefficient is mapped is determined as the intermodulation position corresponding to the actual intermodulation coefficient.
在以上各个方面中，同阶正向互调信号和反向互调信号存在如下关系，且互调定位装置根据如下关系确定实际互调系数：In the above aspects, the same-order forward intermodulation signal and the reverse intermodulation signal have the following relationship, and the intermodulation positioning device determines the actual intermodulation coefficient according to the following relationship:
线性关系：反向互调信号＝M*正向互调信号，其中M为互调系数；或者，Linear relationship: reverse intermodulation signal = M * positive intermodulation signal, where M is the intermodulation coefficient; or,
对数关系：反向互调信号(dB)＝M(dB)+正向互调信号(dB)，其中M为互调系数。Logarithmic relationship: reverse intermodulation signal (dB) = M (dB) + positive intermodulation signal (dB), where M is the intermodulation coefficient.
此时，对于产生互调的元件，互调定位装置分别获取该元件的正向互调信号和反向互调信号，并根据反向互调信号＝M*正向互调信号，或者反向互调信号(dB)＝M(dB)+正向互调信号(dB)，其中M为互调系数，计算得到互调系数M，并根据互调定位装置内的映射关系或者映射列表确定互调系数M对应的位置，作为互调发生的位置，从而实现了互调定位。At this time, for the component that generates the intermodulation, the intermodulation positioning device respectively obtains the positive intermodulation signal and the reverse intermodulation signal of the component, and according to the reverse intermodulation signal=M* positive intermodulation signal, or reverse Intermodulation signal (dB)=M(dB)+positive intermodulation signal (dB), where M is the intermodulation coefficient, the intermodulation coefficient M is calculated, and the mutual mapping is determined according to the mapping relationship or mapping list in the intermodulation positioning device. The position corresponding to the modulation coefficient M is used as the position at which the intermodulation occurs, thereby realizing the intermodulation positioning.
附图说明DRAWINGS
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出 创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, Other drawings can also be obtained from these drawings on the premise of creative labor.
图1为本发明实施例提供的一种无线通信***的示意图；FIG. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present invention;
图2为本发明实施例提供的一种互调效应的示意图；2 is a schematic diagram of an intermodulation effect according to an embodiment of the present invention;
图3为本发明实施例提供的一种互调定位方法的流程图；FIG. 3 is a flowchart of an intermodulation positioning method according to an embodiment of the present invention;
图4为本发明实施例提供的一种互调定位装置400的示意图；FIG. 4 is a schematic diagram of an intermodulation positioning device 400 according to an embodiment of the present invention;
图5为本发明实施例提供的一种互调定位装置500的结构图；FIG. 5 is a structural diagram of an intermodulation and positioning device 500 according to an embodiment of the present invention;
图6为本发明实施例提供的一种确定实际互调系数对应的互调位置的方法的流程图；FIG. 6 is a flowchart of a method for determining an intermodulation position corresponding to an actual intermodulation coefficient according to an embodiment of the present invention;
图7为本发明实施例提供的另一种确定实际互调系数对应的互调位置的方法的流程图；FIG. 7 is a flowchart of another method for determining an intermodulation position corresponding to an actual intermodulation coefficient according to an embodiment of the present invention;
图8为本发明实施例提供的一种互调定装置的示意图。FIG. 8 is a schematic diagram of an intermodulation device according to an embodiment of the present invention.
具体实施方式detailed description
下面将结合附图，对本申请实施例中的技术方案进行清楚地描述，显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的其它实施例，都属于本申请保护的范围。The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts are within the scope of the present application.
“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。"Multiple" means two or more. "and/or", describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately. The character "/" generally indicates that the contextual object is an "or" relationship.
正向互调信号：与馈入待测元件的载波信号同向传播的互调信号。Forward intermodulation signal: An intermodulation signal that propagates in the same direction as the carrier signal fed to the component under test.
反向互调信号：与馈入待测元件的载波信号反向传播的互调信号。Reverse intermodulation signal: An intermodulation signal that is propagating back to the carrier signal fed to the component under test.
即，以信号源向待测元件入射方向为参考基准，正向互调信号即为与基准方向同向传输的互调信号，反向互调信号为与基准方向相反传输的互调信 号。亦即，正向互调信号为顺着载波信号传播方向而传播的互调信号，反向互调信号为朝向载波信号馈入端传播的互调信号。That is, the direction of incidence of the signal source to the device under test is taken as the reference, and the forward intermodulation signal is the intermodulation signal transmitted in the same direction as the reference direction, and the reverse intermodulation signal is the intermodulation signal transmitted opposite to the reference direction. number. That is, the forward intermodulation signal is an intermodulation signal propagating along the propagation direction of the carrier signal, and the reverse intermodulation signal is an intermodulation signal propagating toward the feed end of the carrier signal.
互调系数：是同阶正向互调信号与反向互调信号的关系系数。Intermodulation coefficient: It is the relationship coefficient between the same-order forward intermodulation signal and the reverse intermodulation signal.
以上，对本发明中的用语进行解释说明，以便于本领域技术人员理解。The terms used in the present invention have been explained above so as to be understood by those skilled in the art.
下面以常见的无线通信***为例描述互调的产生。请参考图1，其为本发明实施例提供的一种无线通信***的示意图。如图1所示，该通信***包括基带部件110、射频部件120以及天线150。其中基带部件110用于实现基带处理，将处理完的基带信号传输给射频部件120，以实现中射频处理或者射频处理。经处理后的射频信号通过跳线130和馈线140传输到天线150进行发射。其中跳线130、馈线140和天线150组成天馈***，此处仅为举例，并非用于限制天馈***的组成。射频部件120包括有源器件和无源器件，以及天线150为无源器件，这些器件的非线性会引起互调效应。所述的互调效应会产生新的频率成分，如图2所示为互调效应示意图，两个单一频率信号TX1和TX2，频率分别为f1和f2。这两个信号输入非线性***，互调效应使得该***的输出信号不仅仅包括频率为f1和f2的信号，还包括新的频率成分的信号，如2*f1-f2信号，2*f2-f1信号，3*f1–2*f2信号，3*f2-2*f1信号，4*f1–3*f2信号，4*f2-3*f1信号等等。其中2*f1-f2信号和2*f2-f1信号为三阶互调产物IM3，3*f1–2*f2信号和3*f2-2*f1信号为五阶互调产物IM5，4*f1–3*f2信号和4*f2-3*f1信号为七阶互调产物IM7。The following describes the generation of intermodulation by taking a common wireless communication system as an example. Please refer to FIG. 1 , which is a schematic diagram of a wireless communication system according to an embodiment of the present invention. As shown in FIG. 1, the communication system includes a baseband component 110, a radio frequency component 120, and an antenna 150. The baseband component 110 is configured to implement baseband processing, and transmit the processed baseband signal to the radio frequency component 120 to implement medium radio frequency processing or radio frequency processing. The processed RF signal is transmitted to antenna 150 via jumper 130 and feeder 140 for transmission. The jumper 130, the feeder 140 and the antenna 150 form an antenna feeder system, which is merely an example and is not intended to limit the composition of the antenna feeder system. The radio frequency component 120 includes active devices and passive components, and the antenna 150 is a passive device whose nonlinearity causes an intermodulation effect. The intermodulation effect produces a new frequency component, as shown in Figure 2 for the intermodulation effect diagram, two single frequency signals TX1 and TX2, the frequencies being f 1 and f 2 , respectively. These two signals are input into the nonlinear system. The intermodulation effect makes the output signal of the system include not only the signals of frequencies f 1 and f 2 but also the signals of new frequency components, such as 2*f 1 -f 2 signals. 2*f 2 -f 1 signal, 3*f 1 –2*f 2 signal, 3*f 2 -2*f 1 signal, 4*f 1 –3*f 2 signal, 4*f 2 -3*f 1 signal and so on. Wherein the 2*f 1 -f 2 signal and the 2*f 2 -f 1 signal are third-order intermodulation products IM3, the 3*f 1 -2*f 2 signals and the 3*f 2 -2*f 1 signals are fifth-order The intermodulation products IM5, 4*f 1 -3*f 2 signals and 4*f 2 -3*f 1 signals are the seventh-order intermodulation products IM7.
示例的，m*f2-n*f1互调产物的阶数为m+n，其中m和n均为正整数。互调产物的阶数概念本领域人员所熟知，此处不做过多解释。一般情况下，阶数越高互调产物的幅值越小。By way of example, the order of m*f 2 -n*f 1 intermodulation products is m+n, where m and n are both positive integers. The concept of the order of the intermodulation products is well known to those skilled in the art and will not be explained too much herein. In general, the higher the order, the smaller the amplitude of the intermodulation product.
互调产物落在通信***的工作带宽内，会对***内有用的信号造成干扰。如果可以对互调发生位置进行定位，便可以根据定位结果采取更有效的措施降低互调效应。 Intermodulation products fall within the operating bandwidth of the communication system and can interfere with useful signals within the system. If the position of the intermodulation can be located, more effective measures can be taken according to the positioning result to reduce the intermodulation effect.
本发明实施例发现，同阶正反两个方向的互调信号之间存在一定的系数关系，以下称该系数为互调系数，且这个系数随着互调发生位置(以下称为互调位置)改变而不同，因此本发明实施例在互调定位装置中预先存储的互调系数与互调位置的映射关系，且利用互调定位装置测量正反两个方向的互调信号，以确定实际互调系数，进而根据实际互调系数和存储的映射关系，确定互调发生的位置。该方法可以对互调进行定位，以便根据定位结果采取更有效的措施降低互调效应。The embodiment of the present invention finds that there is a certain coefficient relationship between the intermodulation signals in the positive and negative directions of the same order, and the coefficient is the intermodulation coefficient, and the coefficient occurs with the intermodulation position (hereinafter referred to as the intermodulation position). The change is different, so the mapping relationship between the intermodulation coefficient and the intermodulation position pre-stored in the intermodulation positioning device in the embodiment of the present invention is measured, and the intermodulation signals in the forward and reverse directions are measured by the intermodulation positioning device to determine the actual The intermodulation coefficient, and then the position of the intermodulation occurs according to the actual intermodulation coefficient and the stored mapping relationship. The method can locate the intermodulation to take more effective measures to reduce the intermodulation effect according to the positioning result.
请参考图3，其为本发明实施例提供的一种互调定位方法的流程图，该方法由互调定位装置执行，该互调定位装置内存储有互调位置和互调系数的映射关系。如图3所示，该方法包括如下步骤：Please refer to FIG. 3 , which is a flowchart of an intermodulation positioning method according to an embodiment of the present invention. The method is performed by an intermodulation positioning device, where the mapping relationship between the intermodulation position and the intermodulation coefficient is stored. . As shown in FIG. 3, the method includes the following steps:
S301：互调定位装置获取待测元件的正向互调信号和反向互调信号。其中，正向互调信号与反向互调信号为同阶互调产物。S301: The intermodulation positioning device acquires a positive intermodulation signal and a reverse intermodulation signal of the device to be tested. The forward intermodulation signal and the reverse intermodulation signal are the same-order intermodulation products.
S302：互调定位装置根据获取到的正向互调信号和反向互调信号确定实际互调系数。S302: The intermodulation positioning device determines an actual intermodulation coefficient according to the obtained forward intermodulation signal and reverse intermodulation signal.
S303：互调定位装置根据存储的映射关系，确定实际互调系数对应的互调位置，作为互调发生的位置。S303: The intermodulation positioning device determines, according to the stored mapping relationship, an intermodulation position corresponding to the actual intermodulation coefficient, as a position where the intermodulation occurs.
经过以上步骤，互调定位装置便可定位到待测元件的互调效应发生的位置，从而达到了互调定位的效果，便可以根据定位结果采取更有效的措施降低互调效应。After the above steps, the intermodulation positioning device can locate the position where the intermodulation effect of the component to be tested occurs, thereby achieving the effect of intermodulation positioning, and then taking more effective measures to reduce the intermodulation effect according to the positioning result.
以上方法的实现，可以通过如下图4的互调定位装置实现。图4所示的实施例中，待测元件以阵列天线为例。互调以PIM为例。该定位装置400可以包括PIM探测元件410，PIM信号接收元件420，载波测试信号生成元件430，和PIM故障位置分析元件440。其中，载波测试信号生成元件430生成载波信号，并将载波信号输入到被测天线的被测端口，由于天线的无源非线性，产生正向与反向的PIM信号。反向 PIM信号从天线端口输出，正向PIM信号被PIM探测元件410探测，两路PIM信号同步被PIM信号接收元件420解耦接收，经PIM故障位置分析元件440利用以上方法对接收到的PIM信号进行分析，对互调发生的位置进行定位。The implementation of the above method can be implemented by the intermodulation positioning device of FIG. 4 as follows. In the embodiment shown in FIG. 4, the device to be tested is exemplified by an array antenna. Intermodulation uses PIM as an example. The positioning device 400 can include a PIM detecting component 410, a PIM signal receiving component 420, a carrier test signal generating component 430, and a PIM fault location analyzing component 440. The carrier test signal generating component 430 generates a carrier signal and inputs the carrier signal to the measured port of the antenna under test. Due to the passive nonlinearity of the antenna, a forward and reverse PIM signal is generated. Reverse The PIM signal is output from the antenna port, the forward PIM signal is detected by the PIM detecting component 410, the two PIM signal synchronizations are decoupled and received by the PIM signal receiving component 420, and the received PIM signal is performed by the PIM fault location analyzing component 440 by the above method. Analysis, positioning the location where the intermodulation occurs.
以上PIM探测元件410例如可以利用探头实现，包含但不限于探针、探环、半波振子、喇叭天线等。探测元件410是可以移动的，以便探测待测阵列天线的不同位置。需要说明的是，同一个互调定位装置可以包含一个探测元件，通过移动探测元件获取不同位置的正向互调信号；同一个互调定位装置也可以包含多个探测元件，不同的探测元件获取不同位置的正向互调信号。图4所示的互调定位装置以包含一个探测元件410为例。PIM信号接收元件420包含但不限于频谱仪、网分、功率计等，用于接收待测元件正向与反向互调信号。此外，PIM信号接收元件420还可以包括解耦器，包含但不限于双工器、滤波器等，实现载波与PIM混合信号的解耦分离。载波测试信号生成元件430用于提供载波测试信号，例如可以为信号发生器，信号源等。PIM故障位置分析元件440可以通过处理器来实现，该处理器可以为集成了存储和处理元件的芯片，该芯片中的处理元件调用存储元件中的代码执行以上方法中的步骤来对互调发生的位置进行定位，或者处理器可以为特定集成电路(Application Specific Integrated Circuit，ASIC)，微处理器(digital singnal processor，DSP)，或现场可编程门阵列(Field Programmable Gate Array，FPGA)等。The PIM detecting component 410 can be implemented by, for example, a probe, including but not limited to a probe, a probe ring, a half-wave oscillator, a horn antenna, and the like. The detecting element 410 is movable to detect different positions of the array antenna to be tested. It should be noted that the same intermodulation positioning device may include a detecting component that acquires a positive intermodulation signal at different positions by moving the detecting component; the same intermodulation positioning device may also include multiple detecting components, and different detecting components may acquire Positive intermodulation signals at different locations. The intermodulation positioning device shown in FIG. 4 exemplifies a detection element 410. The PIM signal receiving component 420 includes, but is not limited to, a spectrum analyzer, a network segment, a power meter, etc., for receiving forward and reverse intermodulation signals of the device under test. In addition, the PIM signal receiving component 420 can also include a decoupler, including but not limited to a duplexer, a filter, etc., to achieve decoupling separation of the carrier and PIM mixed signals. The carrier test signal generating component 430 is configured to provide a carrier test signal, such as a signal generator, a signal source, and the like. The PIM fault location analysis component 440 can be implemented by a processor, which can be a chip integrated with storage and processing components, the processing components in the chip invoking the code in the storage component performing the steps in the above method to occur for intermodulation The location may be located, or the processor may be an Application Specific Integrated Circuit (ASIC), a digital singnal processor (DSP), or a Field Programmable Gate Array (FPGA).
需要说明的是，以上PIM探测元件410与PIM信号接收元件420可以共同作为互调定位装置400的PIM信号获取元件。此外，载波测试信号生成元件430可以位于互调定位装置400内，作为该装置的一部分；也可以位于互调定位装置400外，单独为被测元件提供载波信号输 入，或者是嵌入在其他元件中的信号发生器。It should be noted that the above PIM detecting component 410 and PIM signal receiving component 420 may be used together as the PIM signal acquiring component of the intermodulation positioning device 400. In addition, the carrier test signal generating component 430 may be located in the intermodulation positioning device 400 as part of the device; or may be located outside the intermodulation positioning device 400 to separately provide carrier signal transmission for the device under test. In, or a signal generator embedded in other components.
图5便给出了一种互调定位装置的可能的实现。图5为本发明实施例提供的一种互调定位装置500的结构示意图。如图5所示，该互调定位装置包括：互调信号获取元件510、存储器520、处理器530。其中，存储器520用于存储互调位置和互调系数的映射关系；互调信号获取元件510用于获取正向互调信号和反向互调信号，处理器530用于根据正向互调信号和反向互调信号确定实际互调系数，且根据存储器520存储的映射关系确定实际互调系数对应的互调位置，作为互调发生的位置。Figure 5 shows a possible implementation of an intermodulation positioning device. FIG. 5 is a schematic structural diagram of an intermodulation positioning apparatus 500 according to an embodiment of the present invention. As shown in FIG. 5, the intermodulation positioning device includes an intermodulation signal acquisition component 510, a memory 520, and a processor 530. The memory 520 is configured to store a mapping relationship between the intermodulation position and the intermodulation coefficient; the intermodulation signal acquisition component 510 is configured to acquire a forward intermodulation signal and a reverse intermodulation signal, and the processor 530 is configured to use the forward intermodulation signal according to the forward intermodulation signal. And the reverse intermodulation signal determines the actual intermodulation coefficient, and determines the intermodulation position corresponding to the actual intermodulation coefficient according to the mapping relationship stored by the memory 520, as the position where the intermodulation occurs.
在一种实现中，互调信号获取元件510可以包括探头511和接收部512，探头511用于探测正向互调信号，接收部512与探头511和待测元件连接，以接收探头511探测的正向互调信号和待测元件输出的反向互调信号。In one implementation, the intermodulation signal acquisition component 510 can include a probe 511 for detecting a forward intermodulation signal, and a receiving portion 512 coupled to the probe 511 and the device under test to receive the probe 511. The forward intermodulation signal and the reverse intermodulation signal output by the device under test.
可选的，如图5所示，互调定位装置500还可以包括信号发生器540，用于给待测元件的提供载波测试信号。Optionally, as shown in FIG. 5, the intermodulation positioning device 500 may further include a signal generator 540 for providing a carrier test signal to the component to be tested.
在以上方法和装置中，反向互调信号和正向互调信号可以存在如下关系，且互调定位装置根据如下关系确定实际互调系数：In the above method and apparatus, the reverse intermodulation signal and the forward intermodulation signal may have the following relationship, and the intermodulation positioning device determines the actual intermodulation coefficient according to the following relationship:
线性关系：反向互调信号＝M*正向互调信号，其中M为互调系数；或者，Linear relationship: reverse intermodulation signal = M * positive intermodulation signal, where M is the intermodulation coefficient; or,
对数关系：log反向互调信号＝log(M*正向互调信号)，即反向互调信号(dB)＝M(dB)+正向互调信号(dB)，其中M为互调系数。Logarithmic relationship: log reverse intermodulation signal = log (M * positive intermodulation signal), that is, reverse intermodulation signal (dB) = M (dB) + positive intermodulation signal (dB), where M is mutual Adjust the coefficient.
在以上方法和装置中，互调系数和互调位置的映射关系可以通过映射列表来体现，即以上互调定位装置内存储有体现互调系数与互调位置的映射关系的映射列表。该映射列表可以为体现互调系数范围与互调位置的映射关系的映射列表，如表1所示；也可以为体现互调系数值与互调位置的映射关系的映射列表，如表2所示。 In the above method and apparatus, the mapping relationship between the intermodulation coefficient and the intermodulation position can be represented by a mapping list, that is, the mapping list that reflects the mapping relationship between the intermodulation coefficient and the intermodulation position is stored in the above intermodulation positioning device. The mapping list may be a mapping list that reflects the mapping relationship between the intermodulation coefficient range and the intermodulation position, as shown in Table 1; or a mapping list that reflects the mapping relationship between the intermodulation coefficient value and the intermodulation position, as shown in Table 2. Show.
表1Table 1
互调系数范围序号Intermodulation coefficient range number 互调系数范围Intermodulation coefficient range 互调位置Intermodulation position
11 K0至K1K0 to K1 L1L1
22 K2至K3K2 to K3 L2L2
33 K4至K5K4 to K5 L3L3
表2Table 2
互调系数值序号Intermodulation coefficient value 互调系数值Intermodulation coefficient value 互调位置Intermodulation position
11 k1 K1 L1L1
22 k2 K2 L2L2
33 k3K3 L3L3
在表1和表2中，第一互调位置L1，第二互调位置L2以及第三互调位置L3是已知的，互调定位装置分别对这三个位置的互调效应进行三次测试，分别得到第一互调系数k1、第二互调系数k2和第三互调系数k3。In Tables 1 and 2, the first intermodulation position L1, the second intermodulation position L2, and the third intermodulation position L3 are known, and the intermodulation positioning device performs three tests on the intermodulation effects of the three positions respectively. Obtaining a first intermodulation coefficient k1, a second intermodulation coefficient k2, and a third intermodulation coefficient k3, respectively.
可见，第一互调系数k1与第一互调位置L1对应，第二互调系数k2与第二互调位置L2对应，第三互调系数k3与第三互调位置L3对应，如表2所示，体现的是互调系数值与互调位置的映射列表。It can be seen that the first intermodulation coefficient k1 corresponds to the first intermodulation position L1, the second intermodulation coefficient k2 corresponds to the second intermodulation position L2, and the third intermodulation coefficient k3 corresponds to the third intermodulation position L3, as shown in Table 2 Shown is a mapping list of intermodulation coefficient values and intermodulation positions.
可选的，也可以建立互调系数范围与互调位置的映射关系。对每个互调位置分别进行测试，得到每个位置对应的互调系数值，然后将每个互调系数值减去一个预设值，将每个互调系数值加上一个预设值，分别作为每个互调系数范围的边界值。或者对每个位置进行多次测试，取多次测试中的互调系数最小值和最大值作为对应该位置的互调系数范围的边界值；或者将最小值减去一个预设值，将最大值加上一个预设值作为对应该位置的互调系数范围的边界值。减去的预设值和加上的预设值可以相同，也可以不同。不同互调系数值减去或者加上的预设值可以相同,也可以不同。例如，K0至K1为第一互调系数范围，第一互调系数范围映射为第一互调位置L1。K2至K3为第二互调系数范围，第二互调系数范围映射为第二互调位置L2。K4至K5为第三互调系数范围，第三互调系 数范围映射为第三互调位置L3。如表1所示，体现的是互调系数范围与互调位置的映射关系的列表。其中，K0，K1，K2，K3，K4，K5是每个互调系数范围的边界值，K0≤K1≤K2≤K3≤K4≤K5。Optionally, a mapping relationship between the intermodulation coefficient range and the intermodulation position may also be established. Each intermodulation position is tested separately to obtain the intermodulation coefficient value corresponding to each position, and then each intermodulation coefficient value is subtracted by a preset value, and each intermodulation coefficient value is added with a preset value. As the boundary value of each intermodulation coefficient range. Or perform multiple tests for each position, taking the minimum and maximum values of the intermodulation coefficients in multiple tests as the boundary value of the intermodulation coefficient range corresponding to the position; or subtracting the minimum value from a preset value, which will be the largest The value is added to a preset value as the boundary value of the range of intermodulation coefficients corresponding to the position. The subtracted preset value and the added preset value may be the same or different. The preset values obtained by subtracting or adding different intermodulation coefficient values may be the same or different. For example, K0 to K1 are the first intermodulation coefficient range, and the first intermodulation coefficient range is mapped to the first intermodulation position L1. K2 to K3 are the second intermodulation coefficient range, and the second intermodulation coefficient range is mapped to the second intermodulation position L2. K4 to K5 are the third intermodulation coefficient range, and the third intermodulation system The number range is mapped to the third intermodulation position L3. As shown in Table 1, a list of mapping relationships between intermodulation coefficient ranges and intermodulation positions is shown. Among them, K0, K1, K2, K3, K4, K5 are the boundary values of each intermodulation coefficient range, K0 ≤ K1 ≤ K2 ≤ K3 ≤ K4 ≤ K5.
上述互调系数范围的大小决定所述装置的定位精度，上述互调系数的范围的划分可以是均匀的也可以是不均匀的，即当第二互调系数范围为K3-K2时，K3-K2可以等于或者不等于K1-K0，其中K1可以等于或者不等于K2。The size of the intermodulation coefficient range determines the positioning accuracy of the device, and the range of the intermodulation coefficient may be uniform or non-uniform, that is, when the second intermodulation coefficient range is K3-K2, K3- K2 may be equal to or not equal to K1-K0, where K1 may be equal to or not equal to K2.
需要说明的是，此处为了方便示例说明，该表1和表2中映射列表的建立只对三个样本位置进行测试，实际建立映射列表时样本可以是多个，此处不对样本待测元件的数量以及样本待测元件的位置数量做限制。另外，表1和表2只是用于示例，此处并不限制映射列表的样式。It should be noted that, for convenience of example, the mapping list in Table 1 and Table 2 is only tested for three sample positions. When the mapping list is actually established, the sample may be multiple. The number of samples and the number of positions of the sample to be tested are limited. In addition, Tables 1 and 2 are only examples, and the style of the map list is not limited here.
当互调定位装置存储体现互调系数范围与互调位置的映射关系的映射列表时，以上确定实际互调系数对应的互调位置的过程可以包括如图6所示的步骤：When the intermodulation positioning device stores the mapping list that reflects the mapping relationship between the intermodulation coefficient range and the intermodulation position, the above process of determining the intermodulation position corresponding to the actual intermodulation coefficient may include the steps shown in FIG. 6:
S601：互调定位装置确定实际互调系数落在映射列表中的第一互调系数范围。例如，确定实际互调系数落在上述表1的第一互调系数范围K0至K1中。S601: The intermodulation positioning device determines a first intermodulation coefficient range in which the actual intermodulation coefficient falls in the mapping list. For example, it is determined that the actual intermodulation coefficient falls within the first intermodulation coefficient range K0 to K1 of Table 1 above.
S602：互调定位装置根据映射列表，确定第一互调系数范围映射到的第一互调位置，作为实际互调系数对应的互调位置。例如，请继续参见表1，实际互调系数所对应的第一互调系数范围映射到第一互调位置L1，则确定该第一互调位置L1作为互调发生的位置。S602: The intermodulation positioning device determines, according to the mapping list, a first intermodulation position to which the first intermodulation coefficient range is mapped, as an intermodulation position corresponding to the actual intermodulation coefficient. For example, please continue to refer to Table 1. The first intermodulation coefficient range corresponding to the actual intermodulation coefficient is mapped to the first intermodulation position L1, and then the first intermodulation position L1 is determined as the position where the intermodulation occurs.
当互调定位装置存储体现互调系数值与互调位置的映射关系的映射列表时，以上确定实际互调系数对应的互调位置的过程可以包括如图7所示的步骤：When the intermodulation positioning device stores the mapping list that reflects the mapping relationship between the intermodulation coefficient value and the intermodulation position, the above process of determining the intermodulation position corresponding to the actual intermodulation coefficient may include the steps shown in FIG. 7:
S701：互调定位装置将实际互调系数与互调列表中的第一互调系数 值做差，并将该差值取绝对值。若该绝对值小于等于预设值，则说明实际互调系数对应第一互调系数值。例如，确定实际互调系数与上述表2中第一互调系数值k1做差的绝对值小于预设值，说明实际互调系数对应第一互调系数值k1。S701: the intermodulation positioning device compares the actual intermodulation coefficient with the first intermodulation coefficient in the intermodulation list The value is made poor and the difference is taken as an absolute value. If the absolute value is less than or equal to the preset value, the actual intermodulation coefficient corresponds to the first intermodulation coefficient value. For example, it is determined that the absolute value of the difference between the actual intermodulation coefficient and the first intermodulation coefficient value k1 in Table 2 is less than a preset value, indicating that the actual intermodulation coefficient corresponds to the first intermodulation coefficient value k1.
S702：互调定位装置根据映射列表，确定第一互调系数映射到第一互调位置，作为实际互调系数对应的互调位置。例如，请继续参考表2，实际互调系数所对应的第一互调系数值k1映射到第一互调位置L1，则确定该第一互调位置L1作为互调发生的位置。S702: The intermodulation positioning device determines, according to the mapping list, that the first intermodulation coefficient is mapped to the first intermodulation position, and is used as an intermodulation position corresponding to the actual intermodulation coefficient. For example, referring to Table 2, the first intermodulation coefficient value k1 corresponding to the actual intermodulation coefficient is mapped to the first intermodulation position L1, and then the first intermodulation position L1 is determined as the position where the intermodulation occurs.
以上表格是预先建立，并存储在互调定位装置中，其中，表格中互调位置可以是实际测试获知也可以是仿真实验获知。The above table is pre-established and stored in the intermodulation positioning device, wherein the intermodulation position in the table may be the actual test or the simulation experiment.
应用本实施例的互调定位的方法，可以有效的定位待测元件互调发生的位置。By applying the method of intermodulation positioning in this embodiment, the position where the intermodulation of the device to be tested occurs can be effectively located.
以上所述实施例以一个互调系数范围或者一个互调系数值对应一个互调位置为例，当待测元件具有多个支路或者多个输出端时，还可以多个互调系数范围或者多个互调系数值对应一个互调位置。The above embodiment takes an intermodulation coefficient range or an intermodulation coefficient value corresponding to an intermodulation position as an example. When the device to be tested has multiple branches or multiple output ends, multiple intermodulation coefficient ranges or A plurality of intermodulation coefficient values correspond to an intermodulation position.
为了使发明实施例进一步被理解，以下以两个互调系数值对应一个互调位置为例说明。图8为本发明实施例提供的一种互调定位装置的示意图，如图8所示，互调定位装置800测试待测阵列天线810。待测元件是阵列天线，为无源器件，所以本实施例中的互调类型为无源互调PIM。该阵列天线810的馈电网络包括一个主馈路和两个支路，即主馈路811，第一支路812和第二支路813。当在主馈路811上输入两个不同频率的单一频率信号时，在第一支路812和第二支路813都会有信号输出，所以若该馈电网络上存在互调效应，每个互调位置对应两个互调系数值。In order to further understand the embodiments of the present invention, the following two intermodulation coefficient values correspond to one intermodulation position as an example. FIG. 8 is a schematic diagram of an intermodulation positioning device according to an embodiment of the present invention. As shown in FIG. 8, the intermodulation positioning device 800 tests the array antenna 810 to be tested. The component to be tested is an array antenna and is a passive device. Therefore, the intermodulation type in this embodiment is a passive intermodulation PIM. The feed network of the array antenna 810 includes a main feed and two branches, a main feed 811, a first branch 812 and a second branch 813. When two single frequency signals of different frequencies are input on the main feeder 811, there is a signal output in the first branch 812 and the second branch 813, so if there is an intermodulation effect on the feed network, each mutual The adjustment position corresponds to two intermodulation coefficient values.
图8所示的存储器840中存储的映射列表820，映射列表中的映射关系为，具体参见表3：第一支路812上的互调系数值k11和第二支路813上的 互调系数值k12对应第一互调位置L1。第一支路812上的互调系数值k21和第二支路813上的互调系数值k22对应第二互调位置L2。第一支路812上的互调系数值k31和第二支路813上的互调系数值k32对应第三互调位置L3。The mapping list 820 stored in the memory 840 shown in FIG. 8 has a mapping relationship in the mapping list. For details, refer to Table 3: the intermodulation coefficient value k11 on the first branch 812 and the second branch 813. The intermodulation coefficient value k12 corresponds to the first intermodulation position L1. The intermodulation coefficient value k21 on the first leg 812 and the intermodulation coefficient value k22 on the second leg 813 correspond to the second intermodulation position L2. The intermodulation coefficient value k31 on the first leg 812 and the intermodulation coefficient value k32 on the second leg 813 correspond to the third intermodulation position L3.
表3table 3
互调系数值序号Intermodulation coefficient value 第一支路互调系数值First branch intermodulation coefficient value 第二支路互调系数值Second branch intermodulation coefficient value 互调位置Intermodulation position
11 k11 K11 k12K12 L1L1
22 k21 K21 k22K22 L2L2
33 k31K31 k32K32 L3L3
请继续参考图8，信号发生器850在主馈路811输入两个不同频率的信号。探头801和探头802分别获取第一支路812和第二支路813上的正向互调信号，接收部件803还获取了第一支路和第二支路的反向互调信号，此处的反向互调信号时两个支路反向互调信号叠加在一起的反向互调信号。再根据图3所示的方法，处理得到第一支路812和第二支路813的实际互调系数分别为N1和N2，互调定位装置将N1，N2同映射列表中的第一支路812和第二支路813互调系数分别做差，并分别对所述差值取绝对值。示例的,若N1-k31的绝对值和/或N2-k32的绝对值小于或等于每个支路上的预设值，根据映射列表820的映射关系，则说明待测的互调效应PIM发生在第三互调位置L3。With continued reference to FIG. 8, the signal generator 850 inputs two signals of different frequencies at the main feed 811. The probe 801 and the probe 802 respectively obtain the forward intermodulation signals on the first branch 812 and the second branch 813, and the receiving component 803 also acquires the reverse intermodulation signals of the first branch and the second branch, where The reverse intermodulation signal is a reverse intermodulation signal in which two branches reverse intermodulation signals are superimposed. According to the method shown in FIG. 3, the actual intermodulation coefficients of the first branch 812 and the second branch 813 are respectively N1 and N2, and the intermodulation positioning device maps the first branch in the mapping list with N1 and N2. The intermodulation coefficients of 812 and the second branch 813 are respectively poor, and the absolute values are respectively taken. For example, if the absolute value of N1-k31 and/or the absolute value of N2-k32 is less than or equal to the preset value of each branch, according to the mapping relationship of the mapping list 820, the intermodulation effect PIM to be tested occurs. The third intermodulation position L3.
上述实施例中互调信号获取元件830包括上述的探头801，探头802以及接收部件803。The intermodulation signal acquisition component 830 in the above embodiment includes the probe 801, the probe 802, and the receiving component 803 described above.
需要说明的是，信号发生装置850可以在互调定位装置800之外单独存在，或者嵌入其他设备的信号源模块。It should be noted that the signal generating device 850 may exist separately from the intermodulation positioning device 800 or be embedded in the signal source module of other devices.
通过以上实施例方法，可以有效的定位待测阵列天线810的馈电网络的互调效应发生的位置。Through the method of the above embodiment, the position where the intermodulation effect of the feed network of the array antenna 810 to be tested occurs can be effectively located.
在以上实施例中，若互调定位装置接收到信号小于***底噪或者接近***底噪，则互调定位装置自动删除该信号。另外，当待测元件的互调效应较小或者不存在互调效应，或者同阶互调产物中只有正向互调产 物或只有反向互调信号，互调定位装置可以识别出来自动删除该信号，以节省互调定位装置的处理时间，以提升互调定位装置的处理能力。In the above embodiment, if the intermodulation positioning device receives the signal less than the system noise floor or approaches the system noise floor, the intermodulation positioning device automatically deletes the signal. In addition, when the intermodulation effect of the device to be tested is small or there is no intermodulation effect, or only the positive intermodulation products of the same order intermodulation products The object or only the reverse intermodulation signal, the intermodulation positioning device can recognize and automatically delete the signal to save the processing time of the intermodulation positioning device, so as to improve the processing capability of the intermodulation positioning device.
通过以上所述的各个实施例可见，映射关系中可以是一个互调系数值对应一个互调效应发生位置，或者是一个互调系数范围对应一个互调效应发生位置。It can be seen from the foregoing embodiments that the mapping relationship may be an intermodulation coefficient value corresponding to an intermodulation effect occurrence position, or an intermodulation coefficient range corresponding to an intermodulation effect occurrence position.
映射关系中还可以是多个互调系数值对应一个互调效应发生位置，或者是多个互调系数范围对应一个互调效应发生位置，此处不对互调系数/互调系数范围的个数做具体限制。The mapping relationship may also be that a plurality of intermodulation coefficient values correspond to an intermodulation effect occurrence position, or a plurality of intermodulation coefficient ranges correspond to an intermodulation effect occurrence position, where the number of intermodulation coefficients/intermodulation coefficient ranges is not used here. Make specific restrictions.
总之，以上所述仅为本发明技术方案的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 In summary, the above description is only a preferred embodiment of the technical solution of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims (8)

  1. 一种互调定位方法，其特征在于，所述方法包括：An intermodulation positioning method, characterized in that the method comprises:
    互调定位装置分别获取待测元件的第一正向互调信号和第一反向互调信号，其中，所述第一正向互调信号与所述第一反向互调信号为同阶互调产物，所述互调定位装置存储有互调位置和互调系数的映射关系，其中，所述互调系数是同阶正向互调信号与反向互调信号的关系系数；The intermodulation positioning device respectively obtains a first forward intermodulation signal and a first reverse intermodulation signal of the device to be tested, wherein the first forward intermodulation signal and the first reverse intermodulation signal are in the same order An intermodulation device, wherein the intermodulation positioning device stores a mapping relationship between an intermodulation position and a mutual adjustment coefficient, wherein the intermodulation coefficient is a relationship coefficient between a same-order forward intermodulation signal and a reverse intermodulation signal;
    所述互调定位装置根据所述第一正向互调信号和所述第一反向互调信号确定实际互调系数；The intermodulation positioning device determines an actual intermodulation coefficient according to the first forward intermodulation signal and the first reverse intermodulation signal;
    所述互调定位装置根据所述映射关系，确定所述实际互调系数对应的互调位置，作为互调发生的位置。The intermodulation positioning device determines an intermodulation position corresponding to the actual intermodulation coefficient according to the mapping relationship, as a position where intermodulation occurs.
  2. 根据权利要求1所述的方法，其特征在于，所述映射关系包括体现互调系数范围与互调位置的映射关系的映射列表，所述互调定位装置根据所述映射关系，确定所述实际互调系数对应的互调位置，包括：The method according to claim 1, wherein the mapping relationship comprises a mapping list that reflects a mapping relationship between a range of intermodulation coefficients and an intermodulation position, and the intermodulation positioning device determines the actuality according to the mapping relationship. The intermodulation position corresponding to the intermodulation coefficient, including:
    所述互调定位装置确定所述实际互调系数落在所述映射列表中的第一互调系数范围；The intermodulation positioning device determines a first intermodulation coefficient range in which the actual intermodulation coefficient falls in the mapping list;
    所述互调定位装置根据所述映射列表，确定所述第一互调系数范围映射到的第一互调位置，作为所述实际互调系数对应的互调位置。The intermodulation positioning device determines, according to the mapping list, a first intermodulation position to which the first intermodulation coefficient range is mapped, as an intermodulation position corresponding to the actual intermodulation coefficient.
  3. 根据权利要求1所述的方法，其特征在于，所述映射关系包括体现互调系数值与互调位置的映射关系的映射列表，所述互调定位装置根据所述映射关系，确定所述实际互调系数对应的互调位置，包括：The method according to claim 1, wherein the mapping relationship comprises a mapping list that reflects a mapping relationship between an intermodulation coefficient value and an intermodulation position, and the intermodulation positioning device determines the actuality according to the mapping relationship. The intermodulation position corresponding to the intermodulation coefficient, including:
    所述互调定位装置在所述映射列表中找到第一互调系数，其中，所述实际互调系数与所述第一互调系数之差的绝对值小于或等于预设值；The intermodulation positioning device finds a first intermodulation coefficient in the mapping list, where an absolute value of a difference between the actual intermodulation coefficient and the first intermodulation coefficient is less than or equal to a preset value;
    所述互调定位装置根据所述映射列表，确定所述第一互调系数映射到的第一互调位置，作为所述实际互调系数对应的互调位置。The intermodulation positioning device determines, according to the mapping list, a first intermodulation position to which the first intermodulation coefficient is mapped, as an intermodulation position corresponding to the actual intermodulation coefficient.
  4. 根据权利要求1至3任一项所述的方法，其特征在于，所述同 阶正向互调信号和反向互调信号存在如下关系，且所述互调定位装置根据如下关系确定实际互调系数：Method according to any one of claims 1 to 3, characterized in that said same The order forward intermodulation signal and the reverse intermodulation signal have the following relationship, and the intermodulation positioning device determines the actual intermodulation coefficient according to the following relationship:
    反向互调信号＝M*正向互调信号，其中M为互调系数；或者，Reverse intermodulation signal = M * positive intermodulation signal, where M is the intermodulation coefficient; or,
    反向互调信号(dB)＝M(dB)+正向互调信号(dB)，其中M为互调系数。Reverse intermodulation signal (dB) = M (dB) + positive intermodulation signal (dB), where M is the intermodulation coefficient.
  5. 一种互调定位装置，其特征在于，所述装置包括：An intermodulation positioning device, characterized in that the device comprises:
    存储器，用于存储互调位置和互调系数的映射关系，其中，所述互调系数是同阶正向互调信号与反向互调信号的关系系数；a memory for storing a mapping relationship between the intermodulation position and the intermodulation coefficient, wherein the intermodulation coefficient is a relationship coefficient between the same-order forward intermodulation signal and the reverse intermodulation signal;
    互调信号获取元件，用于获取待测元件的第一正向互调信号和第一反向互调信号，其中，所述第一正向互调信号与所述第一反向互调信号为同阶互调产物；An intermodulation signal acquisition component, configured to acquire a first forward intermodulation signal and a first reverse intermodulation signal of the device to be tested, wherein the first forward intermodulation signal and the first reverse intermodulation signal Intermodulation products of the same order;
    处理器，用于根据所述第一正向互调信号和所述第一反向互调信号确定实际互调系数，且根据所述映射关系确定所述实际互调系数对应的互调位置，作为互调发生的位置。a processor, configured to determine an actual intermodulation coefficient according to the first forward intermodulation signal and the first reverse intermodulation signal, and determine an intermodulation position corresponding to the actual intermodulation coefficient according to the mapping relationship, As the location where the intermodulation occurs.
  6. 根据权利要求5所述的装置，其特征在于，所述映射关系包括体现互调系数范围与互调位置的映射关系的映射列表，所述处理单元用于执行以下操作以确定所述实际互调系数对应的互调位置：The apparatus according to claim 5, wherein the mapping relationship comprises a mapping list that reflects a mapping relationship between a range of intermodulation coefficients and an intermodulation position, and the processing unit is configured to perform the following operations to determine the actual intermodulation Intermodulation position corresponding to the coefficient:
    确定所述实际互调系数落在所述映射列表中的第一互调系数范围；Determining a range of the first intermodulation coefficient in which the actual intermodulation coefficient falls in the mapping list;
    根据所述映射列表，确定所述第一互调系数范围映射到的第一互调位置，作为所述实际互调系数对应的互调位置。Determining, according to the mapping list, a first intermodulation position to which the first intermodulation coefficient range is mapped, as an intermodulation position corresponding to the actual intermodulation coefficient.
  7. 根据权利要求5所述的装置，其特征在于，所述映射关系包括体现互调系数值与互调位置的映射关系的映射列表，所述处理单元用于执行以下操作以确定所述实际互调系数对应的互调位置：The apparatus according to claim 5, wherein the mapping relationship comprises a mapping list that reflects a mapping relationship between an intermodulation coefficient value and an intermodulation position, and the processing unit is configured to perform the following operations to determine the actual intermodulation Intermodulation position corresponding to the coefficient:
    在所述映射列表中找到第一互调系数，其中，所述实际互调系数与所述第一互调系数之差的绝对值小于或等于预设值； Finding a first intermodulation coefficient in the mapping list, where an absolute value of a difference between the actual intermodulation coefficient and the first intermodulation coefficient is less than or equal to a preset value;
    根据所述映射列表，确定所述第一互调系数映射到的第一互调位置，作为所述实际互调系数对应的互调位置。Determining, according to the mapping list, a first intermodulation position to which the first intermodulation coefficient is mapped, as an intermodulation position corresponding to the actual intermodulation coefficient.
  8. 根据权利要求6至7任一项所述的装置，其特征在于，所述同阶正向互调信号和反向互调信号存在如下关系，且所述处理单元根据如下关系确定实际互调系数：The apparatus according to any one of claims 6 to 7, wherein the same-order forward intermodulation signal and the reverse intermodulation signal have the following relationship, and the processing unit determines the actual intermodulation coefficient according to the following relationship. :
    反向互调信号＝M*正向互调信号，其中M为互调系数；或者，Reverse intermodulation signal = M * positive intermodulation signal, where M is the intermodulation coefficient; or,
    反向互调信号(dB)＝M(dB)+正向互调信号(dB)，其中M为互调系数。 Reverse intermodulation signal (dB) = M (dB) + positive intermodulation signal (dB), where M is the intermodulation coefficient.
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