WO2018000507A1 - 射频发射电路、控制方法及移动终端 - Google Patents

射频发射电路、控制方法及移动终端 Download PDF

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Publication number
WO2018000507A1
WO2018000507A1 PCT/CN2016/092531 CN2016092531W WO2018000507A1 WO 2018000507 A1 WO2018000507 A1 WO 2018000507A1 CN 2016092531 W CN2016092531 W CN 2016092531W WO 2018000507 A1 WO2018000507 A1 WO 2018000507A1
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Prior art keywords
port
circuit
matching circuit
matching
radio frequency
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PCT/CN2016/092531
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English (en)
French (fr)
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陈剑
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宇龙计算机通信科技(深圳)有限公司
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Publication of WO2018000507A1 publication Critical patent/WO2018000507A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits

Definitions

  • the present application relates to the field of communications, for example, to a radio frequency transmitting circuit, a control method, and a mobile terminal.
  • the embodiment of the present application provides a radio frequency transmitting circuit, a control method, and a mobile terminal, so as to reduce the space of the radio frequency circuit PCB and reduce the difficulty of the radio frequency circuit PCB.
  • the first aspect of the present application provides a radio frequency transmitting circuit, including:
  • Radio frequency transceiver central processing unit, first matching circuit, power amplifier, second matching circuit, matching control module, first switch, duplexer, filter, second switch, third matching circuit, coupler and antenna;
  • the first port of the radio frequency transceiver is connected to the first port of the coupler, and the second port of the radio frequency transceiver is connected to the first port of the first matching circuit, where the radio frequency transceiver is a third port is connected to the third port of the central processing unit;
  • the first port of the central processing unit is a first port of the power amplifier, the second port of the central processor is coupled to the second port of the matching control module;
  • the second port of the first matching circuit is coupled to the second port of the power amplifier a third port of the power amplifier is connected to a third port of the second matching circuit;
  • a first port of the second matching circuit is connected to a first port of the matching control module, the second matching circuit
  • the second port is connected to the second port of the first switch;
  • the first port of the first switch is connected to the first port of the duplexer, the third port of the first switch is connected to the filter
  • the first port of the duplexer is connected to the third port of the matching control module, and the third port
  • the first switch and the second switch are single pole double set switches.
  • the first matching circuit is Type matching circuit.
  • the second matching circuit is Type matching circuit.
  • the second matching circuit is based on the The topology circuit of the type matching circuit.
  • the third matching circuit is Type matching circuit.
  • the third matching circuit is based on the The topology circuit of the type matching circuit.
  • the The type matching circuit includes a programmable inductor and a programmable capacitor connected to each of the programmable inductors.
  • the The topology circuit of the type matching circuit includes at least two programmable inductors and programmable capacitors respectively coupled across the programmable inductor.
  • the duplexer is a programmable duplexer.
  • the filter is a programmable filter.
  • the second aspect of the present application provides a method for controlling a radio frequency transmitting circuit of a radio frequency transmitting circuit according to the first embodiment of the present application and the first embodiment of the present application, including:
  • the central processor acquires a current working frequency band of the radio frequency transmitting circuit; the central processor sends a control command that carries the current working frequency band to the matching control module; and the matching control module extracts a current working frequency band in the control command; And the matching control module adjusts the second matching circuit based on the current working frequency band and the mapping relationship between the pre-stored working frequency band and the working parameters of the second matching circuit, the duplexer, the filter, and the third matching circuit. Operating parameters of the duplexer, the filter, and the third matching circuit to cause the adjusted second matching circuit, the duplexer, the filter, and the third matching The operating parameters of the circuit match the current operating frequency band of the RF transmitting circuit.
  • the third aspect of the present application provides a mobile terminal based on the radio frequency transmitting circuit according to the first embodiment of the present application and any aspect of the first embodiment of the present application.
  • the embodiment of the present application further provides a non-transitory computer readable storage medium storing computer executable instructions for performing the above method.
  • the central processing unit acquires a current working frequency band of the radio frequency transmitting circuit, and the central processing unit sends, to the matching control module, a control instruction that carries the current working frequency band, so that the The matching control module extracts a current working frequency band in the control instruction, and based on the current working frequency band and a mapping relationship between the pre-stored working frequency band and the working parameters of the second matching circuit, the duplexer, the filter, and the third matching circuit Adjusting operating parameters of the second matching circuit, the duplexer, the filter, and the third matching circuit, so that the adjusted second matching circuit, the duplexer, and the The operating parameters of the filter and the third matching circuit match the current operating frequency band of the radio frequency transmitting circuit.
  • FIG. 1 is a schematic structural diagram of a radio frequency transmitting circuit according to a first embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a radio frequency transmitting circuit according to a second embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a method for controlling a radio frequency transmitting circuit according to a third embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a mobile terminal according to a fourth embodiment of the present application.
  • references to "an embodiment” herein mean that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application.
  • the appearances of the phrases in various places in the specification are not necessarily referring to the same embodiments, and are not exclusive or alternative embodiments that are mutually exclusive. Those skilled in the art will understand and implicitly understand that the embodiments described herein can be combined with other embodiments.
  • FIG. 1 is a schematic structural diagram of a radio frequency transmitting circuit according to a first embodiment of the present disclosure.
  • the radio frequency transmitting circuit in the embodiment of the present application includes the following modules:
  • Radio frequency transceiver WTR central processing unit CPU, first matching circuit, power amplifier PA, second matching circuit, matching control module, first switch SP2T1, duplexer, filter, second switch SP2T2, third matching circuit, Coupler and antenna;
  • the antenna function is to convert the high frequency electromagnetic wave into a high frequency signal current;
  • the third matching circuit is mainly used to complete the power matching between the main board and the antenna, so that the efficiency of the antenna is as high as possible;
  • duplexer In analog mobile communication devices (such as ETACS mobile phones, walkie-talkies) and CDMA mobile phones and FDD WCDMA mobile phones using frequency division duplex (FDD) technology, the antenna circuit part usually uses duplexers (DUP, DUPLEX) to separate the receiving and transmitting.
  • RF signal In analog mobile communication devices (such as ETACS mobile phones, walkie-talkies) and CDMA mobile phones and FDD WCDMA mobile phones using frequency division duplex (FDD) technology, the antenna circuit part usually uses duplexers (DUP, DUPLEX) to separate the receiving and transmitting.
  • RF signal RF signal.
  • a duplexer also called a duplex filter, is a passive device that internally includes a transmit filter and a receive filter, both of which are bandpass filters that separate the received RF signal from the transmitted RF signal. Prevent strong transmit signals from affecting the receiver.
  • the receiving filter prevents the transmitted signal from being strung into the receiving level, and also rejects signals other than the receiving frequency band received by the antenna; and the transmitting filter rejects the noise power of the receiving frequency band and transmits the modulated signal.
  • the RF transceiver WTR is the core component of the RF circuit, which mainly performs the adjustment and demodulation of the RF signal.
  • a first port of the radio frequency transceiver is connected to a first port of the coupler, a second port of the radio frequency transceiver is connected to a first port of the first matching circuit, and a third port of the radio frequency transceiver a port is coupled to a third port of the central processor; a first port of the central processor is coupled to a first port of the power amplifier, a second port of the central processor is coupled to a first of the matching control module a second port connection; a second port of the first matching circuit is coupled to a second port of the power amplifier; a third port of the power amplifier is coupled to a third port of the second matching circuit; a first port of the matching circuit is connected to the first port of the matching control module, a second port of the second matching circuit is connected to a second port of the first switch; a first port of the first switch is a first port of the duplexer is connected, a third port of the first switch is connected to a first port of the filter; a second port of the duplexer
  • the central processor acquires a current working frequency band of the radio frequency transmitting circuit, and the central processor sends a control instruction that carries the current working frequency band to the matching control module, so that the matching control module extracts the control command.
  • Adjusting the second matching circuit and the current operating frequency band based on the current working frequency band and the mapping relationship between the pre-stored working frequency band and the operating parameters of the second matching circuit, the duplexer, the filter, and the third matching circuit
  • Operating parameters of the duplexer, the filter, and the third matching circuit to adjust the second matching circuit, the duplexer, the filter, and the third matching circuit
  • the operating parameters match the current operating frequency band of the RF transmitting circuit.
  • the output end of the power amplifier PA is connected to the second matching circuit, and the second matching circuit
  • a programmable capacitor inductor is used as the matching device for the match bit, and a dual L-type matching circuit can be used to meet the multi-dimensional requirements of RF debugging.
  • the duplexer and filter can also be programmed with a bandwidth selectable. Band-selectable duplexer and filter for filtering and debugging in different frequency bands using a duplexer and filter, and switching between different frequency bands of time division and frequency division by single-pole double-throw (SP2T) switch.
  • SP2T single-pole double-throw
  • the radio frequency transmitting circuit in the embodiment of the present application adds a module in the conventional radio frequency circuit, that is, the matching control module, to realize the selection of the matching capacitor value and the inductance value in different frequency bands, the central processing unit CPU
  • the control matching control chip selects the matching capacitance value and the inductance value.
  • the duplexer and the filter back end also use a programmable capacitor inductance, and also uses a double L-type matching circuit to meet the circuit diversity requirement.
  • Adjusting the mapping relationship between the working frequency band and the operating parameters of the second matching circuit, the duplexer, the filter, and the third matching circuit, adjusting the second matching circuit, the duplexer, the filter, and the The process of mapping the working parameters of the three matching circuits can be selected by the following method. Since the RF transmitting circuit basically focuses on the RF performance under the maximum gain of the PA, it is selected. For the path capacitance inductance value, select a different set of RGI values (RF gain index) for a fixed frequency band, and the RGI value is used to control the transmit power of the WTR). Under each set of fixed RGI values, control the PA to obtain the maximum gain.
  • RGI values RF gain index
  • the central processing unit acquires a current working frequency band of the radio frequency transmitting circuit, and the central processing unit sends, to the matching control module, a control instruction that carries the current working frequency band, so that the The matching control module extracts a current working frequency band in the control instruction, and based on the current working frequency band and a mapping relationship between the pre-stored working frequency band and working parameters of the second matching circuit, the duplexer, the filter, and the third matching circuit Adjusting operating parameters of the second matching circuit, the duplexer, the filter, and the third matching circuit, so that the adjusted second matching circuit, the duplexer, and the The operating parameters of the filter and the third matching circuit match the current operating frequency band of the radio frequency transmitting circuit.
  • FIG. 2 is a schematic structural diagram of a radio frequency transmitting circuit according to a second embodiment of the present application.
  • the radio frequency transmitting circuit in the embodiment of the present application is the radio frequency transmitting circuit shown in FIG. Based on the development of the basis.
  • the first switch and the second switch are single-pole dual-position switches.
  • the first matching circuit is Type matching circuit.
  • the second matching circuit is Type matching circuit or based on The topology circuit of the type matching circuit.
  • the third matching circuit is Type matching circuit or based on The topology circuit of the type matching circuit.
  • the The type matching circuit includes a programmable inductor and a programmable capacitor respectively coupled across the programmable inductor
  • the The topology circuit of the type matching circuit includes at least two programmable inductors and programmable capacitors respectively coupled across the programmable inductor.
  • the duplexer is a programmable duplexer.
  • the filter is a programmable filter.
  • the central processing unit acquires a current working frequency band of the radio frequency transmitting circuit, and the central processing unit sends, to the matching control module, a control instruction that carries the current working frequency band, so that the The matching control module extracts a current working frequency band in the control instruction, and based on the current working frequency band and a mapping relationship between the pre-stored working frequency band and working parameters of the second matching circuit, the duplexer, the filter, and the third matching circuit Adjusting operating parameters of the second matching circuit, the duplexer, the filter, and the third matching circuit, so that the adjusted second matching circuit, the duplexer, and the The operating parameters of the filter and the third matching circuit match the current operating frequency band of the radio frequency transmitting circuit.
  • FIG. 3 is a schematic flowchart of a method for controlling a radio frequency transmitting circuit according to a third embodiment of the present application. As shown in FIG. 3, the radio frequency transmitting circuit control method in the embodiment of the present application is based on FIG. To the RF transmitting circuit shown in Figure 2.
  • the central processor acquires a current operating frequency band of the radio frequency transmitting circuit.
  • the central processor sends a control instruction carrying the current working frequency band to the matching control module.
  • the matching control module extracts a current working frequency band in the control instruction.
  • the matching control module adjusts the second based on the current working frequency band and the mapping relationship between the pre-stored working frequency band and the working parameters of the second matching circuit, the duplexer, the filter, and the third matching circuit.
  • the operating parameters of the three matching circuits match the current operating frequency bands of the RF transmitting circuit.
  • the central processing unit acquires a current working frequency band of the radio frequency transmitting circuit, and the central processing unit sends, to the matching control module, a control instruction that carries the current working frequency band, so that the The matching control module extracts a current working frequency band in the control instruction, and based on the current working frequency band and a mapping relationship between the pre-stored working frequency band and working parameters of the second matching circuit, the duplexer, the filter, and the third matching circuit Adjusting operating parameters of the second matching circuit, the duplexer, the filter, and the third matching circuit, so that the adjusted second matching circuit, the duplexer, and the The operating parameters of the filter and the third matching circuit match the current operating frequency band of the radio frequency transmitting circuit.
  • the embodiment of the present application further provides a mobile terminal, where the mobile terminal includes the radio frequency transmitting circuit shown in FIG. 1 or FIG. 2 of the present application.
  • the mobile terminal includes the radio frequency transmitting circuit shown in FIG. 1 or FIG. 2 of the present application.
  • FIG. 4 for the convenience of description, only the parts related to the embodiments of the present application are shown, and the technical details are not disclosed. Please refer to the method part of the embodiment of the present application.
  • the mobile terminal can be any type of terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), and a vehicle-mounted computer, and the mobile terminal is used as a mobile phone as an example:
  • FIG. 4 is a block diagram showing a partial structure of a mobile phone related to a mobile terminal provided by an embodiment of the present application.
  • the mobile phone includes: a radio frequency (RF) circuit 410, a memory 420, an input unit 430, a display unit 440, a sensor 450, an audio circuit 460, and a wireless fidelity (Wireless) in the first embodiment of the present application.
  • RF radio frequency
  • the structure of the handset shown in FIG. 4 does not constitute a limitation to the handset, and may include more or less components than those illustrated, or some components may be combined, or different component arrangements.
  • the RF circuit 410 can be used for receiving and transmitting information.
  • the RF circuit 410 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like.
  • RF circuitry 410 can also communicate with the network and other devices via wireless communication.
  • the above wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division). Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), E-mail, and Short Messaging Service (SMS).
  • GSM Global System of Mobile communication
  • GPRS General Packet Radio Service
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • E-mail E-mail
  • SMS Short Messaging Service
  • the memory 420 can be used to store software programs and modules, and the processor 480 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory 420.
  • the memory 420 may mainly include a storage program area and an storage data area, wherein the storage program area may store an operating system and an application required for at least one function (data acquisition function, data comparison function, etc.), and the like; the storage data area may be stored according to The data created by the use of the mobile phone (such as global sound parameters and application level sound parameters, etc.).
  • memory 420 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, and other volatile solid state storage devices.
  • the input unit 430 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the handset.
  • the input unit 430 may include one or more of a fingerprint recognition module, a physical keyboard, function keys (such as a volume control button, a switch button, etc.), a trackball, a mouse, and a joystick.
  • the display unit 440 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone.
  • the display unit 440 can include a display screen 441.
  • the display screen 441 can be configured in the form of a liquid crystal display (LCD) or an organic light-emitting diode (OLED).
  • LCD liquid crystal display
  • OLED organic light-emitting diode
  • the handset may also include at least one type of sensor 450, such as a light sensor, motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light transmission
  • the sensor can adjust the brightness of the display 441 according to the brightness of the ambient light, and the proximity sensor can turn off the display 441 and/or the backlight when the mobile phone moves to the ear.
  • the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity.
  • Audio circuitry 460, speaker 461, and microphone 462 can provide an audio interface between the user and the handset.
  • the audio circuit 460 can transmit the converted electrical data of the received audio data to the speaker 461 for conversion to the sound signal by the speaker 461.
  • the microphone 462 converts the collected sound signal into an electrical signal, and the audio circuit 460 After receiving, it is converted into audio data, and then processed by the audio data playing processor 480, sent to the mobile phone 410 via the RF circuit 410, or played to the memory 420 for processing.
  • Wi-Fi is a short-range wireless transmission technology.
  • the mobile phone can help users to send and receive e-mail, browse web pages and access streaming media through the Wi-Fi module 470, which provides users with wireless broadband Internet access.
  • FIG. 4 shows the Wi-Fi module 470, it can be understood that it does not belong to the necessary configuration of the mobile phone, and can be omitted as needed within the scope of not changing the essence of the application.
  • the processor 480 is the control center of the handset, and connects various portions of the entire handset using various interfaces and lines, by executing or executing software programs and/or modules stored in the memory 420, and invoking data stored in the memory 420, executing The phone's various functions and processing data, so that the overall monitoring of the phone.
  • the processor 480 may include one or more processing units; optionally, the processor 480 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, and an application. Etc.
  • the modem processor primarily handles wireless communications. It can be understood that the above modem processor may not be integrated into the processor 480.
  • the handset also includes a power source 490 (such as a battery) that supplies power to the various components.
  • a power source 490 such as a battery
  • the power source can be logically coupled to the processor 480 through a power management system to manage charging, discharging, and power management functions through the power management system.
  • the mobile phone may further include a camera, a Bluetooth module, and the like, and details are not described herein again.
  • the embodiment of the present application further provides a computer storage medium, wherein the computer storage medium may store a program, and the program includes some or all of the steps of the monitoring method of any one of the service processes described in the foregoing method embodiments.
  • the sequence of steps of the method in the embodiment of the present application may be adjusted, merged, or deleted according to actual needs.
  • the unit of the terminal in the embodiment of the present application may be integrated, divided, or deleted according to actual needs.
  • the disclosed apparatus can be implemented in other ways.
  • the device embodiments described above are schematic, for example, the division of the unit is a logical function division, and the actual implementation may have another division manner, for example, multiple units or components may be combined or may be integrated into other units.
  • the system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may also be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present application may be embodied in the form of a software product in the form of a software product, or a part of the technical solution, which is stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like.
  • the medium of the program code includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: Flash disk, read-only memory (English: Read-Only Memory, referred to as: ROM), random accessor (English: Random Access Memory, referred to as: RAM), disk or optical disk.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • the radio frequency transmitting circuit, the control method and the mobile terminal provided by the embodiments of the present application avoid the need to add multiple matching circuits to the different working frequency bands of the radio frequency circuit in the front end of the power amplifier, thereby facilitating the reduction of the PCB space of the radio frequency circuit. Reduce the difficulty of PCB layout of RF circuits.

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Abstract

一种射频发射电路、控制方法及移动终端，其中的射频发射电路包括：射频收发机（WTR）、中央处理器（CPU）、第一匹配电路、功率放大器（PA）、第二匹配电路、匹配控制模块、第一开关（SP2T1）、双工器、滤波器、第二开关（SP2T2）、第三匹配电路、耦合器以及天线。

Description

射频发射电路、控制方法及移动终端
本申请要求于2016年6月30日提交中国专利局，申请号为201610505800.8、发明名称为“一种射频发射电路、控制方法及移动终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，例如涉及一种射频发射电路、控制方法及移动终端。
背景技术
随着半导体技术的不断发展，集成电路的集成度也越来越高，伴随着软件的不断强化，集成电路的控制已经基本进入了软件无线电的阶段，随着软件无线电的迅速发展，硬件电路将会变得越来越集中、简单，并且所有的电路器件将会被软件控制，甚至被软件取代，这将是集成电路发展的必然趋势，在这种形势下，射频电路也会迎来极大的改变。本技术方案的发明人在研究过程中发现，相关技术中的射频发射电路中，每条射频发射通路(基本上以频段划分)在功率放大器PA前端都需要加一个
Figure PCTCN2016092531-appb-000001
型匹配电路，以保证PA输出的阻抗在性能最佳的位置，频段越多，匹配越多，所用的电容、电感的物料越多，占用印制电路板PCB的空间越大；由于电容电感物料使用的多，也会造成PCB布线的难度增大，不宜走线。
发明内容
本申请实施例提供了一种射频发射电路、控制方法及移动终端，以期减小射频电路PCB空间、降低射频电路PCB布线难度。
本申请第一方面提供一种射频发射电路，包括：
射频收发机、中央处理器、第一匹配电路、功率放大器、第二匹配电路、匹配控制模块、第一开关、双工器、滤波器、第二开关、第三匹配电路、耦合器以及天线；
其中，所述射频收发机的第一端口与所述耦合器的第一端口连接，所述射频收发机的第二端口与所述第一匹配电路的第一端口连接，所述射频收发机的第三端口与所述中央处理器的第三端口连接；所述中央处理器的第一端口与所 述功率放大器的第一端口连接，所述中央处理器的第二端口与所述匹配控制模块的第二端口连接；所述第一匹配电路的第二端口与所述功率放大器的第二端口连接；所述功率放大器的第三端口与所述第二匹配电路的第三端口连接；所述第二匹配电路的第一端口与所述匹配控制模块的第一端口连接，所述第二匹配电路的第二端口与所述第一开关的第二端口连接；所述第一开关的第一端口与所述双工器的第一端口连接，所述第一开关的第三端口与所述滤波器的第一端口连接；所述双工器的第二端口与所述匹配控制模块的第三端口连接，所述双工器的第三端口与所述第二开关的第一端口连接；所述滤波器的第二端口与所述匹配控制模块的第四端口连接；所述滤波器的第三端口与所述第二开关的第二端口连接；所述第二开关的第三端口与所述第三匹配电路的第一端口连接；所述第三匹配电路的第二端口与所述匹配控制模块的第五端口连接，所述第三匹配电路的第三端口与所述耦合器的第二端口连接；所述耦合器的第三端口与所述天线进行连接。
结合第一方面，在一些可能的实现方式中，所述第一开关和所述第二开关为单刀双置开关。
结合第一方面，在一些可能的实现方式中，所述第一匹配电路为
Figure PCTCN2016092531-appb-000002
型匹配电路。
结合第一方面，在一些可能的实现方式中，所述第二匹配电路为
Figure PCTCN2016092531-appb-000003
型匹配电路。
结合第一方面，在一些可能的实现方式中，所述第二匹配电路为基于所述
Figure PCTCN2016092531-appb-000004
型匹配电路的拓扑电路。
结合第一方面，在一些可能的实现方式中，所述第三匹配电路为
Figure PCTCN2016092531-appb-000005
型匹配电路。
结合第一方面，在一些可能的实现方式中，所述第三匹配电路为基于所述
Figure PCTCN2016092531-appb-000006
型匹配电路的拓扑电路。
结合第一方面，在一些可能的实现方式中，所述
Figure PCTCN2016092531-appb-000007
型匹配电路包括一个可程控电感器和分别连接在所述可程控电感器两端的可程控电容器。
结合第一方面，在一些可能的实现方式中，所述基于所述
Figure PCTCN2016092531-appb-000008
型匹配电路的拓扑电路包括至少两个可程控电感器和分别连接在所述可程控电感器两端的可程控电容器。
结合第一方面，在一些可能的实现方式中，所述双工器为可程控双工器。
结合第一方面，在一些可能的实现方式中，所述滤波器为可程控滤波器。
本申请第二方面提供了一种基于本申请第一实施例及本申请第一实施例任一方面所述的射频发射电路的射频发射电路控制方法，包括：
中央处理器获取射频发射电路的当前工作频段；所述中央处理器向所述匹配控制模块发送携带所述当前工作频段的控制指令；所述匹配控制模块提取所述控制指令中的当前工作频段；以及，所述匹配控制模块基于所述当前工作频段以及基于预存的工作频段与第二匹配电路、双工器、滤波器和第三匹配电路的工作参数的映射关系，调整所述第二匹配电路、所述双工器、所述滤波器和所述第三匹配电路的工作参数，以使调整后的所述第二匹配电路、所述双工器、所述滤波器和所述第三匹配电路的工作参数与所述射频发射电路的当前工作频段匹配。
本申请第三实方面提供了一种基于本申请第一实施例及本申请第一实施例任一方面所述的射频发射电路的移动终端。
本申请实施例还提供一种非瞬时性计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行上述方法。可以看出，本申请实施例技术方案中，中央处理器获取射频发射电路的当前工作频段，所述中央处理器向所述匹配控制模块发送携带所述当前工作频段的控制指令，以使所述匹配控制模块提取所述控制指令中的当前工作频段，并基于所述当前工作频段以及基于预存的工作频段与第二匹配电路、双工器、滤波器、第三匹配电路的工作参数的映射关系，调整所述第二匹配电路、所述双工器、所述滤波器以及所述第三匹配电路的工作参数，以使调整后的所述第二匹配电路、所述双工器、所述滤波器以及所述第三匹配电路的工作参数与所述射频发射电路的当前工作频段匹配。从而避免了相关技术中，在功率放大器前端需要添加多个匹配电路与射频电路的不同工作频段匹配，进而有利于减小射频电路PCB空间、降低射频电路PCB布线难度。
附图说明
图1是本申请第一实施例提供的一种射频发射电路的结构示意图；
图2是本申请第二实施例提供的一种射频发射电路的结构示意图；
图3是本申请第三实施例提供的一种射频发射电路控制方法的结构示意图；
图4是本申请第四实施例提供的一种移动终端的结构示意图。
具体实施方式
以下所描述的实施例是本申请一部分实施例，而不是全部的实施例。本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等是用于区别不同对象，而不是用于描述特定顺序。此外，“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、***、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其他步骤或单元。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
请参阅图1，图1是本申请第一实施例提供的一种射频发射电路的结构示意图，如图1所示，本申请实施例中的射频发射电路包括以下模块：
射频收发机WTR、中央处理器CPU、第一匹配电路、功率放大器PA、第二匹配电路、匹配控制模块、第一开关SP2T1、双工器、滤波器、第二开关SP2T2、第三匹配电路、耦合器以及天线；
可选的，天线作用是将高频电磁波转化为高频信号电流；第三匹配电路用于主要是完成主板与天线之间的功率匹配，以使天线的效率尽可能高；
在采用频分双工(FDD)技术的模拟的移动通信设备(如ETACS手机、对讲机)和CDMA手机、FDD WCDMA手机中，天线电路部分通常采用双工器(DUP、DUPLEX)来分离接收、发射射频信号。双工器，也叫双工滤波器，它是一种无源器件，内部包括发射滤波器和接收滤波器，它们都是带通滤波器，作用是将接收射频信号与发射射频信号分离，以防止强的发射信号对接收机造成影响。由于发射信号总是比接收信号强，而强信号对弱信号有抑制作用，会 使接收电路被强信号阻塞，使接收的弱信号被淹没，引起接收灵敏度下降。所以接收滤波器就是阻止发射信号串入接收电平，也有一并拒收天线接收到的接收频段以外的信号；而发射滤波器则拒绝接收频率段的噪声功率及发射调制信号。
射频收发机WTR是射频电路的核心部件，主要完成射频信号的调整与解调。
其中，本申请实施例中的射频发射电路的连接关系是：
所述射频收发机的第一端口与所述耦合器的第一端口连接，所述射频收发机的第二端口与所述第一匹配电路的第一端口连接，所述射频收发机的第三端口与所述中央处理器的第三端口连接；所述中央处理器的第一端口与所述功率放大器的第一端口连接，所述中央处理器的第二端口与所述匹配控制模块的第二端口连接；所述第一匹配电路的第二端口与所述功率放大器的第二端口连接；所述功率放大器的第三端口与所述第二匹配电路的第三端口连接；所述第二匹配电路的第一端口与所述匹配控制模块的第一端口连接，所述第二匹配电路的第二端口与所述第一开关的第二端口连接；所述第一开关的第一端口与所述双工器的第一端口连接，所述第一开关的第三端口与所述滤波器的第一端口连接；所述双工器的第二端口与所述匹配控制模块的第三端口连接，所述双工器的第三端口与所述第二开关的第一端口连接；所述滤波器的第二端口与所述匹配控制模块的第四端口连接；所述滤波器的第三端口与所述第二开关的第二端口连接；所述第二开关的第三端口与所述第三匹配电路的第一端口连接；所述第三匹配电路的第二端口与所述匹配控制模块的第五端口连接，所述第三匹配电路的第三端口与所述耦合器的第二端口连接；所述耦合器的第三端口与所述天线进行连接。
其中，中央处理器获取射频发射电路的当前工作频段，所述中央处理器向所述匹配控制模块发送携带所述当前工作频段的控制指令，以使所述匹配控制模块提取所述控制指令中的当前工作频段，并基于所述当前工作频段以及基于预存的工作频段与第二匹配电路、双工器、滤波器和第三匹配电路的工作参数的映射关系，调整所述第二匹配电路、所述双工器、所述滤波器以及所述第三匹配电路的工作参数，以使调整后的所述第二匹配电路、所述双工器、所述滤波器和所述第三匹配电路的工作参数与所述射频发射电路的当前工作频段匹配。
可选的，功率放大器PA的输出端连接第二匹配电路，所述第二匹配电路 采用可程控的电容电感作为匹配位的调试器件，并且可以使用双L型匹配电路，以满足射频调试的多元性需求，其中，双工器和滤波器也同样可以采用可程控的带宽可选、频段可选的双工器和滤波器，以实现使用一个双工器和滤波器即可实现不同频段的滤波调试工作，并且通过单刀双掷(SP2T)开关进行时分和频分不同频段的切换，与传统的射频发射电路相比，本申请实施例中的射频发射电路在传统的射频电路中增加一个模块，即匹配控制模块，来实现不同频段匹配电容值和电感值的选择，中央处理器CPU控制匹配控制芯片进行匹配电容值和电感值的选择，双工器和滤波器后端也采用可程控电容电感，并且同样使用双L型匹配电路来满足电路多元性的需求。
在建立工作频段与第二匹配电路、双工器、滤波器和第三匹配电路的工作参数的映射关系，调整所述第二匹配电路、所述双工器、所述滤波器以及所述第三匹配电路的工作参数的映射关系的过程，即调试电容电感的匹配值的选择，可以通过以下的方法进行测试选取，由于射频发射电路基本关注的是PA最大增益下的射频性能，所以在选择通路电容电感值时，对于一个固定的频段，选择几组不同的RGI值(RF gain index)，RGI值用于控制WTR的发射功率)，在每组固定的RGI值下，控制PA以最大增益发射，通过匹配控制模块进行匹配电容电感值的不同组合配置，同时输出最终的射频最大输出功率值，将每组RGI值中最大的三个输出功率的电容电感组合取出，并与其他RGI值的电容电感组合进行对比，选择最佳的一组电容电感值作为射频发射通路的匹配值，最终实现不同频段发射通路中电容电感匹配值的自动选择并建立工作频段与第二匹配电路、双工器、滤波器和第三匹配电路的工作参数的映射关系，调整所述第二匹配电路、所述双工器、所述滤波器以及所述第三匹配电路的工作参数的映射关系。
可以看出，本申请实施例技术方案中，中央处理器获取射频发射电路的当前工作频段，所述中央处理器向所述匹配控制模块发送携带所述当前工作频段的控制指令，以使所述匹配控制模块提取所述控制指令中的当前工作频段，并基于所述当前工作频段以及基于预存的工作频段与第二匹配电路、双工器、滤波器和第三匹配电路的工作参数的映射关系，调整所述第二匹配电路、所述双工器、所述滤波器以及所述第三匹配电路的工作参数，以使调整后的所述第二匹配电路、所述双工器、所述滤波器和所述第三匹配电路的工作参数与所述射频发射电路的当前工作频段匹配。从而避免了相关技术中，在功率放大器前端需要添加多个匹配电路与射频电路的不同工作频段匹配，进而有利于减小射频 电路PCB空间、降低射频电路PCB布线难度。
请参阅图2，图2是本申请第二实施例提供的一种射频发射电路的结构示意图，如图2所示，本申请实施例中的射频发射电路是在图1所示的射频发射电路的基础上发展得到的。
可选的，本申请一些实施例中，所述第一开关、所述第二开关为单刀双置开关。
可选的，本申请一些实施例中，所述第一匹配电路为
Figure PCTCN2016092531-appb-000009
型匹配电路。
可选的，本申请一些实施例中，所述第二匹配电路为
Figure PCTCN2016092531-appb-000010
型匹配电路或基于所述
Figure PCTCN2016092531-appb-000011
型匹配电路的拓扑电路。
可选的，本申请一些实施例中，所述第三匹配电路为
Figure PCTCN2016092531-appb-000012
型匹配电路或基于所述
Figure PCTCN2016092531-appb-000013
型匹配电路的拓扑电路。
可选的，本申请一些实施例中，所述
Figure PCTCN2016092531-appb-000014
型匹配电路包括一个可程控电感器和分别连接在所述可程控电感器两端的可程控电容器，所述基于所述
Figure PCTCN2016092531-appb-000015
型匹配电路的拓扑电路包括至少两个可程控电感器和分别连接在所述可程控电感器两端的可程控电容器。
可选的，本申请一些实施例中，所述双工器为可程控双工器。
可选的，本申请一些实施例中，所述滤波器为可程控滤波器。
可以看出，本申请实施例技术方案中，中央处理器获取射频发射电路的当前工作频段，所述中央处理器向所述匹配控制模块发送携带所述当前工作频段的控制指令，以使所述匹配控制模块提取所述控制指令中的当前工作频段，并基于所述当前工作频段以及基于预存的工作频段与第二匹配电路、双工器、滤波器和第三匹配电路的工作参数的映射关系，调整所述第二匹配电路、所述双工器、所述滤波器以及所述第三匹配电路的工作参数，以使调整后的所述第二匹配电路、所述双工器、所述滤波器和所述第三匹配电路的工作参数与所述射频发射电路的当前工作频段匹配。从而避免了相关技术中，在功率放大器前端需要添加多个匹配电路与射频电路的不同工作频段匹配，进而有利于减小射频电路PCB空间、降低射频电路PCB布线难度。
请参阅图3，图3是本申请第三实施例提供的一种射频发射电路控制方法的流程示意图，如图3所示，本申请实施例中的射频发射电路控制方法是基于图1 至图2所示的射频发射电路。
在S310中，中央处理器获取射频发射电路的当前工作频段。
在S320中，所述中央处理器向所述匹配控制模块发送携带所述当前工作频段的控制指令。
在S330中，所述匹配控制模块提取所述控制指令中的当前工作频段。
在S340中，所述匹配控制模块基于所述当前工作频段以及基于预存的工作频段与第二匹配电路、双工器、滤波器、第三匹配电路的工作参数的映射关系，调整所述第二匹配电路、所述双工器、所述滤波器以及所述第三匹配电路的工作参数，以使调整后的所述第二匹配电路、所述双工器、所述滤波器、所述第三匹配电路的工作参数与所述射频发射电路的当前工作频段匹配。
可以看出，本申请实施例技术方案中，中央处理器获取射频发射电路的当前工作频段，所述中央处理器向所述匹配控制模块发送携带所述当前工作频段的控制指令，以使所述匹配控制模块提取所述控制指令中的当前工作频段，并基于所述当前工作频段以及基于预存的工作频段与第二匹配电路、双工器、滤波器和第三匹配电路的工作参数的映射关系，调整所述第二匹配电路、所述双工器、所述滤波器以及所述第三匹配电路的工作参数，以使调整后的所述第二匹配电路、所述双工器、所述滤波器和所述第三匹配电路的工作参数与所述射频发射电路的当前工作频段匹配。从而避免了相关技术中，在功率放大器前端需要添加多个匹配电路与射频电路的不同工作频段匹配，进而有利于减小射频电路PCB空间、降低射频电路PCB布线难度。
本申请实施例还提供了一种移动终端，所述移动终端包括本申请图1或图2所示的射频发射电路。如图4所示，为了便于说明，仅示出了与本申请实施例相关的部分，技术细节未揭示的，请参照本申请实施例方法部分。该移动终端可以为包括手机、平板电脑、PDA(Personal Digital Assistant，个人数字助理)、POS(Point of Sales，销售终端)和车载电脑等任意一种终端设备，以移动终端为手机为例：
图4示出的是与本申请实施例提供的移动终端相关的手机的部分结构的框图。参考图4，手机包括：本申请第一实施例中红的射频发射(Radio Frequency，RF)电路410、存储器420、输入单元430、显示单元440、传感器450、音频电路460、无线保真(Wireless Fidelity，Wi-Fi)模块470、处理器480、以及电源490 等部件。本领域技术人员可以理解，图4中示出的手机结构并不构成对手机的限定，可以包括比图示更多或更少的部件，或者组合一些部件，或者不同的部件布置。
下面结合图4对手机的各个构成部件进行介绍：
RF电路410可用于信息的接收和发送。通常，RF电路410包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器(Low Noise Amplifier，LNA)以及双工器等。此外，RF电路410还可以通过无线通信与网络和其他设备通信。上述无线通信可以使用任一通信标准或协议，包括但不限于全球移动通讯***(Global System of Mobile communication，GSM)、通用分组无线服务(General Packet Radio Service，GPRS)、码分多址(Code Division Multiple Access，CDMA)、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)、长期演进(Long Term Evolution，LTE)、电子邮件以及短消息服务(Short Messaging Service，SMS)等。
存储器420可用于存储软件程序以及模块，处理器480通过运行存储在存储器420的软件程序以及模块，从而执行手机的各种功能应用以及数据处理。存储器420可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作***和至少一个功能所需的应用程序(数据获取功能、数据比对功能等)等；存储数据区可存储根据手机的使用所创建的数据(比如全局音效参数和应用层级音效参数等)等。此外，存储器420可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、和其他易失性固态存储器件。
输入单元430可用于接收输入的数字或字符信息，以及产生与手机的用户设置以及功能控制有关的键信号输入。可选的，输入单元430可包括指纹识别模组、物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标和操作杆等中的一种或多种。
显示单元440可用于显示由用户输入的信息或提供给用户的信息以及手机的各种菜单。显示单元440可包括显示屏441，可选的，可以采用液晶显示器(Liquid Crystal Display，LCD)或有机发光二极管(Organic Light-Emitting Diode，OLED)等形式来配置显示屏441。
手机还可包括至少一种传感器450，比如光传感器、运动传感器以及其他传感器。可选的，光传感器可包括环境光传感器及接近传感器，其中，环境光传 感器可根据环境光线的明暗来调节显示屏441的亮度，接近传感器可在手机移动到耳边时，关闭显示屏441和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别手机姿态的应用(比如横竖屏切换、相关游戏以及磁力计姿态校准)和振动识别相关功能(比如计步器、敲击)等；至于手机还可配置的陀螺仪、气压计、湿度计、温度计和红外线传感器等其他传感器，在此不再赘述。
音频电路460、扬声器461和传声器462可提供用户与手机之间的音频接口。音频电路460可将接收到的音频数据转换后的电信号，传输到扬声器461，由扬声器461转换为声音信号播放；第二方面，传声器462将收集的声音信号转换为电信号，由音频电路460接收后转换为音频数据，再将音频数据播放处理器480处理后，经RF电路410以发送给比如其他手机，或者将音频数据播放至存储器420以便处理。
Wi-Fi属于短距离无线传输技术，手机通过Wi-Fi模块470可以帮助用户收发电子邮件、浏览网页和访问流式媒体等，它为用户提供了无线的宽带互联网访问。虽然图4示出了Wi-Fi模块470，但是可以理解的是，并不属于手机的必须构成，完全可以根据需要在不改变申请的本质的范围内而省略。
处理器480是手机的控制中心，利用各种接口和线路连接整个手机的各个部分，通过运行或执行存储在存储器420内的软件程序和/或模块，以及调用存储在存储器420内的数据，执行手机的各种功能和处理数据，从而对手机进行整体监控。可选的，处理器480可包括一个或多个处理单元；可选的，处理器480可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作***、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器480中。
手机还包括给各个部件供电的电源490(比如电池)，可选的，电源可以通过电源管理***与处理器480逻辑相连，从而通过电源管理***实现管理充电、放电以及功耗管理等功能。
尽管未示出，手机还可以包括摄像头和蓝牙模块等，在此不再赘述。
本申请实施例还提供一种计算机存储介质，其中，该计算机存储介质可存储有程序，该程序执行时包括上述方法实施例中记载的任何一种服务进程的监控方法的部分或全部步骤。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本申请并不受所描述的动作顺序的限制，因为依据本申请，一些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于可选实施例，所涉及的动作和单元并不一定是本申请所必须的。
本申请实施例的方法的步骤顺序可以根据实际需要进行调整、合并或删减。本申请实施例的终端的单元可以根据实际需要进行整合、划分或删减。
在上述实施例中，对各个实施例的描述都各有侧重，实施例中没有详述的部分，可以参见其他实施例的相关描述。
在本申请所提供的几个实施例中，应该理解所揭露的装置可通过其它的方式实现。例如，以上所描述的装置实施例是示意性的，例如所述单元的划分为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到其他***，或一些特征可以忽略，或不执行。所显示或讨论的相互之间的耦合或直接耦合或通信连接也可以是通过一些接口、装置或单元的间接耦合或通信连接，可以是电性或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可为个人计算机、服务器或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储 程序代码的介质。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质可以包括：闪存盘、只读存储器(英文：Read-Only Memory，简称：ROM)、随机存取器(英文：Random Access Memory，简称：RAM)、磁盘或光盘等。
对于本领域的一般技术人员，依据本申请的思想，在实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。
工业实用性
本申请实施例提供的射频发射电路、控制方法及移动终端，从而避免了相关技术中在功率放大器前端需要添加多个匹配电路与射频电路的不同工作频段匹配，进而有利于减小射频电路PCB空间、降低射频电路PCB布线难度。

Claims (14)

  1. 一种射频发射电路，包括：
    射频收发机、中央处理器、第一匹配电路、功率放大器、第二匹配电路、匹配控制模块、第一开关、双工器、滤波器、第二开关、第三匹配电路、耦合器以及天线；
    其中，所述射频收发机的第一端口与所述耦合器的第一端口连接，所述射频收发机的第二端口与所述第一匹配电路的第一端口连接，所述射频收发机的第三端口与所述中央处理器的第三端口连接；
    所述中央处理器的第一端口与所述功率放大器的第一端口连接，所述中央处理器的第二端口与所述匹配控制模块的第二端口连接；所述第一匹配电路的第二端口与所述功率放大器的第二端口连接；所述功率放大器的第三端口与所述第二匹配电路的第三端口连接；
    所述第二匹配电路的第一端口与所述匹配控制模块的第一端口连接，所述第二匹配电路的第二端口与所述第一开关的第二端口连接；
    所述第一开关的第一端口与所述双工器的第一端口连接，所述第一开关的第三端口与所述滤波器的第一端口连接；
    所述双工器的第二端口与所述匹配控制模块的第三端口连接，所述双工器的第三端口与所述第二开关的第一端口连接；
    所述滤波器的第二端口与所述匹配控制模块的第四端口连接；所述滤波器的第三端口与所述第二开关的第二端口连接；
    所述第二开关的第三端口与所述第三匹配电路的第一端口连接；
    所述第三匹配电路的第二端口与所述匹配控制模块的第五端口连接，所述第三匹配电路的第三端口与所述耦合器的第二端口连接；
    所述耦合器的第三端口与所述天线进行连接。
  2. 如权利要求1所述的射频发射电路，其中，所述第一开关和所述第二开关为单刀双置开关。
  3. 如权利要求1所述的射频发射电路，其中，所述第一匹配电路为
    Figure PCTCN2016092531-appb-100001
    型匹配电路。
  4. 如权利要求1所述的射频发射电路，其中，所述第二匹配电路为
    Figure PCTCN2016092531-appb-100002
    型匹 配电路。
  5. 如权利要求1所述的射频发射电路，其中，所述第二匹配电路为基于所述
    Figure PCTCN2016092531-appb-100003
    型匹配电路的拓扑电路。
  6. 如权利要求1所述的射频发射电路，其中，所述第三匹配电路为
    Figure PCTCN2016092531-appb-100004
    型匹配电路。
  7. 如权利要求1所述的射频发射电路，其中，所述第三匹配电路为基于所述
    Figure PCTCN2016092531-appb-100005
    型匹配电路的拓扑电路。
  8. 如权利要求4或6所述的射频发射电路，其中，所述
    Figure PCTCN2016092531-appb-100006
    型匹配电路包括一个可程控电感器和分别连接在所述可程控电感器两端的可程控电容器。
  9. 如权利要求5或7所述的射频发射电路，其中，所述基于所述
    Figure PCTCN2016092531-appb-100007
    型匹配电路的拓扑电路包括至少两个可程控电感器和分别连接在所述可程控电感器两端的可程控电容器。
  10. 如权利要求1所述的射频发射电路，其中，所述双工器为可程控双工器。
  11. 如权利要求1所述的射频发射电路，其中，所述滤波器为可程控滤波器。
  12. 一种射频发射电路控制方法，包括：
    中央处理器获取射频发射电路的当前工作频段；
    所述中央处理器向所述匹配控制模块发送携带所述当前工作频段的控制指令；
    所述匹配控制模块提取所述控制指令中的当前工作频段；以及，
    所述匹配控制模块基于所述当前工作频段以及基于预存的工作频段与第二匹配电路、双工器、滤波器和第三匹配电路的工作参数的映射关系，调整所述第二匹配电路、所述双工器、所述滤波器和所述第三匹配电路的工作参数，以 使调整后的所述第二匹配电路、所述双工器、所述滤波器和所述第三匹配电路的工作参数与所述射频发射电路的当前工作频段匹配。
  13. 一种移动终端，其中，包括如权利要求1-11任一项所述的射频发射电路。
  14. 一种非瞬时性计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令设置为执行权利要求12的方法。
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