Radio frequency circuit, control method of radio frequency circuit and electronic equipment

Abstract

The embodiment of the invention discloses a radio frequency circuit, a control method of the radio frequency circuit and electronic equipment. The transmitting power and the radio frequency signal quality of the electronic equipment can be improved. The radio frequency circuit comprises a control module which is used for controlling a signal generator to synchronously input a single-path radio frequency signal to a plurality of radio frequency branches under the condition that the signal generator generates the single-path radio frequency signal; the power amplification module is used for amplifying the single-path radio frequency signal on the radio frequency branch and outputting a single-path radio frequency amplification signal; the control module is also used for communicating the power amplification modules and the signal combination modules of the plurality of radio frequency branches by controlling the first switch in each radio frequency branch; connecting the signal merging module with a target antenna on a target radio frequency branch in the plurality of radio frequency branches by controlling a second switch in each radio frequency branch; and the signal combining module is used for combining the plurality of single-path radio frequency amplification signals of the plurality of radio frequency branches and outputting a radio frequency combined amplification signal to a target antenna for signal emission.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a radio frequency circuit, a control method for a radio frequency circuit, and an electronic device. Background Art

[0002] At present, users need to exchange more and more data through mobile communications. In order to ensure the quality of data transmission, the transmission power of electronic devices needs to be increased to cope with weak signals or high data transmission delays. However, the amplification capacity of electronic devices in electronic devices is limited. To improve the amplification capacity of electronic devices such as power amplifiers, it is necessary to solve multi-level and difficult problems such as transistor design materials and power amplifier design methods, which restricts the increase in transmission power, that is, reduces the transmission power of electronic devices, and thus reduces the quality of RF signals on electronic devices. Summary of the invention

[0003] The embodiments of the present application are intended to provide a radio frequency circuit, a control method for a radio frequency circuit, and an electronic device, which can improve the transmission power and radio frequency signal quality of the electronic device.

[0004] The technical solution of this application is implemented as follows:

[0005] The embodiment of the present application provides a radio frequency circuit, including: a signal generator, a signal merging module, a plurality of radio frequency branches and a control module; each of the plurality of radio frequency branches includes: a power amplification module, a first switch, a second switch and an antenna; the first switch is connected to the power amplification module; the second switch is connected to the antenna; the first switch and the second switch are connected through the signal merging module;

[0006] The control module is used for controlling the signal generator to synchronously input the single-channel RF signal to the multiple RF branches when the signal generator generates the single-channel RF signal;

[0007] The power amplifier module is used to amplify the single-channel radio frequency signal on the radio frequency branch and output the single-channel radio frequency amplified signal;

[0008] The control module is further used to connect the power amplification modules of the multiple radio frequency branches with the signal merging module by controlling the first switch in each radio frequency branch; and connect the signal merging module with the target antenna on the target radio frequency branch among the multiple radio frequency branches by controlling the second switch in each radio frequency branch;

[0009] The signal merging module is used to merge the multiple single-channel RF amplified signals of the multiple RF branches, and output the RF combined amplified signal to the target antenna for signal transmission.

[0010] The present application embodiment provides a control method for a radio frequency circuit, which is applied to a control module in the radio frequency circuit provided in the present application embodiment. The method includes:

[0011] When the signal generator generates a single-channel RF signal, the signal generator is controlled to synchronously output the single-channel RF signal to multiple RF branches, so as to amplify the single-channel RF signal through the power amplifier module of each RF branch in the multiple RF branches, and output the RF amplified signal corresponding to each RF branch;

[0012] By controlling the first switch in each RF branch, the power amplification modules of the multiple RF branches are connected to the signal merging module, so that the signal merging module merges the RF amplified signals of the multiple RF branches and outputs the RF combined amplified signal;

[0013] By controlling the second switch in each RF branch, the signal combining module is connected to a target antenna on a target RF branch among the multiple RF branches, so that the RF combined and amplified signal is transmitted through the target antenna.

[0014] An embodiment of the present application provides an electronic device, including: a radio frequency circuit, a memory and a processor provided in an embodiment of the present application, wherein:

[0015] The memory is used to store executable instructions;

[0016] The processor is used to implement the control method of the radio frequency circuit according to any one of claims 11 to 13 based on the radio frequency circuit when executing the executable instructions stored in the memory.

[0017] An embodiment of the present application provides a computer-readable storage medium storing executable instructions for causing a processor to execute and implement the control method of the radio frequency circuit provided in the embodiment of the present application.

[0018] An embodiment of the present application provides a computer program product, including a computer program or instructions, which, when executed by a processor, implements the radio frequency circuit method provided in the embodiment of the present application.

[0019] The embodiments of the present application provide a radio frequency circuit, a control method for a radio frequency circuit, and an electronic device. When a signal generator generates a single-channel radio frequency signal, the control module controls the signal generator to synchronously output the single-channel radio frequency signal to multiple radio frequency branches. By controlling the on and off of the first switch and the second switch in each radio frequency branch, the power amplifier modules, the signal merging modules, and the antennas on the target radio frequency branches of the multiple radio frequency branches are connected, so that the radio frequency amplified signals obtained by amplification by the power amplifier modules on the multiple radio frequency branches can be merged through the signal merging module, that is, the radio frequency amplified signals are multiplied several times to obtain a radio frequency combined amplified signal, and the radio frequency combined amplified signal is transmitted through the target antenna. Therefore, by synchronously inputting a single-channel radio frequency signal to multiple radio frequency branches and amplifying and merging them, the transmission power of the radio frequency circuit is greatly improved, thereby improving the transmission power and radio frequency signal quality of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the current RF circuit structure diagram;

[0021] Figure 2 A schematic diagram of a radio frequency circuit provided in an embodiment of the present application Figure 1 ;

[0022] Figure 3 A schematic diagram of a radio frequency circuit provided in an embodiment of the present application Figure 2 ;

[0023] Figure 4 A schematic diagram of a radio frequency circuit provided in an embodiment of the present application Figure 3 ;

[0024] Figure 5 A schematic diagram of a radio frequency circuit provided in an embodiment of the present application Figure 4 ;

[0025] Figure 6 A schematic diagram of a radio frequency circuit provided in an embodiment of the present application Figure 5 ;

[0026] Figure 7 A schematic diagram of a flow chart of a method for controlling a radio frequency circuit provided in an embodiment of the present application;

[0027] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0029] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0030] In the following description, the terms "first\second\third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0032] The nouns and terms involved in the embodiments of the present application are explained. The nouns and terms involved in the embodiments of the present application are applicable to the following interpretations:

[0033] 1. Dual-Connectivity (EUTRA NR Dual-Connectivity, ENDC);

[0034] 2. Long Term Evolution (3GPP 4G technology (Long Term Evolution, LTE);

[0035] 3. Standalone (SA);

[0036] 4. Power amplifier (PA);

[0037] 5. Single Pole Double Throw (SPDT);

[0038] 6. Transmitter (TX);

[0039] 7. Software Defined Radio (SDR) uses digital signal processing technology to define and implement various functions of wireless terminals on a general hardware platform with programmable control, including front-end reception, intermediate frequency processing, and baseband signal processing. That is, the entire wireless terminal, from high frequency, intermediate frequency, baseband to control protocol, is completed by software programming.

[0040] At present, most electronic devices, such as terminals, already support dual transmit channels (2TX) or dual connection combinations. The corresponding transmit circuit architecture of the RF circuit can be as follows: Figure 1 As shown. The signal generator is equipped with dual signal output ports, each of which corresponds to each transmission channel in 2TX or each standard in the ENDC combination. In single-channel transmission, if the terminal only sends LTE / SA only signals, or only enables one of the dual transmission channels (1TX) to transmit RF signals, the signal generator outputs RF signals to the corresponding one of the dual output ports, amplifies the RF signal through the power amplifier (PA) connected to the output port, and then transmits the amplified RF signal through the antenna of the same channel, while the other PA will be in an inoperative state.

[0041] It can be seen that when current electronic devices are transmitting in a single channel, the transmission power of the RF circuit cannot be improved due to the limited amplification capability of the PA, which reduces the transmission power and RF signal quality of the electronic device. Improving the amplification capability of the PA is restricted by various factors of materials and PA design, and the cost and complexity are high.

[0042] The embodiments of the present application provide a radio frequency circuit, a control method of the radio frequency circuit, and an electronic device, which can improve the transmission power and radio frequency signal quality of the electronic device. The radio frequency circuit of the embodiments of the present application is applied to an electronic device, which can be a terminal or a server, such as a base station. Figure 2 , Figure 2 It is an optional structural diagram of the radio frequency circuit provided in an embodiment of the present application.

[0043] like Figure 2 As shown, the radio frequency circuit 1 provided in the embodiment of the present application includes: a signal generator 10, a signal merging module 11, a plurality of radio frequency branches (such as Figure 2 The RF branches 12-1, 12-2 to 12-n shown in the figure, where n is the number of the multiple RF branches) and a control module 13; each of the multiple RF branches includes: a power amplification module (such as Figure 2 The power amplification modules 120-1, 120-2 to 120-n shown in FIG. 1 ), the first switch (such as Figure 2The first switches 121-1, 121-2 to 121-n shown in FIG. 1 ), the second switch 122 (as shown in FIG. Figure 2 The second switches 122-1, 122-2 to 122-n) shown in FIG. Figure 2 Antennas 123-1, 123-2 to 123-n are shown); wherein the first switch of each RF branch is connected to the power amplifier module of the RF branch; the second switch of each RF branch is connected to the antenna of the RF branch; the first switch 121 of each RF branch and the second switch 122 of each RF branch are connected through a signal merging module 11.

[0044] The control module 13 is used to control the signal generator 10 to synchronously input the single-channel RF signal to multiple RF branches when the signal generator 10 generates a single-channel RF signal;

[0045] The power amplifier module on each radio frequency branch is used to amplify the single-channel radio frequency signal on the radio frequency branch and output the single-channel radio frequency amplified signal;

[0046] The control module 13 is further used to connect the power amplification modules of multiple radio frequency branches with the signal merging module by controlling the first switch in each radio frequency branch; and connect the signal merging module with the target antenna on the target radio frequency branch among the multiple radio frequency branches by controlling the second switch in each radio frequency branch;

[0047] The signal combining module 11 is used to combine multiple single-channel RF amplified signals of multiple RF branches, and output the RF combined amplified signal to the target antenna for signal transmission.

[0048] In an embodiment of the present application, a signal generator is used to generate a radio frequency signal. Multiple radio frequency branches are connected to multiple output ports of the signal generator, and the multiple output ports correspond to the multiple radio frequency branches one by one. The signal generator can generate a single radio frequency signal or a multi-channel radio frequency signal. In some embodiments, the signal generator can be an SDR.

[0049] In an embodiment of the present application, when the signal generator generates a single-channel RF signal, the control module controls the signal generator to synchronously input the single-channel RF signal to each of the multiple RF branches. Exemplarily, the signal generator is controlled to synchronously output the single-channel RF signal from multiple output ports, and the single-channel RF signal of each output port enters the corresponding RF branch of the multiple RF branches, thereby equivalent to converting a single-channel RF signal into multiple single-channel RF signals of the same power.

[0050] In some embodiments, the multiple RF branches include: dual transmission channels or dual connection channels supported by the electronic device. The specific selection is made according to the actual situation, and the embodiments of the present application are not limited. In the embodiments of the present application, the power amplifier module on each RF branch amplifies the single-channel RF signal input to the RF branch and outputs the single-channel RF amplified signal of the RF branch. It can be understood that the multiple power amplifier modules on the multiple RF branches can output multiple single-channel RF amplified signals.

[0051] In some embodiments, the power amplifier module may include a PA. Exemplarily, each power amplifier module may include at least one PA for performing at least one power amplification on a single-channel RF signal on a corresponding RF branch. The amplification capabilities of the power amplifier modules on different RF branches may be the same or different, and are specifically selected according to actual conditions, and are not limited in the embodiments of the present application.

[0052] In an embodiment of the present application, the output end of the power amplifier module of each RF branch in the multiple RF branches is connected to one end of the first switch of the RF branch, and the other end of the first switch is connected to the input end of the signal merging module, and the first switches on each RF branch are in parallel. That is to say, the power amplifier module of each RF branch is connected to the first switch of the RF branch, and the first switch of each RF branch is connected to the input end of the signal merging module. In this way, the control module can connect the power amplifier modules of multiple RF branches with the signal merging module by controlling the first switch of each RF branch to be turned on, so that multiple single-channel RF amplified signals output by multiple power amplifier modules of multiple RF branches can be input into the signal merging module. The signal merging module merges multiple single-channel RF amplified signals, so that the signal power is doubled, and the RF combined amplified signal is output.

[0053] In some embodiments, the signal merging module includes: a combiner, a power splitter or other software and hardware modules with signal merging capabilities. The specific selection is made according to the actual situation and is not limited in the embodiments of the present application.

[0054] In an embodiment of the present application, the output end of the signal merging module is respectively connected to one end of the second switch on each RF branch in a plurality of RF branches, the other end of the second switch on each RF branch is connected to the antenna of the RF branch, and the second switches on each RF branch are in parallel. That is to say, the second switch of each RF branch is connected to the signal merging module, and the second switch of each RF branch is connected to the antenna of the RF branch. In this way, the control module controls the second switch on the target RF branch in a plurality of RF branches to be turned on, and controls the second switch on the non-target RF branch to be turned off, so as to connect the signal merging module with the target antenna on the target RF branch, and transmit the RF combined amplified signal through the target antenna, thereby completing the amplification, merging and transmission of the single-channel RF signal. Among them, the target RF branch can be any RF branch in a plurality of RF branches, and can also be determined according to the performance indicators of the antenna in each RF branch. The specific selection is made according to the actual situation, and the embodiment of the present application is not limited.

[0055] In some embodiments, each of the first switch and the second switch includes: at least two contacts. The at least two contacts include at least: a first contact and a second contact; the first contact and the second contact are used to connect the power amplification module of each RF branch, the signal merging module and the antenna of each RF branch. The control module can control the first switch or the second switch to conduct the first contact and the second contact to achieve the control of the first switch or the second switch to conduct. The control module can control the second switch to turn off by controlling the second switch to turn off the first contact and the second contact.

[0056] It is understandable that, when the signal generator generates a single-channel RF signal, the control module controls the signal generator to synchronously output the single-channel RF signal to multiple RF branches. By controlling the on and off of the first switch and the second switch in each RF branch, the power amplifier modules, signal merging modules and antennas on the target RF branches of the multiple RF branches are connected, so that the single-channel RF amplified signals obtained by amplification by the power amplifier modules on multiple RF branches can be merged through the signal merging module, that is, the single-channel RF amplified signal is multiplied several times to obtain a RF combined amplified signal, and the RF combined amplified signal is transmitted through the target antenna. Therefore, by synchronously inputting a single-channel RF signal to multiple RF branches and amplifying and merging them, the transmission power of the RF circuit is greatly improved, thereby improving the transmission power and RF signal quality of the electronic device.

[0057] In some embodiments, the control module 13 is further configured to determine the transmission signal strength corresponding to the antenna on each RF branch; and determine the target RF branch based on the transmission signal strength.

[0058] In an embodiment of the present application, the control module can obtain the transmission signal strength of the antenna on each RF branch for signal transmission. Here, the transmission signal strength of the antenna of each RF branch represents the strength of the transmission capability of the antenna. In this way, the control module can determine the target RF branch from multiple RF branches based on the corresponding transmission signal strength of each RF branch, so as to use the target antenna on the target RF branch to transmit the RF combined amplified signal.

[0059] In some embodiments, the control module may determine that the RF branch corresponding to the antenna with the largest transmitted signal strength is the target RF branch. Other antenna indicators may also be comprehensively considered, and the transmitted signal strength and other antenna indicators may be weightedly evaluated to determine the target RF branch. The specific selection is made according to the actual situation, and the embodiments of the present application are not limited thereto.

[0060] It can be understood that by determining the target RF branch based on the transmission signal strength, a target antenna with stronger antenna transmission capability can be selected from multiple RF branches to transmit the RF combined amplified signal, thereby further improving the transmission power and RF signal quality of the electronic device.

[0061] In some embodiments, the first switch and the second switch on each RF branch are multi-channel conduction switches; in this way, the RF circuit of the embodiment of the present application can also be compatible with the transmission of multi-channel RF signals on the basis of supporting the amplification of a single-channel RF signal. Exemplarily, at least two contacts of each switch in the first switch and the second switch can also include: a third contact. In other words, each switch in the first switch and the second switch can include a first contact, a second contact and a third contact; that is, the first switch is a switch with three contacts, and the second switch is also a switch with three contacts. Among them, the first contact is a fixed end, and the second contact and the third contact are selectively conductive. That is, the conductive state of the first switch and the second switch includes: conductive between the first contact and the second contact, or conductive between the first contact and the third contact; and the first contact and the second contact, and the first contact and the third contact are not conductive at the same time.

[0062] In some embodiments, the first switch and / or the second switch may be a SPDT switch, wherein the first contact is a fixed end of the SPDT switch, and the second contact and the third contact are movable ends of the SPDT switch.

[0063] In some embodiments, based on the above-mentioned switch structure, the first switch and the second switch can connect the power amplifier module of each RF branch, the signal merging module and the antenna of each RF branch through the first contact and the second contact, so as to conduct the signal path to amplify, merge and transmit the single RF signal in the case of a single RF signal. The first switch and the second switch can connect the power amplifier module of each RF branch and the antenna of each RF branch through the first contact and the second contact, so as to amplify and transmit each RF signal in the multiple RF signals one by one through each RF branch in the case of multiple RF signals. Exemplarily, the first contact of the first switch is connected to the power amplifier module; the first contact of the second switch is connected to the antenna; and the third contact of the first switch is connected to the third contact of the second switch.

[0064] In some embodiments, the control module 13 is further configured to control the signal generator 10 to input the multiple RF signals into multiple RF branches when the signal generator 10 generates multiple RF signals.

[0065] The power amplifier module on each radio frequency branch is also used to amplify the radio frequency signal on the radio frequency branch and output the radio frequency amplified signal.

[0066] The control module 13 is also used to transmit the RF amplified signal on each RF branch to the antenna of each RF branch by controlling the first switch and the second switch on each RF branch to be turned on between the first contact and the third contact; the antenna of each RF branch is used to transmit the RF amplified signal on the RF branch.

[0067] In the embodiment of the present application, when the signal generator generates multiple RF signals, the control module controls the signal generator to output the multiple RF signals one by one to the output port corresponding to each RF signal, and inputs the RF branch corresponding to each RF signal through the output port corresponding to each RF signal. The RF signal on each RF branch is amplified by the power amplifier module of each RF branch, and the RF amplified signal on each RF branch is output. The control module 13 controls the first switch on each RF branch to be turned on between the first contact and the third contact, and controls the second switch on each RF branch to be turned on between the first contact and the third contact, thereby forming a signal path from the power amplifier module of each RF branch to the antenna of each RF branch, so that the RF amplified signal on the corresponding RF branch can be transmitted through the antenna of each RF branch.

[0068] It can be understood that when the signal generator generates multiple RF signals, the power amplifier module is connected to the antenna by controlling the conduction of the first switch and the second switch contacts without signal merging, thereby not affecting the transmission of the multiple RF signals and improving the flexibility of the RF circuit application.

[0069] In some embodiments, when the signal generator generates at least two RF signals, the control module can also determine a single RF signal that needs to be combined and amplified from the at least two RF signals; control the signal generator to synchronously input the single RF signal to the RF branch corresponding to the single RF signal and the idle RF branch in multiple RF branches; and control the signal generator to input other RF signals other than the single RF signal in the at least two RF signals into the corresponding RF branch. The idle RF branch includes at least one other RF branch other than the at least two RF branches corresponding to the at least two RF signals in the multiple RF branches.

[0070] The power amplifier module on each radio frequency branch is also used to amplify the radio frequency signal or the single-channel radio frequency signal on the radio frequency branch, and output the radio frequency amplified signal or the single-channel radio frequency amplified signal;

[0071] The control module is also used to control the first switch and the second switch on the RF branch corresponding to the single RF signal and the idle RF branch to be turned on at the first contact and the second contact, so as to input at least two single RF amplified signals on the RF branch corresponding to the single RF signal and the idle RF branch into the signal merging module.

[0072] The signal merging module is further used to merge the radio frequency branch corresponding to the single radio frequency signal and at least two single-channel radio frequency amplified signals on the idle radio frequency branch, and output a radio frequency combined amplified signal;

[0073] The control module is also used to determine the target RF branch in the RF branch corresponding to the single RF signal and the idle RF branch, control the first switch and the second switch on the target RF branch to be turned on between the first contact and the second contact, so as to connect the signal path between the target RF branch and the signal merging module, and transmit the RF combined amplified signal output by the signal merging module through the target antenna, thereby completing the amplification, merging and transmission of the single RF signal in at least two RF signals. Here, the process of the control module determining the target RF branch can also be achieved by selecting the RF branch corresponding to the single RF signal and the idle RF branch according to the signal strength of the antenna, which will not be repeated here.

[0074] The control module is also used to control the first switch and the second switch on at least one RF branch among at least two RF branches, except the RF branch corresponding to the single-channel RF signal and the idle RF branch, to be turned on between the first contact and the third contact, thereby connecting the signal path between the power amplifier module of each RF branch in the at least one RF branch and the antenna, and transmitting the RF amplified signal output by the power amplifier module of each RF branch in the at least one RF branch through the antenna corresponding to the RF branch, thereby completing one-to-one corresponding RF signal amplification and transmission.

[0075] It can be understood that when the signal generator generates at least two RF signals corresponding to at least two RF branches among multiple RF branches, a single RF signal can be determined from the at least two RF signals, and the single RF signal can be amplified and merged using the idle RF branch and the signal merging module without affecting the transmission of other RF signals, thereby not only improving the transmission power of the electronic device, but also improving the flexibility of signal processing.

[0076] In some embodiments, the plurality of RF branches include: a first RF branch and a second RF branch. For example, in combination with the structures of the first switch and the second switch, the RF circuit can be as follows: Figure 3 As shown. Among them, the signal generator is SDR; the signal merging module is a combiner, the power amplifier module of the first RF branch is PA1; the first switch of the first RF branch is SPDT1; the first contact, the second contact and the third contact of SPDT1 are s1, s2 and s3 respectively; the second switch of the first RF branch is SPDT2; the first contact, the second contact and the third contact of SPDT2 are s1', s2' and s3' respectively; the antenna of the first RF branch is antenna 1. The power amplifier module of the second RF branch is PA2; the first switch of the second RF branch is SPDT3; the first contact, the second contact and the third contact of SPDT3 are S1, S2 and S3 respectively; the second switch of the second RF branch is SPDT4; the first contact, the second contact and the third contact of SPDT4 are S1', S2' and S3' respectively; the antenna of the second RF branch is antenna 2.

[0077] In some embodiments, the single-channel RF signal includes: a first RF signal corresponding to the first RF branch or a second RF signal corresponding to the second RF branch; wherein,

[0078] The control module is further used to control the signal generator to synchronously input the first RF signal to the first RF branch and the second RF branch when the signal generator generates the first RF signal; or to control the signal generator to synchronously input the second RF signal to the first RF branch and the second RF branch when the signal generator generates the second RF signal;

[0079] A power amplification module, used to amplify the first radio frequency signal or the second radio frequency signal, and output the first radio frequency amplified signal or the second radio frequency amplified signal;

[0080] The control module is further used to control the first switch on the first RF branch and the second RF branch to turn on the first contact and the second contact; control the second switch on the target RF branch to turn on the first contact and the second contact; and control the second switch on the non-target RF branch to turn off the first contact and the second contact;

[0081] The signal merging module is also used to merge the first RF amplified signal on the first RF branch and the first RF amplified signal on the second RF branch, and output the RF combined amplified signal to the target antenna; or, merge the first RF branch and the second RF amplified signal on the second RF branch, and output the RF combined amplified signal to the target antenna.

[0082] In the embodiment of the present application, taking the case where the multiple RF branches are two RF branches as an example, when the signal generator generates a single RF signal corresponding to the first RF branch of the two RF branches, that is, the first RF signal, the control module controls the signal generator to synchronously input the first RF signal to the first RF branch and the second RF branch. The power amplifier module of the first RF branch amplifies the first RF signal and outputs the first RF amplified signal on the first RF branch; the power amplifier module of the second RF branch amplifies the first RF signal and outputs the first RF amplified signal of the second RF branch. Among them, the amplification factor of the first RF signal by the power amplifier module of the first RF branch can be the same as or different from the amplification factor of the first RF signal by the power amplifier module of the second RF branch.

[0083] In an embodiment of the present application, the control module controls the first switch on the first RF branch to turn on the first contact and the second contact; and controls the first switch on the second RF branch to turn on the first contact and the second contact, thereby turning on the signal path from the power amplifier module of the first RF branch to the signal merging module, and turning on the signal path from the power amplifier module of the second RF branch to the signal merging module. The control module determines the target RF branch between the first RF branch and the second RF branch, controls the second switch on the target RF branch to turn on the first contact and the second contact; controls the second switch on the non-target RF branch to turn off the first contact and the second contact, thereby turning on the signal path from the signal merging module to the target antenna. In this way, the signal merging module merges the first RF amplified signal on the first RF branch with the first RF amplified signal on the second RF branch, and the resulting RF combined amplified signal can be turned on to the target antenna for transmission.

[0084] For example, based on Figure 3 , when the signal generator generates the first RF signal corresponding to the first RF branch, the control module controls the signal generator to synchronously input the first RF signal to the first RF branch and the second RF branch. The control module controls SPDT1 to turn on s1 and s2; controls SPDT3 to turn on S1 and S2; taking the target RF branch as the first RF branch as an example, controls SPDT2 to turn on s1' and s2'; controls SPDT4 to turn off S1' and S2'. The signal flow is as follows Figure 4 shown.

[0085] Similarly, when the signal generator generates a single-channel RF signal corresponding to the second RF branch of the two RF branches, that is, the second RF signal, the control module controls the signal generator to synchronously input the second RF signal to the first RF branch and the second RF branch. The power amplifier module of the first RF branch amplifies the second RF signal and outputs the second RF amplified signal on the first RF branch; the power amplifier module of the second RF branch amplifies the second RF signal and outputs the second RF amplified signal of the second RF branch. The control module controls the first switch on the first RF branch to turn on the first contact and the second contact; and controls the first switch on the second RF branch to turn on the first contact and the second contact. The control module determines the target RF branch between the first RF branch and the second RF branch, controls the second switch on the target RF branch to turn on the first contact and the second contact; controls the second switch on the non-target RF branch to turn off the first contact and the second contact, thereby completing the amplification, merging and transmission of the second RF signal.

[0086] For example, based on Figure 3 , when the signal generator generates the second RF signal corresponding to the second RF branch, the control module controls the signal generator to synchronously input the second RF signal to the first RF branch and the second RF branch. The control module controls SPDT1 to turn on s1 and s2; controls SPDT3 to turn on S1 and S2. Taking the target RF branch as the second RF branch as an example, control SPDT2 to turn off s1' and s2'; control SPDT4 to turn on S1' and S2'. The signal flow is as follows Figure 5 shown.

[0087] In some embodiments, the control module is further used to control the signal generator to input the first RF signal to the first RF branch and to input the second RF signal to the second RF branch when the signal generator generates the first RF signal and the second RF signal;

[0088] The control module is further used to control the first switch on the first RF branch and the second RF branch to conduct the first contact and the third contact; and control the second switch on the first RF branch and the second RF branch to conduct the first contact and the third contact;

[0089] The antenna on the first radio frequency branch is used to transmit the first radio frequency amplified signal;

[0090] The antenna on the second radio frequency branch is used to transmit the second radio frequency amplified signal.

[0091] For example, based on Figure 3When the signal generator generates the first RF signal and the second RF signal, the control module controls the signal generator to input the first RF signal to the first RF branch and the second RF signal to the second RF branch. The control module controls SPDT1 to conduct s1 and s3; controls SPDT2 to conduct s1' and s3'; controls SPDT3 to conduct S1 and S3; controls SPDT4 to conduct S1' and S3'. The signal flow is as follows Figure 6 shown.

[0092] It can be understood that the embodiment of the present application, based on the existing RF circuit architecture, only adds a combiner and four SPDT switches to achieve several times the amplification of the transmission power. The circuit is simple and does not affect the function and performance of the original design. While the PA linear amplification efficiency remains unchanged, the transmission power is increased, thereby expanding the coverage range of the mobile phone transmission signal.

[0093] The present application embodiment provides a control method for a radio frequency circuit, which is applied to a control module in any of the above radio frequency circuits. The method includes S101-S103. Figure 7 As shown below:

[0094] S101. When a signal generator generates a single-channel RF signal, control the signal generator to synchronously output the single-channel RF signal to multiple RF branches, so as to amplify the single-channel RF signal through a power amplifier module of each RF branch in the multiple RF branches, and output an RF amplified signal corresponding to each RF branch.

[0095] S102, connecting the power amplification modules of multiple RF branches with the signal merging module by controlling the first switch in each RF branch, so that the signal merging module merges the RF amplified signals of the multiple RF branches and outputs the RF combined amplified signal.

[0096] S103, connecting the signal combining module with a target antenna on a target RF branch among the multiple RF branches by controlling the second switch in each RF branch, so as to transmit the RF combined amplified signal through the target antenna.

[0097] In some embodiments, the first switch of each RF branch connects the power amplification module and the signal merging module; the second switch of each RF branch connects the signal merging module and the antenna; and the power amplification modules of the multiple RF branches and the signal merging module are connected by controlling the first switch in each RF branch, including:

[0098] When the signal generator generates the single-channel radio frequency signal, controlling the first switch of each radio frequency branch to be turned on;

[0099] The method of connecting the signal merging module with a target antenna on a target radio frequency branch among the multiple radio frequency branches by controlling the second switch in each radio frequency branch includes:

[0100] The second switch on the target radio frequency branch is controlled to be turned on, and the second switch on the non-target radio frequency branches among the multiple radio frequency branches is controlled to be turned off.

[0101] In some embodiments, each of the first switch and the second switch includes: a first contact, a second contact, and a third contact; the first contact and the second contact, and the first contact and the third contact are not simultaneously conductive; the first contact and the second contact are used to connect the power amplification module of each RF branch, the signal merging module, and the antenna of each RF branch, and the first contact and the third contact are used to connect the power amplification module of each RF branch and the antenna of each RF branch; the method further includes:

[0102] In the case where the signal generator generates multiple radio frequency signals, the signal generator is controlled to output the multiple radio frequency signals to the multiple radio frequency branches accordingly, so as to amplify the radio frequency signal on each radio frequency branch through the power amplification module of each radio frequency branch, and output the radio frequency amplified signal of each radio frequency branch;

[0103] By controlling the first switch and the second switch on each RF branch to be turned on between the first contact and the third contact, the RF amplified signal on each RF branch is transmitted to the antenna of each RF branch, so that the RF amplified signal on each RF branch is emitted through the antenna of each RF branch.

[0104] In some embodiments, the first contact of the first switch is connected to the power amplification module; the second contact of the first switch is connected to the input end of the signal merging module, and the first contact of the second switch is connected to the antenna; the second contact of the second switch is connected to the output end of the signal merging module; when the signal generator generates the single-channel RF signal, controlling the first switch of each RF branch to be turned on includes:

[0105] Controlling the first switch in each radio frequency branch to be turned on between the first contact and the second contact;

[0106] The controlling the second switch on the target radio frequency branch to be turned on, and controlling the second switch on the non-target radio frequency branch among the multiple radio frequency branches to be turned off, comprises:

[0107] The second switch on the target radio frequency branch is controlled to be turned on between the first contact and the second contact; and the second switch on the non-target radio frequency branch is controlled to turn off the first contact and the second contact.

[0108] In some embodiments, the first contact of the first switch is connected to the power amplification module; the first contact of the second switch is connected to the antenna; and the third contact of the first switch is connected to the third contact of the second switch.

[0109] In some embodiments, before connecting the signal merging module with a target antenna on a target RF branch among the multiple RF branches by controlling the second switch in each RF branch, the method further includes:

[0110] Determine the transmission signal strength corresponding to the antenna on each radio frequency branch;

[0111] The target radio frequency branch is determined according to the transmit signal strength.

[0112] In some embodiments, the method further comprises:

[0113] In the case where the signal generator generates at least two RF signals, a single RF signal is determined from the at least two RF signals; the signal generator is controlled to synchronously input the single RF signal to the RF branch corresponding to the single RF signal among the multiple RF branches and the idle RF branch, and the signal generator is controlled to input the RF signal other than the single RF signal among the at least two RF signals into the corresponding RF branch, so as to amplify the RF signal on the RF branch or the single RF signal through the power amplification module on each RF branch, and output the RF amplified signal or the single RF amplified signal; wherein the idle RF branch includes at least one other RF branch other than the at least two RF branches corresponding to the at least two RF signals among the multiple RF branches;

[0114] Control the first switch and the second switch on the RF branch corresponding to the single RF signal and the idle RF branch to be turned on at the first contact and the second contact, so as to merge the RF branch corresponding to the single RF signal and at least two single RF amplified signals on the idle RF branch through the signal merging module, and output a RF combined amplified signal;

[0115] Determine the target radio frequency branch from the radio frequency branch corresponding to the single radio frequency signal and the idle radio frequency branch, and control the first switch and the second switch on the target radio frequency branch to be turned on between the first contact and the second contact;

[0116] Control the first switch and the second switch on at least one RF branch to be turned on between the first contact and the third contact; the at least one RF branch includes the RF branch of the at least two RF branches except the RF branch corresponding to the single RF signal and the idle RF branch.

[0117] In some embodiments, the multiple RF branches include: a first RF branch and a second RF branch; the single RF signal includes: a first RF signal corresponding to the first RF branch or a second RF signal corresponding to the second RF branch; when the signal generator generates a single RF signal, controlling the signal generator to synchronously input the single RF signal to the multiple RF branches includes:

[0118] When the signal generator generates the first RF signal, the signal generator is controlled to synchronously input the first RF signal to the first RF branch and the second RF branch; or, when the signal generator generates the second RF signal, the signal generator is controlled to synchronously input the second RF signal to the first RF branch and the second RF branch, so as to amplify the first RF signal or the second RF signal through the power amplification module and output a first RF amplified signal or a second RF amplified signal;

[0119] Control the first switch on the first RF branch and the second RF branch to turn on the first contact and the second contact; control the second switch on the target RF branch to turn on the first contact and the second contact; control the second switch on the non-target RF branch to turn off the first contact and the second contact, so as to merge the first RF amplified signal on the first RF branch and the first RF amplified signal on the second RF branch through the signal merging module, and output the RF combined amplified signal to the target antenna for transmission; or merge the second RF amplified signal on the first RF branch and the second RF branch, and output the RF combined amplified signal to the target antenna for transmission.

[0120] In some embodiments, the multiple RF branches include: a first RF branch and a second RF branch; when the signal generator generates multiple RF signals, when the signal generator generates multiple RF signals, controlling the signal generator to input the multiple RF signals into the multiple RF branches accordingly includes:

[0121] When the signal generator generates the first radio frequency signal and the second radio frequency signal, controlling the signal generator to input the first radio frequency signal to the first radio frequency branch, and to input the second radio frequency signal to the second radio frequency branch;

[0122] The method of transmitting the amplified radio frequency signal on each radio frequency branch to the antenna of each radio frequency branch by controlling the first switch and the second switch on each radio frequency branch to be turned on between the first contact and the third contact includes:

[0123] Control the first switch on the first RF branch and the second RF branch to turn on the first contact and the third contact; control the second switch on the first RF branch and the second RF branch to turn on the first contact and the third contact, so as to transmit the first RF amplified signal through the antenna on the first RF branch; and transmit the second RF amplified signal through the antenna on the second RF branch.

[0124] It should be noted that the description of the above method embodiment is similar to the description of the above RF circuit embodiment, and has similar beneficial effects as the RF circuit embodiment. For technical details not disclosed in the method embodiment of the present application, please refer to the description of the RF circuit embodiment of the present application for understanding.

[0125] The present application also provides an electronic device, Figure 8 This is an optional structural diagram of an electronic device provided in an embodiment of the present application. Figure 8 As shown, the electronic device 2 includes: a radio frequency circuit 21, a memory 22 and a processor 23. The memory 22 and the processor 23 are connected via a communication bus 24; the memory 22 is used to store executable instructions; the processor 23 is used to implement the control method of the radio frequency circuit provided in the embodiment of the present application based on the radio frequency circuit 21 when executing the executable instructions stored in the memory 22.

[0126] An embodiment of the present application provides a computer-readable storage medium storing executable instructions, wherein executable instructions are stored. When the executable instructions are executed by a processor, the processor will execute the control method of the radio frequency circuit provided in the embodiment of the present application.

[0127] In some embodiments, the computer-readable storage medium may be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash memory, magnetic surface storage, optical disk, or CD-ROM; or it may be various devices including one or any combination of the above memories.

[0128] In some embodiments, executable instructions may be in the form of a program, software, software module, script or code, written in any form of programming language (including compiled or interpreted languages, or declarative or procedural languages), and may be deployed in any form, including as a stand-alone program or as a module, component, subroutine or other unit suitable for use in a computing environment.

[0129] As an example, executable instructions may, but do not necessarily, correspond to a file in a file system, may be stored as part of a file that stores other programs or data, such as in one or more scripts in a HyperText Markup Language (HTML) document, in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files storing one or more modules, subroutines, or code portions).

[0130] By way of example, executable instructions may be deployed to be executed on one computing device, or on multiple computing devices located at one site, or on multiple computing devices distributed across multiple sites and interconnected by a communication network.

[0131] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of hardware embodiments, software embodiments, or embodiments in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0132] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0133] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0134] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0135] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the present application are included in the protection scope of the present application.

Claims

1. A radio frequency circuit, characterized in that: include: Signal generator, signal merging module, multiple RF branches and control module; Each of the multiple radio frequency branches includes: a power amplification module, a first switch, a second switch and an antenna; the first switch is connected to the power amplification module; the second switch is connected to the antenna; the first switch and the second switch are connected via the signal merging module; The control module is used for controlling the signal generator to synchronously input the single-channel RF signal to the multiple RF branches when the signal generator generates the single-channel RF signal; The power amplifier module is used to amplify the single-channel radio frequency signal on the radio frequency branch and output the single-channel radio frequency amplified signal; The control module is further used to connect the power amplification modules of the multiple radio frequency branches with the signal merging module by controlling the first switch in each radio frequency branch; and connect the signal merging module with the target antenna on the target radio frequency branch among the multiple radio frequency branches by controlling the second switch in each radio frequency branch; The signal merging module is used to merge the multiple single-channel RF amplified signals of the multiple RF branches, and output the RF combined amplified signal to the target antenna for signal transmission.

2. The radio frequency circuit according to claim 1, characterized in that: The first switch of each RF branch connects the power amplification module and the signal merging module; the second switch of each RF branch connects the signal merging module and the antenna; wherein, The control module is also used to control the first switch of each RF branch to be turned on when the signal generator generates the single RF signal; control the second switch on the target RF branch to be turned on, and control the second switch on the non-target RF branch among the multiple RF branches to be turned off.

3. The radio frequency circuit according to claim 1 or 2, characterized in that: Each of the first switch and the second switch includes: at least two contacts; the at least two contacts include at least: a first contact and a second contact; the first contact and the second contact are used to connect the power amplification module of each RF branch, the signal merging module and the antenna of each RF branch.

4. The radio frequency circuit according to claim 3, characterized in that: The at least two contacts also include: a third contact; the first contact and the second contact, and the first contact and the third contact are not simultaneously conductive; the first contact and the third contact are used to connect the power amplifier module of each RF branch and the antenna of each RF branch; wherein, The control module is further used to control the signal generator to input the multiple radio frequency signals into the multiple radio frequency branches accordingly when the signal generator generates multiple radio frequency signals; The power amplifier module is used to amplify the radio frequency signal on the radio frequency branch and output a radio frequency amplified signal; The control module is further used to transmit the radio frequency amplified signal on each radio frequency branch to the antenna of each radio frequency branch by controlling the first switch and the second switch on each radio frequency branch to be turned on between the first contact and the third contact; The antenna is used to transmit the amplified radio frequency signal on the radio frequency branch.

5. The radio frequency circuit according to claim 3, characterized in that: The first contact of the first switch is connected to the power amplification module; the second contact of the first switch is connected to the input end of the signal merging module, the first contact of the second switch is connected to the antenna; the second contact of the second switch is connected to the output end of the signal merging module; The control module is also used to control the first switch in each RF branch to be turned on between the first contact and the second contact when the signal generator generates the single-channel RF signal; control the second switch on the target RF branch to be turned on between the first contact and the second contact; and control the second switch on the non-target RF branch to turn off the first contact and the second contact.

6. The radio frequency circuit according to claim 4, characterized in that: The first contact of the first switch is connected to the power amplification module; the first contact of the second switch is connected to the antenna; and the third contact of the first switch is connected to the third contact of the second switch.

7. The radio frequency circuit according to any one of claims 1, 2, or 5, characterized in that: The control module is further used to determine the transmission signal strength corresponding to the antenna on each radio frequency branch; and determine the target radio frequency branch based on the transmission signal strength.

8. The radio frequency circuit according to any one of claims 4 to 6, characterized in that: The control module is further configured to, when the signal generator generates at least two RF signals, determine a single RF signal from the at least two RF signals; and control the signal generator to synchronously input the single RF signal to a RF branch corresponding to the single RF signal and an idle RF branch among the multiple RF branches; and controlling the signal generator to input the radio frequency signal other than the single radio frequency signal in the at least two radio frequency signals into the corresponding radio frequency branch; wherein the idle radio frequency branch includes at least one other radio frequency branch other than the at least two radio frequency branches corresponding to the at least two radio frequency signals in the multiple radio frequency branches; The power amplification module on each radio frequency branch is further used to amplify the radio frequency signal on the radio frequency branch or the single-channel radio frequency signal, and output the radio frequency amplified signal or the single-channel radio frequency amplified signal; The control module is further used to control the first switch and the second switch on the radio frequency branch corresponding to the single radio frequency signal and the idle radio frequency branch to be turned on at the first contact and the second contact; The signal merging module is further used to merge the radio frequency branch corresponding to the single radio frequency signal and at least two single radio frequency amplified signals on the idle radio frequency branch, and output a radio frequency combined amplified signal; The control module is further used to determine the target radio frequency branch from the radio frequency branch corresponding to the single radio frequency signal and the idle radio frequency branch, and control the first switch and the second switch on the target radio frequency branch to be turned on between the first contact and the second contact; The control module is further used to control the first switch and the second switch on at least one radio frequency branch to be turned on between the first contact and the third contact; The at least one radio frequency branch includes radio frequency branches other than the radio frequency branch corresponding to the single radio frequency signal and the idle radio frequency branch among the at least two radio frequency branches.

9. The radio frequency circuit according to any one of claims 1, 2, or 5, characterized in that: The multiple RF branches include: a first RF branch and a second RF branch; the single RF signal includes: a first RF signal corresponding to the first RF branch or a second RF signal corresponding to the second RF branch; wherein, The control module is further configured to, when the signal generator generates the first RF signal, control the signal generator to synchronously input the first RF signal to the first RF branch and the second RF branch; or, when the signal generator generates the second RF signal, control the signal generator to synchronously input the second RF signal to the first RF branch and the second RF branch; The power amplification module is used to amplify the first radio frequency signal or the second radio frequency signal and output a first radio frequency amplified signal or a second radio frequency amplified signal; The control module is further used to control the first switch on the first RF branch and the second RF branch to turn on the first contact and the second contact; control the second switch on the target RF branch to turn on the first contact and the second contact; and control the second switch on the non-target RF branch to turn off the first contact and the second contact; The signal merging module is also used to merge the first RF amplified signal on the first RF branch and the first RF amplified signal on the second RF branch, and output the RF combined amplified signal to the target antenna for transmission; or, merge the first RF branch and the second RF amplified signal on the second RF branch, and output the RF combined amplified signal to the target antenna for transmission.

10. The radio frequency circuit according to claim 9, characterized in that: The control module is further configured to control the signal generator to input the first RF signal to the first RF branch and to input the second RF signal to the second RF branch when the signal generator generates the first RF signal and the second RF signal; The control module is further used to control the first switch on the first RF branch and the second RF branch to turn on the first contact and the third contact; control the second switch on the first RF branch and the second RF branch to turn on the first contact and the third contact; The antenna on the first radio frequency branch is used to transmit the first radio frequency amplified signal; The antenna on the second radio frequency branch is used to transmit the second radio frequency amplified signal.

11. The radio frequency circuit according to any one of claims 1, 2, 4-6 or 10, characterized in that: The first switch and / or the second switch includes: a single-pole double-throw switch; the first contact is the fixed end of the single-pole double-throw switch; the second contact and the third contact are the moving ends of the single-pole double-throw; the multiple RF branches include: dual transmission channels or dual connection channels; the signal merging module includes: a combiner or a power divider.

12. A method for controlling a radio frequency circuit, characterized in that: A control module applied to a radio frequency circuit according to any one of claims 1 to 11, the method comprising: When the signal generator generates a single-channel RF signal, the signal generator is controlled to synchronously output the single-channel RF signal to multiple RF branches, so as to amplify the single-channel RF signal through the power amplifier module of each RF branch in the multiple RF branches, and output the RF amplified signal corresponding to each RF branch; By controlling the first switch in each RF branch, the power amplification modules of the multiple RF branches are connected to the signal merging module, so that the signal merging module merges the RF amplified signals of the multiple RF branches and outputs the RF combined amplified signal; By controlling the second switch in each RF branch, the signal combining module is connected to a target antenna on a target RF branch among the multiple RF branches, so that the RF combined and amplified signal is transmitted through the target antenna.

13. The method according to claim 12, characterized in that Each of the first switch and the second switch includes: a first contact, a second contact and a third contact; the first contact and the second contact, and the first contact and the third contact are not simultaneously conductive; the first contact and the second contact are used to connect the power amplification module of each RF branch, the signal merging module and the antenna of each RF branch, and the first contact and the third contact are used to connect the power amplification module of each RF branch and the antenna of each RF branch; the method further includes: When the signal generator generates multiple radio frequency signals, controlling the signal generator to input the multiple radio frequency signals into the multiple radio frequency branches accordingly; The power amplifier module of each radio frequency branch is used to amplify the radio frequency signal on each radio frequency branch and output the radio frequency amplified signal of each radio frequency branch; By controlling the first switch and the second switch on each RF branch to be turned on between the first contact and the third contact, the RF amplified signal on each RF branch is transmitted to the antenna of each RF branch, so that the RF amplified signal on each RF branch is emitted through the antenna of each RF branch.

14. The method according to claim 12, characterized in that The method further comprises: Determine the transmission signal strength corresponding to the antenna on each radio frequency branch; The target radio frequency branch is determined according to the transmit signal strength.

15. An electronic device, characterized in that: include: The radio frequency circuit, memory and processor according to any one of claims 1 to 11, wherein: The memory is used to store executable instructions; The processor is used to implement the control method of the radio frequency circuit according to any one of claims 12 to 14 based on the radio frequency circuit when executing the executable instructions stored in the memory.

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