WO2021248344A1 - 1t2r radio-frequency circuit and wireless communication device - Google Patents

Abstract

Disclosed are a 1T2R radio-frequency circuit and a wireless communication device. The radio-frequency circuit comprises first and second radio-frequency amplifiers, first and second transceiving switches, first and second low-noise amplifiers, and first to third channel switches, wherein the first radio-frequency amplifier and the first low-noise amplifier are respectively connected to the first channel switch by means of the first transceiving switch, and the second radio-frequency amplifier and the second low-noise amplifier are respectively connected to the first channel switch by means of the second transceiving switch; an output end of the first low-noise amplifier is connected to a plurality of receivers by means of the second channel switch, and an output end of the second low-noise amplifier is connected to the plurality of receivers by means of the third channel switch; and a radio-frequency transmission signal is respectively transmitted to one of a plurality of antennas by means of the first radio-frequency amplifier or the second radio-frequency amplifier, so as to realize one-way transmission, and a radio-frequency reception signal is received by means of any two of the plurality of antennas and simultaneously passes through the first low-noise amplifier and the second low-noise amplifier to be amplified and output, so as to realize two-way reception.

Description

1T2R radio frequency circuit, wireless communication equipment Technical field

The present invention relates to the field of wireless communication technology, and in particular to a 1T2R radio frequency circuit and wireless communication equipment.

Background technique

With the continuous development of mobile wireless communication technology, 5G mobile technology has matured and been applied in practice. Different from previous generations of mobile communication technologies, 5G has added several new frequency bands, including n77 3300-4200MHz, n78 3300-3800MHz and n79 4400-5000MHz. Different from previous generations of mobile communication technology, in order to achieve a high download rate in 5G, a single mobile terminal always needs to achieve four simultaneous receptions, thereby increasing the download rate. Four-way reception requires the design of four independent antennas in the mobile terminal device. Because the performance of the four antennas is inconsistent, the four antennas require the terminal to transmit signals as sounding reference signals (Sounding Reference Signal) to upload to the base station, and channel quality detection can be performed And estimation, beam management, etc.

Summary of the invention

The purpose of the present invention is to provide a 1T2R radio frequency circuit, which simplifies the design complexity of the radio frequency front end in communication equipment, improves the integration level, and reduces the cost at the same time. .

An embodiment of the present application provides a 1T2R radio frequency circuit, including: a first radio frequency amplifier, a second radio frequency amplifier, a first transceiver switch, a second transceiver switch, a first low noise amplifier, a second low noise amplifier, a first Channel switch, second channel switch and third channel switch, among which,

The output terminal of the first radio frequency amplifier and the input terminal of the first low noise amplifier are respectively connected to the first channel switch through the first transceiver switch, and the output terminal of the second radio frequency amplifier is connected to the second channel switch respectively. The input ends of the low noise amplifier are respectively connected to the first channel switch through the second transceiver switch;

The first channel switch is connected to multiple antennas and has an SRS switch connected to multiple SRS antennas;

The output terminal of the first low noise amplifier is connected to multiple receivers through the second channel switch, and the output terminal of the second low noise amplifier is connected to multiple receivers through the third channel switch;

Wherein, the radio frequency transmission signal is transmitted to one of the plurality of antennas through the first radio frequency amplifier or the second radio frequency amplifier to realize one-way transmission, and the radio frequency reception signal is received and combined by any two of the plurality of antennas. At the same time, the first low-noise amplifier and the second low-noise amplifier are used to amplify and output to realize two-way reception.

In a preferred example, a filter is connected between the first transceiver switch and the first channel switch, and a filter is connected between the second transceiver switch and the first channel switch.

In a preferred example, the n77 or n79 radio frequency transmission signal is amplified by the first radio frequency amplifier and then sequentially output to the multiple antennas through the first transceiver switch and the first channel switch and transmitted through the SRS switch To the multiple SRS antennas, or after being amplified by the second radio frequency amplifier, the second transceiver switch and the first channel switch output to the multiple antennas and transmit to the multiple antennas through the SRS switch. SRS antennas.

In a preferred example, n77 or n79 radio frequency reception signals are respectively received by any two antennas among the plurality of antennas, and one of the two antennas passes the received radio frequency signal through the first channel switch and The first transceiver switch is outputted to the first low-noise amplifier for amplification and output to the corresponding receiver through the second channel switch, or output through the first channel switch and the second transceiver switch in turn Amplify in the second low noise amplifier and output to the corresponding receiver through the third channel switch.

In a preferred example, the first low noise amplifier is connected to an n77 receiver and an n79 receiver, and the second low noise amplifier is connected to an n77 receiver and an n79 receiver.

In a preferred example, the multiple antennas include first to fourth antennas, and the multiple SRS antennas include first and second SRS antennas.

Another embodiment of the present application also provides a 1T2R radio frequency circuit, including: a first radio frequency amplifier, a second radio frequency amplifier, a first transceiver switch, a second transceiver switch, first to fourth low noise amplifiers, and a channel switch ,in,

The output terminal of the first radio frequency amplifier, the input terminal of the first low noise amplifier, and the input terminal of the third low noise amplifier are respectively connected to the channel switch through the first transceiver switch, and the second radio frequency The output terminal of the amplifier, the input terminal of the second low noise amplifier and the input terminal of the fourth low noise amplifier are respectively connected to the channel switch through the second transceiver switch;

The channel switch is connected to multiple antennas and has an SRS switch connected to multiple SRS antennas;

The output ends of the first to fourth low noise amplifiers are each connected to a receiver;

Wherein, the radio frequency transmission signal is transmitted to one of the plurality of antennas through the first radio frequency amplifier or the second radio frequency amplifier to realize one-way transmission, and the radio frequency reception signal is received and combined by any two of the plurality of antennas. Simultaneously through the first and third low-noise amplifiers or through the second and fourth low-noise amplifiers for amplifying and outputting to achieve two-way reception.

In a preferred example, the n77 or n79 radio frequency transmission signal is amplified by the first radio frequency amplifier and then sequentially output to the multiple antennas through the first transceiver switch and the channel switch, and is transmitted to all antennas through the SRS switch. The multiple SRS antennas, or after being amplified by the second radio frequency amplifier, the second transceiver switch and the channel switch are sequentially output to the multiple antennas and transmitted to the multiple SRS antennas through the SRS switch.

In a preferred example, the n77 or n79 radio frequency reception signal is respectively received by any two antennas among the plurality of antennas, and one of the two antennas passes the received radio frequency signal through the channel switch and the The first transceiver switch outputs to the first and third low-noise amplifiers for amplification and output to the corresponding receiver, or sequentially passes through the channel switch and the second transceiver switch to output to the second and fourth Amplify in the low noise amplifier and output to the corresponding receiver.

Another embodiment of the present application also provides a wireless communication device that uses the 1T2R radio frequency circuit described above.

Compared with the prior art, the method of the present application has the following beneficial effects:

The integration of the 1T2R radio frequency circuit of the present application is improved, and functional modules such as the control line and the amplifier inside the circuit are shared, which simplifies the design complexity of the radio frequency front end in the communication device and reduces the cost at the same time.

A large number of technical features are recorded in the specification of this application, which are distributed in various technical solutions. If all possible combinations of technical features (ie, technical solutions) of this application are to be listed, the specification will be too long. In order to avoid this problem, the various technical features disclosed in the above invention content of this application, the various technical features disclosed in the various embodiments and examples below, and the various technical features disclosed in the drawings can be freely combined with each other to form Various new technical solutions (these technical solutions should be regarded as having been recorded in this specification), unless this combination of technical features is technically infeasible. For example, in one example, the feature A+B+C is disclosed, and in another example, the feature A+B+D+E is disclosed, and the features C and D are equivalent technical means that play the same role. Technically, just choose It can be used once and cannot be used at the same time. Feature E can be combined with feature C technically, then the A+B+C+D solution should not be regarded as recorded because it is technically infeasible, and A+B+ The C+E plan should be deemed to have been documented.

Description of the drawings

The non-limiting and non-exhaustive embodiments of the present application are described with reference to the following drawings, in which unless otherwise specified, the same reference numerals refer to the same parts in each view.

Fig. 1 is a schematic diagram of a 1T2R radio frequency circuit in an embodiment of the present invention.

Figure 2 is a schematic diagram of a 1T2R radio frequency circuit in another embodiment of the present invention.

detailed description

In the following description, many technical details are proposed for the reader to better understand this application. However, those of ordinary skill in the art can understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions required by the claims of this application can be realized.

In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

Example one

The first embodiment of the present application discloses a 1T2R radio frequency circuit, and FIG. 1 shows a schematic diagram of the radio frequency circuit. The circuit includes: a first radio frequency amplifier 101, a second radio frequency amplifier 104, a first transceiver switch 102, a second transceiver switch 105, a first low noise amplifier 109, a second low noise amplifier 110, a first channel switch 111, and a second The channel switch 112 and the third channel switch 107, in which,

The output terminal of the first radio frequency amplifier 101 and the input terminal of the first low noise amplifier 109 are respectively connected to the first channel switch 107 through the first transceiver switch 102, and the output terminal of the second radio frequency amplifier 104 And the input terminal 110 of the second low noise amplifier are respectively connected to the first channel switch 107 through the second transceiver switch 105;

The first channel switch 107 is connected to multiple antennas and has an SRS switch 108 connected to multiple SRS antennas;

The output terminal of the first low noise amplifier 109 is connected to multiple receivers through the second channel switch 111, and the output terminal of the second low noise amplifier 110 is connected to multiple receivers through the third channel switch 112;

Wherein, the radio frequency transmission signal is transmitted to one of the plurality of antennas through the first radio frequency amplifier 101 or the second radio frequency amplifier 104 to realize one-way transmission, and the radio frequency reception signal passes through any two of the plurality of antennas. Receive and simultaneously pass through the first low-noise amplifier 109 and the second low-noise amplifier 110 to amplify and output to realize two-way reception.

In an embodiment, a filter 103 is connected between the first transceiver switch 102 and the first channel switch 107, and a filter is connected between the second transceiver switch 105 and the first channel switch 107 106.

In one embodiment, the n77 or n79 radio frequency transmission signal is amplified by the first radio frequency amplifier 101 and then sequentially output to the multiple antennas through the first transceiver switch 102 and the first channel switch 107 and then passes through the The SRS switch transmits to the multiple SRS antennas, or is amplified by the second radio frequency amplifier 104 and then sequentially output to the multiple antennas by the second transceiver switch 105 and the first channel switch 107 and then passes through the SRS The switch transmits to the multiple SRS antennas.

In an embodiment, the n77 or n79 radio frequency reception signal is respectively received by any two antennas among the plurality of antennas, and one of the two antennas sequentially passes the received radio frequency signal through the first channel switch 107 And the output of the first transceiver switch 102 to the first low-noise amplifier 109 for amplification and output to the corresponding receiver through the second channel switch 111, or through the first channel switch 107 and the The second transceiver switch 105 outputs to the second low-noise amplifier 110 for amplification and outputs to the corresponding receiver through the third channel switch 112.

In an embodiment, the first low noise amplifier 109 is connected to an n77 receiver RX_n77_A and an n79 receiver RX_n79_A, and the second low noise amplifier 110 is connected to an n77 receiver RX_n77_B and an n79 receiver RX_n79_B.

In an embodiment, the multiple antennas include first to fourth antennas ANT1, ANT2, ANT3, and ANT4, and the multiple SRS antennas include a first SRS antenna AUX1 and a second SRS antenna AUX2. In an embodiment, the first SRS antenna AUX1 and the second SRS antenna AUX2 are respectively connected to the first SRS receiver AUX1_Rx and the second SRS receiver AUX2_Rx through the SRS switch 108.

The following are the processes of transmitting and receiving radio frequency signals of n77 and n79:

n77 1T realization path: the n77 radio frequency transmission signal RFin_n77 is amplified by the radio frequency power amplifier (PA) 101, passes through the first transceiver switch 102, passes through the n77/n79 filter 103, and transmits the signal to the antennas ANT1 and ANT2 through the first channel switch 107 , ANT3 and ANT4, through the SRS switch 108 at the same time, can transmit the transmission power to the SRS antennas AUX1 and AUX2. The realization path of n77 2R: n77 radio frequency receiving signal can choose any two antennas among the antennas ANT1, ANT2, ANT3 and ANT4 to realize the reception, forming the A signal and the B signal respectively, where the A signal enters the first channel from the antenna The switch 107 passes through the n77/n79 filter 103, passes through the first transceiver switch 102, to the first low noise amplifier (LNA) 109 and then enters the second channel switch 111 and outputs to the port of the receiver Rx_n77_A; the signal of channel B enters from the antenna The first channel switch 107 passes through the n77/n79 filter 106, passes through the second transceiver switch 105, and is amplified by the second low noise amplifier (LNA) 110, and then enters the third channel switch 112 to output to the port of Rx_n77_B.

n79 1T realization path: n79 radio frequency transmission signal RFin_n79 is amplified by the second radio frequency power amplifier (PA) 104, passes through the second transceiver switch 105, passes through the n77/n79 filter 106, and transmits the power to the antenna ANT1 through the first channel switch 107 , ANT2, ANT3 and ANT4, through the SRS switch 108 at the same time, can transmit the transmission signal to the SRS antenna AUX1 and AUX2. The realization path of n79 2R: n79 RF receiving signal can choose any two antennas among antennas ANT1, ANT2, ANT3 and ANT4 to realize the reception, respectively forming the A signal and the B signal. Among them, the A signal enters the first channel from the antenna The switch 107 passes through the n77/n79 filter 103, passes through the first transceiver switch 102, to the first low noise amplifier (LNA) 109, and then enters the second channel switch 111 and outputs to the port of Rx_n79_A; the signal of channel B enters the first port from the antenna The channel switch 107 passes through the n77/n79 filter 106, passes through the second transceiver switch 105, and is amplified by the second low noise amplifier (LNA) 110, and then enters the third channel switch 112 to the port of the receiver Rx_n79_B.

In this embodiment, the SRS function is integrated in the switch 107 at the same time, and the transmission power of n77 and n79 can be transmitted to the AUX1 and AUX2 ports of the SRS antenna through the SRS switch to realize the SRS function of the additional two antennas. At the same time, the SRS switch has an additional DPDT function, which enables the AUX1 and AUX2 ports to receive signals to be output to the SRS receivers AUX1_Rx and AUX2_Rx through the SRS switch.

Example two

The second embodiment of the present application discloses a 1T2R radio frequency circuit, and FIG. 2 shows a schematic diagram of the radio frequency circuit. The circuit includes: a first radio frequency amplifier 201, a second radio frequency amplifier 204, a first transceiver switch 202, a second transceiver switch 205, first to fourth low-noise amplifiers 209-212 and a channel switch 207, among which,

The output terminal of the first radio frequency amplifier 201, the input terminal of the first low noise amplifier 209, and the input terminal of the third low noise amplifier 211 are respectively connected to the channel switch 207 through the first transceiver switch 202, The output terminal of the second radio frequency amplifier 204, the input terminal of the second low noise amplifier 210, and the input terminal of the fourth low noise amplifier 212 are respectively connected to the channel switch 207 through the second transceiver switch 205;

The channel switch 207 is connected to multiple antennas and has an SRS switch 208 connected to multiple SRS antennas;

The output ends of the first to fourth low noise amplifiers 209-212 are each connected to a receiver;

Wherein, the radio frequency transmission signal is transmitted to one of the plurality of antennas through the first radio frequency amplifier 201 or the second radio frequency amplifier 204 to realize one-way transmission, and the radio frequency reception signal passes through any two of the plurality of antennas. Receive and simultaneously pass through the first and third low-noise amplifiers 209 and 211 or through the second and fourth low-noise amplifiers 210 and 212 for amplification and output to realize two-way reception.

In an embodiment, a filter 203 is connected between the first transceiver switch 202 and the channel switch 207, and a filter 206 is connected between the second transceiver switch 205 and the channel switch 207.

In an embodiment, the n77 or n79 radio frequency transmission signal is amplified by the first radio frequency amplifier 201 and then sequentially output to the multiple antennas through the first transceiver switch 202 and the channel switch 207 and then passes through the SRS switch. Transmit to the multiple SRS antennas, or after being amplified by the second radio frequency amplifier 204, the second transceiver switch 205 and the channel switch 207 are output to the multiple antennas and transmitted to all the antennas through the SRS switch. Said multiple SRS antennas.

In an embodiment, the n77 or n79 radio frequency reception signal is received by any two antennas of the plurality of antennas, and one of the two antennas passes the received radio frequency signal through the channel switch 207 and all the antennas in sequence. The first transceiver switch 202 outputs to the first and third low-noise amplifiers 209, 211 for amplification and output to the corresponding receiver, or through the channel switch 207 and the second transceiver switch 205 to output to The second and fourth low noise amplifiers 210 and 212 are amplified and output to the corresponding receivers.

The radio frequency circuit of this embodiment is basically the same as the radio frequency circuit of the first embodiment. The difference is: the first and second low-noise amplifiers in the first embodiment can amplify the n77 and n79 radio frequency signals, and then divide the amplified signal into two parts , While the first and third low-noise amplifiers in the second embodiment can realize the amplification of n77 radio frequency signals, and the second and fourth low-noise amplifiers can realize the amplification of n79 radio frequency signals, which are directly output after amplification without additional channel switches. , That is, the low-noise amplifier in the first embodiment realizes broadband amplification, and the ground noise amplifier in the second embodiment realizes narrow-band amplification.

The following are the processes of transmitting and receiving radio frequency signals of n77 and n79:

n77 1T realization path: n77 radio frequency transmission signal RFin_n77 is amplified by the first radio frequency power amplifier (PA) 201, passes through the first transceiver switch 202, passes through the n77/n79 filter 203, and transmits the signal to the antennas ANT1 and ANT2 through the channel switch 207 , ANT3 and ANT4, through the SRS switch 208 at the same time, can transmit the transmission signal to the SRS antennas AUX1 and AUX2. The realization path of n77 2R: n77 RF receiving signal can choose any two antennas among the antennas ANT1, ANT2, ANT3 and ANT4 to realize the reception, and form the A signal and the B signal respectively. Among them, the A signal enters the channel switch 207 from the antenna , Through the n77/n79 filter 203, through the first transceiver switch 202, amplified by the first low noise amplifier (LNA) A 209 of the n77, and output to the port of the receiver Rx_n77_A; the signal of channel B enters the channel switch 207 from the antenna and passes The n77/n79 filter 206 passes through the second transceiver switch 205, is amplified by the third low noise amplifier (LNA) B 211 of the n77, and then output to the port of the receiver Rx_n77_B, thereby realizing the function of the n77 2R in the unified module.

n79 1T realization path: n79 radio frequency transmission signal RFin_n79 is amplified by the second radio frequency power amplifier (PA) 204, passes through the second transceiver switch 205, passes through the n77/n79 filter 206, and transmits the signal to the antennas ANT1 and ANT2 through the channel switch 207 , ANT3 and ANT4, through the SRS switch 208 at the same time, can transmit the transmission signal to the SRS antennas AUX1 and AUX2. The realization path of n79 2R: n79 RF receiving signal can choose any two antennas among antennas ANT1, ANT2, ANT3 and ANT4 to realize the reception, and form the A signal and the B signal respectively. Among them, the A signal enters the channel switch 207 from the antenna , Through the n77/n79 filter 203, through the first transceiver switch 202, amplified by the second low noise amplifier (LNA) A 210 of the n79, and output to the port of the receiver Rx_n79_A; the signal of channel B enters the channel switch 207 from the antenna and passes The n77/n79 filter 206 passes through the second transceiver switch 205, is amplified by the fourth low-noise amplifier (LNA) B 212 of the n79, and then output to the port of the receiver Rx_n79_B; thus, the function of the n79 2R in the unified module is realized.

Similarly, the switch 207 in this embodiment integrates the SRS function at the same time, and the transmission power of n77 and n79 can be transmitted to the AUX1 and AUX2 ports of the SRS antenna through the SRS switch to realize the SRS function of the additional two antennas. At the same time, the SRS switch has an additional DPDT function, which enables the AUX1 and AUX2 ports to receive signals to be output to the SRS receivers AUX1_Rx and AUX2_Rx through the SRS switch.

Another embodiment of the present application also discloses a wireless communication device, which uses the above-mentioned radio frequency circuit. The wireless communication devices involved in the embodiments of the present application may include electronic devices or network devices. The electronic devices may be various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices linked to wireless modems with wireless communication functions. And various forms of user equipment, mobile terminals, terminal equipment, and so on.

It should be noted that in the application documents of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these There is any such actual relationship or sequence between entities or operations. Moreover, the terms "including", "including" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also those that are not explicitly listed Other elements of, or also include elements inherent to this process, method, article or equipment. If there are no more restrictions, the element defined by the sentence "including one" does not exclude the existence of other same elements in the process, method, article, or equipment that includes the element. In the application documents of this patent, if it is mentioned that an act is performed based on a certain element, it means that the act is performed at least based on that element. It includes two situations: performing the act only based on the element, and performing the act based on the element and Other elements perform the behavior. Multiple, multiple, multiple, etc. expressions include 2, 2, 2 and more than 2, 2 or more, and 2 or more.

All documents mentioned in this specification are considered to be included in the disclosure of this application as a whole, so that they can be used as a basis for modification when necessary. In addition, it should be understood that the above descriptions are only preferred embodiments of this specification, and are not intended to limit the protection scope of this specification. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification shall be included in the protection scope of one or more embodiments of this specification.

In some cases, the actions or steps described in the claims may be performed in a different order than in the embodiments and still achieve desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or sequential order shown in order to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Claims (10)

A 1T2R radio frequency circuit, which is characterized by comprising: a first radio frequency amplifier, a second radio frequency amplifier, a first transceiver switch, a second transceiver switch, a first low noise amplifier, a second low noise amplifier, a first channel switch, and a first channel switch. Two-channel switch and third-channel switch, of which, The output terminal of the first radio frequency amplifier and the input terminal of the first low noise amplifier are respectively connected to the first channel switch through the first transceiver switch, and the output terminal of the second radio frequency amplifier is connected to the second channel switch respectively. The input ends of the low noise amplifier are respectively connected to the first channel switch through the second transceiver switch; The first channel switch is connected to multiple antennas and has an SRS switch connected to multiple SRS antennas; The output terminal of the first low noise amplifier is connected to multiple receivers through the second channel switch, and the output terminal of the second low noise amplifier is connected to multiple receivers through the third channel switch; Wherein, the radio frequency transmission signal is transmitted to one of the plurality of antennas through the first radio frequency amplifier or the second radio frequency amplifier to realize one-way transmission, and the radio frequency reception signal is received and combined by any two of the plurality of antennas. At the same time, the first low-noise amplifier and the second low-noise amplifier are used to amplify and output to realize two-way reception. The radio frequency circuit of claim 1, wherein a filter is connected between the first transceiving switch and the first channel switch, and the second transceiving switch is connected to the first channel switch. There are filters. The radio frequency circuit according to claim 1, wherein the n77 or n79 radio frequency transmission signal is amplified by the first radio frequency amplifier and then sequentially output to the plurality of The antenna is transmitted to the multiple SRS antennas through the SRS switch, or the second transceiver switch and the first channel switch are sequentially output to the multiple antennas after being amplified by the second radio frequency amplifier. The SRS switch transmits to the multiple SRS antennas. The radio frequency circuit of claim 1, wherein the n77 or n79 radio frequency reception signals are respectively received by any two antennas among the plurality of antennas, and one of the two antennas sequentially receives the radio frequency signals After the first channel switch and the first transceiver switch, output to the first low-noise amplifier for amplification and output to the corresponding receiver through the second channel switch, or sequentially through the first channel switch And the second transceiver switch is output to the second low-noise amplifier for amplification and output to the corresponding receiver through the third channel switch. 5. The radio frequency circuit of claim 5, wherein the first low noise amplifier is connected to an n77 receiver and an n79 receiver, and the second low noise amplifier is connected to an n77 receiver and an n79 receiver. The radio frequency circuit according to claim 1, wherein the plurality of antennas include first to fourth antennas, and the plurality of SRS antennas include first and second SRS antennas. A 1T2R radio frequency circuit, which is characterized by comprising: a first radio frequency amplifier, a second radio frequency amplifier, a first transceiver switch, a second transceiver switch, first to fourth low noise amplifiers, and a channel switch, wherein: The output terminal of the first radio frequency amplifier, the input terminal of the first low noise amplifier, and the input terminal of the third low noise amplifier are respectively connected to the channel switch through the first transceiver switch, and the second radio frequency The output terminal of the amplifier, the input terminal of the second low noise amplifier and the input terminal of the fourth low noise amplifier are respectively connected to the channel switch through the second transceiver switch; The channel switch is connected to multiple antennas and has an SRS switch connected to multiple SRS antennas; The output ends of the first to fourth low noise amplifiers are each connected to a receiver; Wherein, the radio frequency transmission signal is transmitted to one of the plurality of antennas through the first radio frequency amplifier or the second radio frequency amplifier to realize one-way transmission, and the radio frequency reception signal is received and combined by any two of the plurality of antennas. Simultaneously through the first and third low-noise amplifiers or through the second and fourth low-noise amplifiers for amplifying and outputting to achieve two-way reception. The radio frequency circuit of claim 7, wherein the n77 or n79 radio frequency transmission signal is amplified by the first radio frequency amplifier and then sequentially output to the multiple antennas through the first transceiver switch and the channel switch. Transmit to the multiple SRS antennas through the SRS switch, or after being amplified by the second radio frequency amplifier, the second transceiver switch and the channel switch are output to the multiple antennas and transmitted through the SRS switch in sequence To the multiple SRS antennas. The radio frequency circuit according to claim 7, wherein the n77 or n79 radio frequency reception signals are respectively received by any two antennas in the plurality of antennas, and one of the two antennas sequentially receives the radio frequency signals. After the first channel switch and the first transceiving switch, output to the first and third low-noise amplifiers for amplification and output to the corresponding receiver, or sequentially through the channel switch and the second transceiving switch Output to the second and fourth low noise amplifiers for amplification and output to the corresponding receiver. A wireless communication device, characterized by comprising: the 1T2R radio frequency circuit according to any one of claims 1-9.

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