Radio frequency transceiver circuit and vehicle
By designing switching and amplification modules in the RF transceiver circuit, and combining them with filtering components, the problems of high power consumption and high cost of low-orbit satellite communication terminals were solved, achieving low-cost and highly stable signal reception and transmission.
Patent Information
- Application Number
- CN202520347872.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing low-Earth orbit communication satellite terminals consume a lot of power and are expensive.
A radio frequency transceiver circuit was designed, including a switching module, a first amplification module, a second amplification module, a channel multiplexing module, and a transceiver control module. By controlling the signals to conduct different ports to connect to the radio frequency antenna and radio frequency transceiver, and combining filtering and amplification components, the circuit can realize signal reception and transmission, thereby reducing power consumption and cost.
It achieves low-cost, small-sized, and highly stable signal reception and transmission, with good electromagnetic compatibility, and is suitable for low-orbit satellite communication terminals.
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Figure CN223957557U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of communication, in particular to a radio frequency transceiver circuit and a vehicle. BACKGROUND
[0002] With the development of electronic information technology, communication terminals can communicate with low-orbit satellites. However, the terminals currently communicating with low-orbit communication satellites have high power consumption and high cost. CONTENT OF THE UTILITY MODEL
[0003] The present application provides a radio frequency transceiver circuit and a vehicle to improve the above-mentioned defects.
[0004] In a first aspect, an embodiment of the present application provides a radio frequency transceiver circuit, comprising: a switch module, a first amplification module, a second amplification module, a channel multiplexing module, and a transceiver control module; a first port of the switch module is connected with an output port of the first amplification module, a second port of the switch module is connected with an input port of the second amplification module, a control port of the switch module is connected with an output port of the transceiver control module, a third port of the switch module is externally connected with a radio frequency antenna, the switch module is used for turning on the first port of the switch module and the third port of the switch module, or turning on the second port of the switch module and the third port of the switch module based on a control signal received by the control port; an input port of the first amplification module is connected with a first port of the channel multiplexing module, a control port of the first amplification module is connected with an output port of the transceiver control module; an output port of the second amplification module is connected with a second port of the channel multiplexing module; the first port of the channel multiplexing module is connected with an input port of the transceiver control module, and a third port of the channel multiplexing module is externally connected with a radio frequency transceiver.
[0005] According to the radio frequency transceiver circuit of the first aspect, the radio frequency transceiver circuit is turned on by the switch module based on the control signal received by the control port, the first port of the switch module and the third port of the switch module are turned on, or the second port of the switch module and the third port of the switch module are turned on, the third port of the channel multiplexing module is externally connected with the radio frequency transceiver, and the first amplification module and the second amplification module are combined, so that the signal receiving and sending between the radio frequency transceiver and the radio frequency antenna is realized by the radio frequency transceiver circuit, and the radio frequency transceiver circuit has low cost, small size and high stability. In addition, the radio frequency transceiver circuit in the embodiment of the present application is externally connected with the radio frequency transceiver or the radio frequency antenna, and has good electromagnetic compatibility.
[0006] Further, the anti-reverse module comprises a first input end, a first output end, a first MOS tube and a first ground end; the first input end is connected with the anti-surge module; the first output end is connected with the second filter module; a drain of the first MOS tube serves as the first input end, a source of the first MOS tube serves as the first output end, and a gate of the first MOS tube is connected with the first ground end.
[0007] Further, the second amplification module comprises a filter assembly and an amplification assembly; a first input port of the filter assembly serves as an input port of the second amplification module, and a second output port of the amplification assembly serves as an output port of the second amplification module; a first output port of the filter assembly is connected with a second input port of the amplification assembly; the filter assembly is configured to perform filter processing on the input downlink signal, and the amplification assembly is configured to perform amplification processing on the downlink signal after the filter processing.
[0008] Further, the filter assembly comprises a first filter unit and a second filter unit, and the amplification assembly comprises a first amplification unit and a second amplification unit; a third input port of the first filter unit serves as the input port of the second amplification module, and a fourth output port of the second amplification unit serves as the output port of the second amplification module; a third output port of the first filter unit is connected with a fifth input port of the first amplification unit; a fifth output port of the first amplification unit is connected with a sixth input port of the second filter unit, and a sixth output port of the second filter unit is connected with a fourth input port of the second amplification unit; the first filter unit is configured to attenuate a frequency band other than a first target frequency band in the downlink signal, the second filter unit is configured to attenuate a multiple harmonic of the first target frequency band in the downlink signal, and the first amplification unit and the second amplification unit are both configured to amplify the first target frequency band in the downlink signal.
[0009] Further, the second amplification module further comprises a first attenuation unit; a seventh output port of the first attenuation unit serves as the output port of the second amplification module; and a seventh input port of the first attenuation unit is connected with the fourth output port of the second amplification unit.
[0010] Further, the first filter unit is a thin-film cavity acoustic resonant filter, the second filter unit is an acoustic surface wave filter, and the first attenuation unit is a π-type attenuation network.
[0011] Optionally, the first amplification unit and the second amplification unit can both be low-noise amplifiers.
[0012] Further, the first amplification module comprises a second attenuation unit, a third filtering unit and a third amplification unit, an eighth input port of the second attenuation unit is an input port of the first amplification module, a ninth output port of the third amplification unit is an output port of the first amplification module, and an enable port of the third amplification unit is a control port of the first amplification module; an eighth output port of the second attenuation unit is connected with a tenth input port of the third filtering unit; a tenth output port of the third filtering unit is connected with a ninth input port of the third amplification unit; the second attenuation unit is configured to attenuate the uplink signal, the third filtering unit is configured to attenuate a frequency band other than the second target frequency band in the uplink signal, and the third amplification unit is configured to amplify the second target frequency band in the uplink signal.
[0013] Further, the transceiving control module comprises a signal detection component and a comparator, an eleventh input port of the signal detection component is an input port of the transceiving control module, and a twelfth output port of the comparator is an output port of the transceiving control module; an eleventh output port of the signal detection component is connected with a twelfth input port of the comparator.
[0014] Further, the radio frequency transceiver circuit further comprises a power conversion module, a fourth port of the channel multiplexing module is connected with an input port of the power conversion module; a thirteenth output port of the power conversion module is configured to provide a first power source for the first amplification module, and a fourteenth output port of the power conversion module is configured to provide a second power source for the switch module, the second amplification module and the transceiving control module respectively.
[0015] Further, the channel multiplexing module comprises a combiner and a direct current extraction component, a fifth port of the combiner is a first port of the channel multiplexing module, a sixth port of the combiner is a second port of the channel multiplexing module, a seventh port of the combiner is a third port of the channel multiplexing module, and an eighth port of the direct current extraction component is a fourth port of the channel multiplexing module; a ninth port of the direct current extraction component is connected with the seventh port of the combiner.
[0016] In a second aspect, the embodiments of the present application further provide a vehicle, comprising a radio frequency antenna, a radio frequency transceiver and a radio frequency transceiver circuit as described in the first aspect; the radio frequency transceiver circuit is configured to be externally connected to the radio frequency antenna and the radio frequency transceiver respectively.
[0017] In addition, the technical effects of the power supply system provided in the second aspect can refer to the technical effects of the radio frequency transceiver circuit described in the first aspect, which will not be described here again. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.
[0019] Figure 1 The structural block diagram of the radio frequency transceiver circuit provided by the embodiment of the present application is shown;
[0020] Figure 2 The structural block diagram of the radio frequency transceiver circuit provided by another embodiment of the present application is shown;
[0021] Figure 3 The structural block diagram of the radio frequency transceiver circuit provided by another embodiment of the present application is shown;
[0022] Figure 4 The structural block diagram of the radio frequency transceiver circuit provided by another embodiment of the present application is shown;
[0023] Figure 5 The structural block diagram of the radio frequency transceiver circuit provided by another embodiment of the present application is shown;
[0024] Figure 6 The structural block diagram of the radio frequency transceiver circuit provided by another embodiment of the present application is shown;
[0025] Figure 7 The structural block diagram of the radio frequency transceiver circuit provided by another embodiment of the present application is shown;
[0026] Figure 8 The structural block diagram of the radio frequency transceiver circuit provided by another embodiment of the present application is shown;
[0027] Figure 9 The schematic diagram of the vehicle provided by the embodiment of the present application is shown. DETAILED DESCRIPTION
[0028] In order to facilitate the understanding of the present embodiment, the present embodiment will be described more fully below with reference to the related drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the present embodiment are only for the purpose of describing the specific embodiments and are not intended to limit the present application.
[0030] With the development of electronic information technology, communication can be carried out between a communication terminal and a low earth orbit satellite. However, the terminal for communicating with the low earth orbit satellite has high power consumption and high cost. How to reduce the power consumption and cost of the terminal for communicating with the low earth orbit satellite is a problem to be solved.
[0031] Currently, a communication terminal with high power transmission capability can communicate with a low earth orbit satellite (LEO). The low earth orbit satellite has an orbital height of 400-2000 km, while the geosynchronous orbit satellite (GEO) has an orbital height of 35786 km. The geosynchronous orbit satellite has the advantages of less number of satellites, global coverage, and simple satellite tracking control. The low earth orbit satellite has a lower orbital height than the geosynchronous orbit satellite, so the path loss, transmission power, and propagation delay of the low earth orbit satellite in the communication process are lower than those of the geosynchronous orbit satellite. Therefore, in recent years, the low earth orbit satellite is more suitable for mobile communication, such as global communication services for satellite phones, vehicle-mounted, ship-mounted, and aircraft-mounted mobile terminals, etc., to realize communication between mobile users or between mobile users and fixed users.
[0032] However, the inventors have found that the terminal for communicating with the low earth orbit satellite has high power consumption and high cost.
[0033] Therefore, in order to overcome the above defects, the embodiments of the present application provide a radio frequency transceiver circuit and a vehicle.
[0034] Please refer to Figure 1 , Figure 1 The structure block diagram of the radio frequency transceiver circuit provided by the embodiments of the present application is shown. Figure 1 The radio frequency transceiver circuit 100 shown includes a switch module 110, a first amplification module 120, a second amplification module 130, a channel multiplexing module 140, and a transceiver control module 150.
[0035] The first port 111 of the switch module 110 is connected with the output port 125 of the first amplification module 120, the second port 112 of the switch module 110 is connected with the input port 131 of the second amplification module 130, the control port 113 of the switch module 110 is connected with the output port 155 of the transceiver control module 150, and the third port 114 of the switch module 110 is externally connected with a radio frequency antenna 191.
[0036] The transceiver control module 150 can send a control signal through the output port 155. Thus, the switch module 110 is configured to turn on the first port 111 of the switch module 110 and the third port 114 of the switch module 110, or turn on the second port 112 of the switch module 110 and the third port 112 of the switch module 110, based on the control signal received by the control port 113 of the switch module 110.
[0037] Further, the input port 121 of the first amplification module 120 is connected to the first port 141 of the channel multiplexing module 140, and the control port 126 of the first amplification module 120 is connected to the output port 155 of the transceiver control module 150.
[0038] The first amplification module 120 can be activated or deactivated based on the control signal received by the control port 126.
[0039] In addition, the output port 135 of the second amplification module 130 is connected to the second port 142 of the channel multiplexing module 140. The first port 141 of the channel multiplexing module 140 is connected to the input port 151 of the transceiver control module 150, and the third port 143 of the channel multiplexing module 140 is connected to the radio frequency transceiver 192.
[0040] The radio frequency antenna 191 can receive a downlink signal from a low-orbit satellite, for example, the frequency band of the downlink signal can be 1518MHz-1525MHz. At this time, the switch module 110 can turn on the second port 112 of the switch module 110 and the third port 112 of the switch module 110 based on the control signal, so that the downlink signal received by the radio frequency antenna 191 can be input to the second amplification module 130 through the switch module 110, and then transmitted to the radio frequency transceiver 192 through the channel multiplexing module 140 after signal amplification, so that the radio frequency transceiver 192 successfully receives the downlink signal.
[0041] In addition, the radio frequency transceiver 192 can also generate an uplink signal for transmitting to a low-orbit satellite, for example, the frequency band of the uplink signal can be 1668MHz-1675MHz. At this time, the switch module 110 can turn on the first port 111 of the switch module 110 and the third port 114 of the switch module 110 based on the control signal, so that the uplink signal generated by the radio frequency transceiver 192 can be transmitted to the radio frequency antenna 191 through the switch module 110 after being amplified by the first amplification module 120, and then radiated by the radio frequency antenna 191.
[0042] It can be understood that, since the frequency bands of the uplink signal and the downlink signal are not the same, the first amplification module 120 can be used to amplify the signal in the frequency band of the uplink signal, for example, power amplification. And the second amplification module 130 can be used to amplify the signal in the frequency band of the downlink signal, for example, low noise amplification.
[0043] In some embodiments, the switch module 110 can be a single-pole double-throw radio frequency switch.
[0044] Please refer to Figure 2 , Figure 2 The structure block diagram of the radio frequency transceiver circuit provided by the embodiment of the present application is shown. Figure 2 The radio frequency transceiver circuit 200 shown includes a switch module 110, a first amplification module 120, a second amplification module 130, a channel multiplexing module 140, and a transceiver control module 150. For details of the connection relationship, please refer to the foregoing embodiments, which will not be repeated here.
[0045] Optionally, the second amplification module 130 includes a filtering component 1301 and an amplification component 1302, the first input port 13011 of the filtering component 1301 is used as the input port 131 of the second amplification module 130, and the second output port 13022 of the amplification component 1302 is used as the output port of the second amplification module 130.
[0046] The first output port 13012 of the filtering component 1301 is connected with the second input port 13021 of the amplification component 1302. The filtering component 1301 is used to filter the input downlink signal, and the amplification component 1302 is used to amplify the downlink signal after filtering.
[0047] Optionally, please refer to Figure 3 , Figure 3 The structure block diagram of the radio frequency transceiver circuit provided by the embodiment of the present application is shown. Among them, Figure 3 The radio frequency transceiver circuit 300 shown includes a switch module 110, a first amplification module 120, a second amplification module 130, a channel multiplexing module 140, and a transceiver control module 150. For details of the connection relationship, please refer to the foregoing embodiments, which will not be repeated here.
[0048] In some embodiments, the filter assembly can include a first filter unit 13013 and a second filter unit 13014, the amplification assembly includes a first amplification unit 13023 and a second amplification unit 13024, the third input port 13015 of the first filter unit 13013 is the input port 131 of the second amplification module 130, and the fourth output port 13025 of the second amplification unit 13024 is the output port 135 of the second amplification module 130.
[0049] The third output port 13016 of the first filter unit 13013 is connected to the fifth input port 13026 of the first amplification unit 13023, the fifth output port 13027 of the first amplification unit 13023 is connected to the sixth input port 13017 of the second filter unit 13014, and the sixth output port 13018 of the second filter unit 13014 is connected to the fourth input port 13028 of the second amplification unit 13024.
[0050] The first filter unit 13013 is configured to attenuate frequency bands other than the first target frequency band in the downlink signal, the second filter unit 13014 is configured to attenuate harmonics of the first target frequency band in the downlink signal, and the first amplification unit 13023 and the second amplification unit 13024 are configured to amplify the first target frequency band in the downlink signal.
[0051] As described above, the downlink signal is generally a signal in the frequency band of 1518MHz-1525MHz, and therefore in some embodiments, the first target frequency band can be the frequency band of 1518MHz-1525MHz.
[0052] Further, the second amplification module can further include a first attenuation unit. Specifically, please refer to Figure 4 , Figure 4 The radio frequency transceiver circuit 400 shown in Figure 3 The radio frequency transceiver circuit shown in the first attenuation unit 13031.
[0053] The seventh output port 13032 of the first attenuation unit 13031 is the output port 135 of the second amplification module 130, and the seventh input port 13033 of the first attenuation unit 13031 is connected to the fourth output port 13025 of the second amplification unit 13024.
[0054] The first attenuation unit 13031 can be configured to adjust the gain.
[0055] In some embodiments, the first filter unit 13013 is a film bulk acoustic resonator (FBAR), the second filter unit 13014 is a surface acoustic wave (SAW) filter, and the first attenuation unit 13031 is a pi-type attenuation network.
[0056] Therefore, after passing through the switch module 110, the downlink signal is first input to the film bulk acoustic resonator, which can effectively attenuate the frequency bands other than the first target frequency band in the downlink signal; and then the downlink signal is passed through the surface acoustic wave filter to attenuate the harmonics of the first target frequency band, which can reduce the cost of the radio frequency transceiver circuit while meeting the receiving requirements of the radio frequency transceiver 192 on the downlink signal.
[0057] Please refer to Figure 5 , Figure 5 The structure block diagram of the radio frequency transceiver circuit provided by the embodiments of the present application is shown. Figure 5 The radio frequency transceiver circuit 500 shown includes a switch module 110, a first amplification module 120, a second amplification module 130, a channel multiplexing module 140, and a transceiver control module 150. For details of the connection relationship, please refer to the foregoing embodiments, which will not be described here.
[0058] Optionally, the first amplification module 120 includes a second attenuation unit 1201, a third filter unit 1202, and a third amplification unit 1203. The eighth input port 12011 of the second attenuation unit 1201 serves as the input port 121 of the first amplification module 120, the ninth output port 12031 of the third amplification unit 1203 serves as the output port 125 of the first amplification module 120, and the enable port 12032 of the third amplification unit 1203 serves as the control port 126 of the first amplification module 120.
[0059] Further, the eighth output port 12012 of the second attenuation unit 1201 is connected to the tenth input port 12021 of the third filter unit 1202. The tenth output port 12022 of the third filter unit 1202 is connected to the ninth input port 12033 of the third amplification unit 1203.
[0060] Among them, the second attenuation unit 1201 is used to attenuate the uplink signal, the third filter unit 1202 is used to attenuate the frequency bands other than the second target frequency band in the uplink signal, and the third amplification unit 1203 is used to amplify the second target frequency band in the uplink signal.
[0061] The radio frequency antenna 191 can also radiate an uplink signal to the low-orbit satellite, for example, the frequency band of the uplink signal is 1668-1675 MHz. Thus, the second target frequency band can be 1668-1675 MHz.
[0062] In some embodiments, the second attenuation unit 1201 can be a π-type attenuation network; the third filtering unit 1202 can be a surface acoustic wave filter; and the third amplification unit 1203 can be a power amplifier tube. The power of the signal amplified by the third amplification unit 1203 can be greater than or equal to 33 dBm.
[0063] Further, please refer to Figure 6 , Figure 6 A structure block diagram of a radio frequency transceiver circuit provided by an embodiment of the present application is shown. Figure 6 The radio frequency transceiver circuit 600 shown includes the switch module 110, the first amplification module 120, the second amplification module 130, the channel multiplexing module 140, and the transceiver control module 150. For the detailed introduction of the connection relationship, please refer to the foregoing embodiments, which will not be described herein again.
[0064] Optionally, the transceiver control module 150 includes a signal detection component 1501 and a comparator 1502. An eleventh input port 15021 of the signal detection component 1501 serves as an input port 151 of the transceiver control module 150, and a twelfth output port of the comparator 1502 serves as an output port 155 of the transceiver control module 150.
[0065] In addition, an eleventh output port 15012 of the signal detection component 1501 is connected with a twelfth input port 15022 of the comparator 1502.
[0066] In some embodiments, the signal detection component 1501 can be a detector tube. Through the detector tube, the input smaller uplink signal can be converted into a voltage signal and output to the comparator 1502.
[0067] The comparator 1502 can output a control signal according to the voltage signal, for example, the control signal can be represented as TR_ctrl. When the input voltage signal is less than or equal to the set transmission channel opening threshold, the comparator outputs a low level, so that the second port 112 of the switch module 110 and the third port 112 of the switch module 110 are conductive, which can control the radio frequency transceiver circuit to be in the receiving channel; when the transmission signal power is greater than the set transmission channel opening threshold, the comparator outputs a high level, so that the first port 111 of the switch module 110 and the third port 114 of the switch module 110 are conductive, which controls the radio frequency transceiver circuit to be in the transmission channel.
[0068] Please refer to Figure 7 ,Figure 7 A structural block diagram of a radio frequency transceiver circuit is shown. Figure 7 The radio frequency transceiver circuit 700 shown includes the switch module 110, the first amplification module 120, the second amplification module 130, the channel multiplexing module 140, and the transceiver control module 150. For details of the connection relationship, please refer to the foregoing embodiments, which will not be described here again.
[0069] The radio frequency transceiver circuit 700 further includes a power conversion module 160. The fourth port 144 of the channel multiplexing module 140 is connected to the input port 161 of the power conversion module 160. The thirteenth output port 162 of the power conversion module 160 is used to provide a first power source for the first amplification module. The fourteenth output port 163 of the power conversion module 160 is used to provide a second power source for the switch module 110, the second amplification module 130, and the transceiver control module 150, respectively.
[0070] Please continue to refer to Figure 7 In some embodiments, the power conversion module 160 can further include a DC converter 164 and a linear voltage regulator 165.
[0071] The fifteenth input port 1641 of the DC converter 164 is used as the input port 161 of the power conversion module 160. The sixteenth output port 1651 of the linear voltage regulator 165 is used as the fourteenth output port 163 of the power conversion module 160. The fifteenth output port 1642 of the DC converter 164 is used as the thirteenth output port 162 of the power conversion module 160.
[0072] The fifteenth output port 1642 of the DC converter 164 is further connected to the sixteenth input port 1652 of the linear voltage regulator 165.
[0073] The linear voltage regulator 165 can be a low dropout linear regulator (LDO).
[0074] For some embodiments, the input port 161 of the power conversion module 160 can input 8V DC. After voltage conversion by the DC converter 164, 5V DC voltage is output through the thirteenth output port 162 of the power conversion module 160. After conversion by the linear voltage regulator 165, 3.3V DC voltage is output through the fourteenth output port 163 of the power conversion module 160.
[0075] Further, please refer to Figure 8 , Figure 8 A structural block diagram of a radio frequency transceiver circuit is shown. Figure 8The radio frequency transceiver circuit 800 shown includes the switch module 110, the first amplification module 120, the second amplification module 130, the channel multiplexing module 140, and the transceiver control module 150. For details of the connection relationship, please refer to the foregoing embodiments, which will not be described here.
[0076] Further, the channel multiplexing module 140 includes a combiner 145 and a DC extraction component 146. The fifth port 1451 of the combiner 145 serves as the first port 141 of the channel multiplexing module 140, the sixth port 1452 of the combiner 145 serves as the second port 142 of the channel multiplexing module 140, the seventh port 1453 of the combiner 145 serves as the third port 143 of the channel multiplexing module 140, and the eighth port 1461 of the DC extraction component 146 serves as the fourth port 144 of the channel multiplexing module 140.
[0077] In addition, the ninth port 1462 of the DC extraction component 146 is connected to the seventh port 1453 of the combiner 145.
[0078] For some embodiments, the radio frequency transceiver 192 can transmit a DC voltage signal to the third port 143 of the channel multiplexing module 140, so that the DC voltage signal is extracted through the ninth port 1462 of the DC extraction component 146, and the extracted DC voltage signal is transmitted to the input port 161 of the power conversion module 160.
[0079] For example, the DC extraction component 146 can be a choke coil.
[0080] For details, please refer to the foregoing embodiments, which will not be described here. Figure 9 , Figure 9 A schematic diagram of a vehicle is shown. The vehicle 900 includes a radio frequency antenna 910, a radio frequency transceiver 920, and the radio frequency transceiver circuit 930 shown in the foregoing embodiments. The radio frequency transceiver circuit 930 is used to externally connect the radio frequency antenna 910 and the radio frequency transceiver 920, respectively. For details, please refer to the foregoing embodiments, which will not be described here.
[0081] The radio frequency transceiver circuit in the present application is connected to the radio frequency transceiver or the radio frequency antenna, which is convenient and has good electromagnetic compatibility. The radio frequency transceiver circuit in the present application is connected to the radio frequency transceiver or the radio frequency antenna, which is convenient and has good electromagnetic compatibility.
[0082] The above merely provides the specific examples of the present application, and does not limit the present application in any form. Although the present application has been disclosed with the preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make some more changes or modifications to the equivalent embodiments with the disclosed technical contents without departing from the technical solution of the present application. Any modification, change and equivalent modification of the above embodiments made according to the technical essence of the present application without departing from the technical solution of the present application still belong to the scope of the technical solution of the present application.
Claims
1. A radio frequency transceiver circuit, characterized in that, include: The module includes a switch module, a first amplifier module, a second amplifier module, a channel multiplexing module, and a transceiver control module. The first port of the switch module is connected to the output port of the first amplification module, the second port of the switch module is connected to the input port of the second amplification module, the control port of the switch module is connected to the output port of the transceiver control module, and the third port of the switch module is connected to an external radio frequency antenna. The switch module is used to connect the first port and the third port of the switch module, or connect the second port and the third port of the switch module, based on the control signal received by the control port. The input port of the first amplification module is connected to the first port of the channel multiplexing module, and the control port of the first amplification module is connected to the output port of the transceiver control module. The output port of the second amplification module is connected to the second port of the channel multiplexing module; The first port of the channel multiplexing module is connected to the input port of the transceiver control module, and the third port of the channel multiplexing module is connected to an external radio frequency transceiver.
2. The radio frequency transceiver circuit according to claim 1, characterized in that, The second amplification module includes a filtering component and an amplification component. The first input port of the filtering component serves as the input port of the second amplification module, and the second output port of the amplification component serves as the output port of the second amplification module. The first output port of the filtering component is connected to the second input port of the amplifying component; The filtering component is used to filter the input downlink signal, and the amplification component is used to amplify the filtered downlink signal.
3. The radio frequency transceiver circuit according to claim 2, characterized in that, The filtering component includes a first filtering unit and a second filtering unit, and the amplification component includes a first amplification unit and a second amplification unit. The third input port of the first filtering unit serves as the input port of the second amplification module, and the fourth output port of the second amplification unit serves as the output port of the second amplification module. The third output port of the first filtering unit is connected to the fifth input port of the first amplifying unit; The fifth output port of the first amplification unit is connected to the sixth input port of the second filtering unit, and the sixth output port of the second filtering unit is connected to the fourth input port of the second amplification unit. The first filtering unit is used to attenuate frequency bands other than the first target frequency band in the downlink signal, the second filtering unit is used to attenuate multiple harmonics of the first target frequency band in the downlink signal, and both the first amplification unit and the second amplification unit are used to amplify the first target frequency band in the downlink signal.
4. The radio frequency transceiver circuit according to claim 3, characterized in that, The second amplification module further includes a first attenuation unit, and the seventh output port of the first attenuation unit serves as the output port of the second amplification module; The seventh input port of the first attenuation unit is connected to the fourth output port of the second amplification unit.
5. The radio frequency transceiver circuit according to claim 4, characterized in that, The first filtering unit is a thin-film cavity acoustic resonant filter, the second filtering unit is a surface acoustic wave filter, and the first attenuation unit is a π-type attenuation network.
6. The radio frequency transceiver circuit according to claim 1, characterized in that, The first amplification module includes a second attenuation unit, a third filtering unit, and a third amplification unit. The eighth input port of the second attenuation unit serves as the input port of the first amplification module, the ninth output port of the third amplification unit serves as the output port of the first amplification module, and the enable port of the third amplification unit serves as the control port of the first amplification module. The eighth output port of the second attenuation unit is connected to the tenth input port of the third filtering unit; The tenth output port of the third filtering unit is connected to the ninth input port of the third amplifying unit; The second attenuation unit is used to attenuate the uplink signal, the third filtering unit is used to attenuate frequency bands other than the second target frequency band in the uplink signal, and the third amplification unit is used to amplify the second target frequency band in the uplink signal.
7. The radio frequency transceiver circuit according to claim 6, characterized in that, The transceiver control module includes a signal detection component and a comparator. The eleventh input port of the signal detection component serves as the input port of the transceiver control module, and the twelfth output port of the comparator serves as the output port of the transceiver control module. The eleventh output port of the signal detection component is connected to the twelfth input port of the comparator.
8. The radio frequency transceiver circuit according to claim 1, characterized in that, The radio frequency transceiver circuit also includes a power conversion module, and the fourth port of the channel multiplexing module is connected to the input port of the power conversion module; The thirteenth output port of the power conversion module is used to provide a first power supply to the first amplification module, and the fourteenth output port of the power conversion module is used to provide a second power supply to the switching module, the second amplification module and the transceiver control module respectively.
9. The radio frequency transceiver circuit according to claim 8, characterized in that, The channel multiplexing module includes a combiner and a DC extraction component. The fifth port of the combiner serves as the first port of the channel multiplexing module, the sixth port of the combiner serves as the second port of the channel multiplexing module, the seventh port of the combiner serves as the third port of the channel multiplexing module, and the eighth port of the DC extraction component serves as the fourth port of the channel multiplexing module. The ninth port of the DC extraction component is connected to the seventh port of the combiner.
10. A vehicle, characterized in that, Includes a radio frequency antenna, a radio frequency transceiver, and a radio frequency transceiver circuit as described in any one of claims 1-9; The radio frequency transceiver circuit is used to connect the radio frequency antenna and the radio frequency transceiver to each other.