Radio frequency power dividing unit, radio frequency power dividing module and radio frequency receiving system

Abstract

The invention provides a radio frequency power division unit, a radio frequency power division module and a radio frequency receiving system. The radio frequency power division unit comprises a first low noise amplifier, a first single-pole single-throw radio frequency switch, a second single-pole single-throw radio frequency switch, a third single-pole single-throw radio frequency switch, a power divider, a fourth single-pole single-throw radio frequency switch and a fifth single-pole single-throw radio frequency switch; the input impedance of the input end of the power divider, the impedance of the first output end of the power divider and the impedance of the second output end of the power divider are all the same. According to the radio frequency power dividing unit in the embodiment, the impedance of the two output ends of the power divider can be completely matched with the input impedance of the transceiver connected with the rear stage of the power divider, so that the transmitted radio frequency energy cannot be reflected, and the maximum transmission of the radio frequency energy is realized.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technologies, and particularly to a radio frequency power splitting unit, a radio frequency power splitting module, and a radio frequency receiving system. Background Art

[0002] As one of the core components in a microwave radio frequency communication circuit, a power splitter is mainly used for power distribution. In a radio frequency receiving system, the performance of the power splitter directly affects the performance of a transceiver. As shown in the radio frequency receiving system Figure 1 This radio frequency receiving system consists of an antenna, an ASM, a duplexer, a low-noise amplification circuit, a power splitter, a transceiver, and a baseband processor. The ASM is a switching unit.

[0003] In the prior art, as shown in the radio frequency receiving system Figure 1 An antenna is used to receive signals. The signals received from the antenna are fed into the input end of the ASM. Through the ASM, the output port is selected. The output signal of the ASM is sent to the low-noise amplification circuit through the duplexer. Among them, there are two small low-noise amplifiers in the low-noise amplification circuit. The output of the low-noise amplification circuit has four states. The first state is that the radio frequency amplified signal of the second low-noise amplifier needs to be directly output from its own output end, and the radio frequency amplified signal of the first low-noise amplifier needs to be directly output from its own output end. The second state is that the radio frequency amplified signal of the second low-noise amplifier needs to be output from the output end of the first low-noise amplifier, and the radio frequency amplified signal of the first low-noise amplifier needs to be output from the output end of the second low-noise amplifier. The third state is that the second low-noise amplifier has a requirement for power splitting (split). The radio frequency amplified signal of the second low-noise amplifier is split into two, and is respectively output from the output port of the second low-noise amplifier and the output port of the first low-noise amplifier. At this time, the first low-noise amplifier does not work, and the method to implement the power splitting function is to use a double-pole double-throw switch (abbreviated as DPDT) to implement, that is, to use a double-pole double-throw switch to implement the power splitting function of the power splitter. The fourth state is that the radio frequency amplified signal of the low-noise amplification circuit is not output. Finally, the signal passing through the double-pole double-throw switch is input to the transceiver and then sent to the baseband processor.

[0004] From the above description, it can be seen that the way for the second low-noise amplifier to implement the power splitting function is to use a double-pole double-throw switch. Through this double-pole double-throw switch, the radio frequency amplified signal of the second low-noise amplifier is split into two. At this time, the first low-noise amplifier does not work, so there is no radio frequency amplified signal output through the switch. For example, if the input impedance of the double-pole double-throw switch is 50Ω, it has approximately The capacitance is divided into two by a switch, that is, the impedance of the two output terminals is 25Ω respectively. The latter stage of the double-pole double-throw switch also needs to be connected to a transceiver, and the input impedance of the transceiver is 50Ω. In this way, there will be a certain impedance mismatch. At this time, 1 / 3 of the energy will be reflected back, that is, the Voltage Standing Wave Ratio (VSWR) = 2, which will have an adverse impact on the operation of the transceiver. Moreover, the output of the double-pole double-throw switch needs to drive two transceivers, and each transceiver will cause impedance mismatch, so the maximum energy transmission cannot be achieved, thus having an adverse impact on the radio frequency communication system.

[0005] In summary, in the prior art, the method of using a single double-pole double-throw switch to achieve the power splitting function in a low-noise amplifier will cause 1 / 3 of the radio frequency energy to be reflected back, thus preventing the maximum transmission of radio frequency energy. Summary of the Invention

[0006] Aiming at the above deficiencies of the prior art, the present invention proposes a radio frequency power splitting unit, a radio frequency power splitting module and a radio frequency receiving system to solve the problem that in the prior art, the method of using a single double-pole double-throw switch to achieve the power splitting function in a low-noise amplifier will cause 1 / 3 of the radio frequency energy to be reflected back, thus preventing the maximum transmission of radio frequency energy.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions: In the first aspect, the present invention provides a radio frequency power splitting unit, which includes a first low-noise amplifier, a first single-pole single-throw radio frequency switch, a second single-pole single-throw radio frequency switch, a third single-pole single-throw radio frequency switch, a power splitter, a fourth single-pole single-throw radio frequency switch and a fifth single-pole single-throw radio frequency switch; The input end of the first low-noise amplifier is used to receive radio frequency signals; The control end of the first single-pole single-throw radio frequency switch is connected to the output end of the first low-noise amplifier, and the output end of the first single-pole single-throw radio frequency switch serves as the first radio frequency signal output end for outputting the first radio frequency signal; The control end of the second single-pole single-throw radio frequency switch is connected to the output end of the first low-noise amplifier, and the output end of the second single-pole single-throw radio frequency switch serves as the second radio frequency signal output end for outputting the second radio frequency signal; The control end of the third single-pole single-throw radio frequency switch is connected to the output end of the low-noise amplifier; The input end of the power splitter is connected to the output end of the third single-pole single-throw radio frequency switch, and the input impedance of the input end of the power splitter, the impedance of the first output end of the power splitter and the impedance of the second output end of the power splitter are all the same; The control terminal of the fourth single-pole single-throw RF switch is connected to the first output terminal of the power divider, and the output terminal of the fourth single-pole single-throw RF switch is connected to the output terminal of the first single-pole single-throw RF switch; The control terminal of the fifth single-pole single-throw RF switch is connected to the second output terminal of the power divider, and the output terminal of the fifth single-pole single-throw RF switch is connected to the output terminal of the second single-pole single-throw RF switch.

[0008] Preferably, the power divider includes a first T-type impedance converter and a second T-type impedance converter; The input terminals of the first T-type impedance converter and the second T-type impedance converter together serve as the input terminal of the power divider; The output terminal of the first T-type impedance converter serves as the first output terminal of the power divider; The output terminal of the second T-type impedance converter serves as the second output terminal of the power divider.

[0009] Preferably, the first T-type impedance converter includes a first capacitor, a first inductor, and a second capacitor; The first end of the first capacitor serves as the input terminal of the first T-type impedance converter; The first end of the first inductor is connected to the second end of the first capacitor, and the second end of the first inductor is grounded; The first end of the second capacitor is connected to the first end of the first inductor, and the second end of the second capacitor serves as the output terminal of the first T-type impedance converter.

[0010] Preferably, the second T-type impedance converter includes a third capacitor, a second inductor, and a fourth capacitor; The first end of the third capacitor serves as the input terminal of the second T-type impedance converter; The first end of the second inductor is connected to the second end of the third capacitor, and the second end of the second inductor is grounded; The first end of the fourth capacitor is connected to the first end of the second inductor, and the second end of the fourth capacitor serves as the output terminal of the second T-type impedance converter.

[0011] Preferably, the capacitance values of the first capacitor, the second capacitor, the third capacitor, and the fourth capacitor are all 0.1 pF to 2 pF.

[0012] Preferably, the inductance values of the first inductor and the second inductor are both 0.5 nH to 5 nH.

[0013] Preferably, the power divider further includes a resistor; both ends of the resistor are respectively connected to the output terminal of the first T-type impedance converter and the output terminal of the second T-type impedance converter.

[0014] In a second aspect, the present invention provides a radio frequency power splitting module, which includes a radio frequency amplification unit and the radio frequency power splitting unit as described above; The radio frequency amplification unit includes a second low-noise amplifier and a single-pole double-throw radio frequency switch; The input end of the second low-noise amplifier is used to receive radio frequency signals; The common end of the single-pole double-throw radio frequency switch is connected to the output end of the second low-noise amplifier. The first connection end of the single-pole double-throw radio frequency switch is used to conduct and output a third radio frequency signal, and the second connection end of the single-pole double-throw radio frequency switch is used to conduct and output a fourth radio frequency signal; The input ends of the first low-noise amplifier and the second low-noise amplifier together serve as the input end of the radio frequency power splitting module. The first connection end of the single-pole double-throw radio frequency switch is connected to the output end of the first single-pole single-throw radio frequency switch and serves as the first output end of the radio frequency power splitting module. The second connection end of the single-pole double-throw radio frequency switch is connected to the output end of the second single-pole single-throw radio frequency switch and serves as the second output end of the radio frequency power splitting module.

[0015] In a third aspect, the present invention provides a radio frequency receiving system, which includes an antenna, a switch unit, a duplexer, the radio frequency power splitting module as described above, a transceiver, and a baseband processor; The antenna is used to receive radio frequency signals; The first connection end of the switch unit is connected to the antenna and is used to select an output channel; The input end of the duplexer is connected to the second connection end of the switch unit and is used to filter out the noise of the received radio frequency signals; The input end of the radio frequency power splitting module is connected to the output end of the duplexer; The input ends of the transceiver are respectively connected to the first output end and the second output end of the radio frequency power splitting module, and are used to receive the radio frequency signals sent by the radio frequency power splitting module and send the received radio frequency signals to the baseband processor; The input end of the baseband processor is connected to the output end of the transceiver and is used to perform data processing and storage on the received radio frequency signals.

[0016] Compared with the prior art, in the radio frequency power splitting unit of the present invention, by defining that the input impedance of the input end of the power splitter, the impedance of the first output end of the power splitter, and the impedance of the second output end of the power splitter are all the same, the impedance of the two output ends of the power splitter can be made to be exactly matched with the input impedance of the transceiver connected to its subsequent stage, so that the radio frequency energy transmitted by it will not be reflected, thereby achieving the maximum transmission of radio frequency energy. Description of the Drawings

[0017] The present invention will be described in detail below with reference to the accompanying drawings. Through the detailed description made in conjunction with the following drawings, the above or other aspects of the present invention will become clearer and easier to understand. In the drawings: Figure 1 is the circuit schematic diagram of the radio frequency receiving system provided by the prior art; Figure 2 is the circuit schematic diagram of the radio frequency power splitting module provided by the embodiment of the present invention; Figure 3 is the circuit schematic diagram of the radio frequency receiving system provided by the embodiment of the present invention. Detailed Embodiments

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and are not used to describe a specific order.

[0019] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0021] Embodiment 1 The embodiment of the present invention provides a radio frequency power splitting unit 110, as Figure 2 shown, which includes a first low-noise amplifier LNA1, a first single-pole single-throw radio frequency switch S1, a second single-pole single-throw radio frequency switch S2, a third single-pole single-throw radio frequency switch S3, a power splitter 111, a fourth single-pole single-throw radio frequency switch S4, and a fifth single-pole single-throw radio frequency switch S5.

[0022] The input end of the first low-noise amplifier LNA1 is used to receive radio frequency signals.

[0023] The control end of the first single-pole single-throw radio frequency switch S1 is connected to the output end of the first low-noise amplifier LNA1, and the output end of the first single-pole single-throw radio frequency switch S1 serves as the first radio frequency signal output end for outputting the first radio frequency signal.

[0024] The control end of the second single-pole single-throw radio frequency switch S2 is connected to the output end of the first low-noise amplifier LNA1, and the output end of the second single-pole single-throw radio frequency switch S2 serves as the second radio frequency signal output end for outputting the second radio frequency signal.

[0025] The control end of the third single-pole single-throw radio frequency switch S3 is connected to the output end of the low-noise amplifier.

[0026] The input end of the power splitter 111 is connected to the output end of the third single-pole single-throw radio frequency switch S3. The input impedance of the input end of the power splitter 111, the impedance of the first output end of the power splitter 111, and the impedance of the second output end of the power splitter 111 are all the same. In this embodiment, the input impedance of the input end of the power splitter 111, the impedance of the first output end of the power splitter 111, and the impedance of the second output end of the power splitter 111 are all 50 Ω.

[0027] The control end of the fourth single-pole single-throw radio frequency switch S4 is connected to the first output end of the power splitter 111, and the output end of the fourth single-pole single-throw radio frequency switch S4 is connected to the output end of the first single-pole single-throw radio frequency switch S1.

[0028] The control end of the fifth single-pole single-throw radio frequency switch S5 is connected to the second output end of the power splitter 111, and the output end of the fifth single-pole single-throw radio frequency switch S5 is connected to the output end of the second single-pole single-throw radio frequency switch S2.

[0029] In this embodiment, the power splitter 111 includes a first T-type impedance converter 1111 and a second T-type impedance converter 1112.

[0030] The input ends of the first T-type impedance converter 1111 and the second T-type impedance converter 1112 together serve as the input end of the power splitter 111.

[0031] The output end of the first T-type impedance converter 1111 serves as the first output end of the power splitter 111.

[0032] The output end of the second T-type impedance converter 1112 serves as the second output end of the power splitter 111.

[0033] The first T-type impedance converter 1111 includes a first capacitor C1, a first inductor L1, and a second capacitor C2.

[0034] The first terminal of the first capacitor C1 serves as the input terminal of the first T-type impedance converter 1111.

[0035] The first terminal of the first inductor L1 is connected to the second terminal of the first capacitor C1, and the second terminal of the first inductor L1 is grounded.

[0036] The first terminal of the second capacitor C2 is connected to the first terminal of the first inductor L1, and the second terminal of the second capacitor C2 serves as the output terminal of the first T-type impedance converter 1111.

[0037] The second T-type impedance converter 1112 includes a third capacitor C3, a second inductor L2, and a fourth capacitor C4.

[0038] The first terminal of the third capacitor C3 serves as the input terminal of the second T-type impedance converter 1112.

[0039] The first terminal of the second inductor L2 is connected to the second terminal of the third capacitor C3, and the second terminal of the second inductor L2 is grounded.

[0040] The first terminal of the fourth capacitor C4 is connected to the first terminal of the second inductor L2, and the second terminal of the fourth capacitor C4 serves as the output terminal of the second T-type impedance converter 1112.

[0041] In this embodiment, the capacitance values of the first capacitor C1, the second capacitor C2, the third capacitor C3, and the fourth capacitor C4 are all 0.1 pF to 2 pF.

[0042] The inductance values of the first inductor L1 and the second inductor L2 are both 0.5 nH to 5 nH.

[0043] The power divider 111 further includes a resistor R; both ends of the resistor R are respectively connected to the output terminal of the first T-type impedance converter 1111 and the output terminal of the second T-type impedance converter 1112. The design of the resistor R can enhance the isolation between the first output terminal of the power divider 111 and the second output terminal of the power divider 111.

[0044] In the radio frequency power dividing unit 110 of this embodiment, when a radio frequency signal with an impedance of 50 Ω passes through the power divider 111, the first T-type impedance converter 1111 and the second T-type impedance converter 1112 of the power divider 111 convert the radio frequency signal. The signal power output from the output terminal of the first T-type impedance converter 1111 and the signal power output from the output terminal of the second T-type impedance converter 1112 will become 1 / 2 of the original radio frequency signal, and the output impedance will become 50 Ω. At this time, since the input impedance of the transceiver connected to the subsequent stage of the radio frequency power dividing unit 110 is also 50 Ω, the complete impedance matching between the two can be achieved, so that the radio frequency energy transmitted by the radio frequency power dividing unit 110 will not be reflected, thereby achieving the maximum transmission of radio frequency energy.

[0045] Compared with the prior art, in the RF power splitting unit 110 of this embodiment, by defining that the input impedance of the input end of the power splitter 111, the impedance of the first output end of the power splitter 111, and the impedance of the second output end of the power splitter 111 are all the same, the impedance of the two output ends of the power splitter 111 can be made to perfectly match the input impedance of the transceiver connected to its subsequent stage, so that the RF energy transmitted by it will not be reflected, thereby achieving the maximum transmission of RF energy.

[0046] Embodiment 2 An embodiment of the present invention provides an RF power splitting module 100, as Figure 2 shown, which includes an RF amplification unit 120 and the RF power splitting unit 110 in Embodiment 1.

[0047] The RF amplification unit 120 includes a second low-noise amplifier LNA2 and a single-pole double-throw RF switch S6.

[0048] The input end of the second low-noise amplifier LNA2 is used to receive RF signals.

[0049] The common end of the single-pole double-throw RF switch S6 is connected to the output end of the second low-noise amplifier LNA2. The first connection end of the single-pole double-throw RF switch S6 is used to conduct and output a third RF signal, and the second connection end of the single-pole double-throw RF switch S6 is used to conduct and output a fourth RF signal.

[0050] The input ends of the first low-noise amplifier LNA1 and the second low-noise amplifier LNA2 together serve as the input end of the RF power splitting module 100. The first connection end of the single-pole double-throw RF switch S6 is connected to the output end of the first single-pole single-throw RF switch S1 and serves as the first output end out1 of the RF power splitting module 100. The second connection end of the single-pole double-throw RF switch S6 is connected to the output end of the second single-pole single-throw RF switch S2 and serves as the second output end out2 of the RF power splitting module 100.

[0051] The working principle of the RF power splitter module 100 in this embodiment is as follows: When the RF amplified signal of the second low-noise amplifier LNA2 is output from the first output terminal of the RF power splitter module 100, the common terminal of the single-pole double-throw RF switch S6 is connected to the first connection terminal of the single-pole double-throw RF switch S6. When the RF amplified signal of the first low-noise amplifier LNA1 is output from the second output terminal of the RF power splitter module 100, the second single-pole single-throw RF switch S2 is connected or opened, and the first single-pole single-throw RF switch S1, the third single-pole single-throw RF switch S3, the fourth single-pole single-throw RF switch S4, and the fifth single-pole single-throw RF switch S5 are all disconnected or closed. When the RF amplified signal of the second low-noise amplifier LNA2 is output from the second output terminal of the RF power splitter module 100, the common terminal of the single-pole double-throw RF switch S6 is connected to the second connection terminal of the single-pole double-throw RF switch S6. When the RF amplified signal of the first low-noise amplifier LNA1 is output from the first output terminal of the RF power splitter module 100, the first single-pole single-throw RF switch S1 is connected or opened, and the second single-pole single-throw RF switch S2, the third single-pole single-throw RF switch S3, the fourth single-pole single-throw RF switch S4, and the fifth single-pole single-throw RF switch S5 are all disconnected or closed. When the first low-noise amplifier LNA1 is in the power splitting mode and the second low-noise amplifier LNA2 is not working, the common terminal of the single-pole double-throw RF switch S6 is grounded, the first single-pole single-throw RF switch S1 and the second single-pole single-throw RF switch S2 are both disconnected or closed, and the third single-pole single-throw RF switch S3, the fourth single-pole single-throw RF switch S4, and the fifth single-pole single-throw RF switch S5 are all connected or opened. When both the first low-noise amplifier LNA1 and the second low-noise amplifier LNA2 are not working, the single-pole double-throw RF switch S6, the first single-pole single-throw RF switch S1, the second single-pole single-throw RF switch S2, the third single-pole single-throw RF switch S3, the fourth single-pole single-throw RF switch S4, and the fifth single-pole single-throw RF switch S5 are all grounded or disconnected, and no RF signal enters at this time.

[0052] Since the RF power splitter module 100 in this embodiment includes the RF power splitting unit 110 in the first embodiment, it can also achieve the technical effects achieved by the RF power splitting unit 110 in the first embodiment, which will not be elaborated here.

[0053] Embodiment III This embodiment provides an RF receiving system 200. As shown in combination with Figure 2 and Figure 3 it includes an antenna 201, a switch unit 202, a duplexer 203, the RF power splitter module 100 in the second embodiment, a transceiver 206, and a baseband processor 207.

[0054] The antenna 201 is used to receive RF signals.

[0055] A first connection end of the switch unit 202 is connected to the antenna 201 for selecting an output channel.

[0056] The input end of the duplexer 203 is connected to the second connection end of the switch unit 202, and is used to filter noise of the received radio frequency signal. In this embodiment, the duplexer 203 is composed of a filter.

[0057] The input end of the RF power splitter module 100 is connected to the output end of the duplexer 203 .

[0058] The input end of the transceiver 206 is respectively connected to the first output end out1 of the RF power splitter module 100 and the second output end out2 of the RF power splitter module 100 , and is used to receive the RF signal sent by the RF power splitter module 100 and send the received RF signal to the baseband processor 207 .

[0059] The input end of the baseband processor 207 is connected to the output end of the transceiver 206 for performing data processing and storage on the received RF signal.

[0060] In this embodiment, the input impedance of the input end of the transceiver 206 is 50Ω.

[0061] like Figure 3 As shown, the first low noise amplifier LNA1 and the second low noise amplifier LNA2 in the RF power division module 100 constitute a conventional low noise amplifier circuit 204, and the first single-pole single-throw RF switch S1, the second single-pole single-throw RF switch S2, the third single-pole single-throw RF switch S3, the power divider 111, the fourth single-pole single-throw RF switch S4, the fifth single-pole single-throw RF switch S5 and the single-pole double-throw RF switch S6 constitute a power divider switch combination unit 205.

[0062] Since the RF receiving system 200 in this embodiment includes the RF power division module 100 in the second embodiment, it can also achieve the technical effects achieved by the RF power division module 100 in the second embodiment, which will not be elaborated here.

[0063] It should be noted that the various embodiments described above with reference to the accompanying drawings are only used to illustrate the present invention rather than to limit the scope of the present invention. Those skilled in the art should understand that any modification or equivalent substitution of the present invention without departing from the spirit and scope of the present invention should be included within the scope of the present invention. In addition, unless otherwise indicated by the context, words appearing in the singular include the plural form, and vice versa. In addition, unless otherwise specified, all or part of any embodiment may be used in combination with all or part of any other embodiment.

Claims

1. A radio frequency power splitter unit, characterized in that: The radio frequency power division unit includes a first low noise amplifier, a first single-pole single-throw radio frequency switch, a second single-pole single-throw radio frequency switch, a third single-pole single-throw radio frequency switch, a power divider, a fourth single-pole single-throw radio frequency switch and a fifth single-pole single-throw radio frequency switch; The input end of the first low noise amplifier is used to receive a radio frequency signal; The control end of the first single-pole single-throw radio frequency switch is connected to the output end of the first low-noise amplifier, and the output end of the first single-pole single-throw radio frequency switch serves as a first radio frequency signal output end for outputting a first radio frequency signal; The control end of the second single-pole single-throw radio frequency switch is connected to the output end of the first low-noise amplifier, and the output end of the second single-pole single-throw radio frequency switch serves as a second radio frequency signal output end for outputting a second radio frequency signal; The control end of the third single-pole single-throw radio frequency switch is connected to the output end of the low noise amplifier; The input end of the power divider is connected to the output end of the third single-pole single-throw radio frequency switch, and the input impedance of the input end of the power divider, the impedance of the first output end of the power divider, and the impedance of the second output end of the power divider are all the same; The control end of the fourth single-pole single-throw radio frequency switch is connected to the first output end of the power divider, and the output end of the fourth single-pole single-throw radio frequency switch is connected to the output end of the first single-pole single-throw radio frequency switch; The control end of the fifth single-pole single-throw radio frequency switch is connected to the second output end of the power divider, and the output end of the fifth single-pole single-throw radio frequency switch is connected to the output end of the second single-pole single-throw radio frequency switch.

2. The radio frequency power splitter unit according to claim 1, characterized in that: The power divider includes a first T-type impedance converter and a second T-type impedance converter; The input end of the first T-type impedance converter and the input end of the second T-type impedance converter are used together as the input end of the power divider; The output end of the first T-type impedance converter serves as the first output end of the power divider; The output end of the second T-type impedance converter serves as the second output end of the power divider.

3. The radio frequency power splitter unit according to claim 2, characterized in that: The first T-type impedance converter includes a first capacitor, a first inductor and a second capacitor; The first end of the first capacitor serves as an input end of the first T-type impedance converter; The first end of the first inductor is connected to the second end of the first capacitor, and the second end of the first inductor is grounded; The first end of the second capacitor is connected to the first end of the first inductor, and the second end of the second capacitor serves as an output end of the first T-type impedance converter.

4. The radio frequency power splitter unit according to claim 3, characterized in that: The second T-type impedance converter includes a third capacitor, a second inductor and a fourth capacitor; The first end of the third capacitor serves as an input end of the second T-type impedance converter; The first end of the second inductor is connected to the second end of the third capacitor, and the second end of the second inductor is grounded; The first end of the fourth capacitor is connected to the first end of the second inductor, and the second end of the fourth capacitor serves as an output end of the second T-type impedance converter.

5. The radio frequency power splitter unit according to claim 4, characterized in that: The capacitance values ​​of the first capacitor, the second capacitor, the third capacitor and the fourth capacitor are all 0.1 pF-2 pF.

6. The radio frequency power splitter unit according to claim 5, characterized in that: The inductance values ​​of the first inductor and the second inductor are both 0.5nH~5nH.

7. The radio frequency power splitter unit according to claim 2, characterized in that: The power divider further includes a resistor; two ends of the resistor are respectively connected to an output end of the first T-type impedance converter and an output end of the second T-type impedance converter.

8. A radio frequency power splitter module, characterized in that: The RF power splitter module comprises a RF amplification unit and a RF power splitter unit according to any one of claims 1 to 7; The radio frequency amplification unit includes a second low noise amplifier and a single-pole double-throw radio frequency switch; The input end of the second low noise amplifier is used to receive a radio frequency signal; The common end of the single-pole double-throw RF switch is connected to the output end of the second low-noise amplifier, the first connection end of the single-pole double-throw RF switch is used to conduct and output the third RF signal, and the second connection end of the single-pole double-throw RF switch is used to conduct and output the fourth RF signal; The input end of the first low-noise amplifier and the input end of the second low-noise amplifier jointly serve as the input end of the RF power splitter module, the first connection end of the single-pole double-throw RF switch is connected to the output end of the first single-pole single-throw RF switch and serves as the first output end of the RF power splitter module, and the second connection end of the single-pole double-throw RF switch is connected to the output end of the second single-pole single-throw RF switch and serves as the second output end of the RF power splitter module.

9. A radio frequency receiving system, characterized in that: The radio frequency receiving system comprises an antenna, a switch unit, a duplexer, the radio frequency power division module according to claim 8, a transceiver and a baseband processor; The antenna is used to receive radio frequency signals; The first connection end of the switch unit is connected to the antenna and is used to select an output channel; The input end of the duplexer is connected to the second connection end of the switch unit, and is used to filter the noise of the received radio frequency signal; The input end of the RF power division module is connected to the output end of the duplexer; The input end of the transceiver is respectively connected to the first output end of the RF power splitter module and the second output end of the RF power splitter module, and is used to receive the RF signal sent by the RF power splitter module and send the received RF signal to the baseband processor; The input end of the baseband processor is connected to the output end of the transceiver, and is used for performing data processing and storage on the received radio frequency signal.

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