A radio frequency power amplifier for Internet of Vehicles communications

Abstract

The present invention discloses a radio frequency power amplifier for vehicle networking communication, comprising an input four-way differential phase shift distribution and bias network, a first differential double-stacked amplifier, a second differential double-stacked amplifier, a third differential double-stacked amplifier, a fourth differential double-stacked amplifier, an inter-stage four-way differential matching and bias network, and an output four-way differential phase shift synthesis and bias network. The core architecture of the present invention adopts the high power and high gain characteristics of the double-stacked amplification network composed of field effect tubes in the radio frequency microwave band, and at the same time utilizes the good parasitic parameter suppression of the differential amplifier in the microwave frequency band, combined with the good power back-off efficiency characteristics of the double-stage Doherty drive amplification structure, so that the entire power amplifier obtains good high gain, high back-off efficiency and high power output capability.

Description

Technical Field

[0001] The present invention relates to the field of field effect transistor radio frequency power amplifiers and integrated circuits, and in particular to a radio frequency power amplifier chip circuit for vehicle networking communications (C-V2X) based on cellular technology and a transmitting module for vehicle networking communications (C-V2X) applications. Background Art

[0002] With the rapid development of 5G wireless communication systems and RF circuits, Internet of Vehicles communications based on 5.9GHz cellular technology also have unprecedented application space, and its RF front-end transceiver circuits are also developing towards high performance, high integration, and low power consumption. Therefore, the Internet of Vehicles communications market urgently needs the transmitter's RF power amplifier to have high linear output power and efficiency, reduce heat dissipation, and improve circuit stability, and the power amplifier chip is the key to meeting this market demand. However, when using integrated circuit technology to design the power amplifier chip circuit for the Internet of Vehicles communications market, its performance and cost are subject to certain constraints, mainly reflected in:

[0003] (1) The efficiency of the power amplifier is limited at high back-off power, and the power consumption is high: When traditional class AB power amplifiers amplify high peak-to-average ratio signals, their efficiency is low at high back-off power, and therefore the power consumption is high.

[0004] (2) Power gain is limited and insertion loss is significantly deteriorated: The 5.9 GHz frequency band is often implemented using a semiconductor process with lower cost and lower characteristic frequency. This results in the single-tube gain of the power amplifier being limited. In addition, as the frequency band increases, the parasitic parameters of the transistor increase, and the parasitic loss of the circuit deteriorates significantly, affecting the performance of the circuit.

[0005] (3) Limitations of using lumped parameter circuit design: When designing traditional lumped parameter RLC matching circuits in the 5.9 GHz band, it is still necessary to use devices with large chip areas such as inductors and capacitors. In addition, due to the increased substrate loss and low inductor Q value, this brings limitations to circuit design.

[0006] There are many common circuit structures with high linear output power and efficiency amplifiers. The most typical one is the Doherty single-ended power amplifier. However, it is difficult for the traditional Doherty single-ended power amplifier to meet the power amplifier index requirements of the Internet of Vehicles communication market at the same time. The main reasons are:

[0007] (1) When the traditional Doherty single-ended power amplifier is used to implement the 5.9 GHz frequency band circuit design, the back-off efficiency index is often poor due to the influence of parasitic parameters;

[0008] (2) When traditional Doherty single-ended power amplifiers are used to implement 5.9 GHz frequency band circuit designs, class AB driver amplifiers are often used to drive Doherty amplifiers. Therefore, when working at the back-off efficiency, under the gain compensation effect of the class AB amplifier, it is often impossible to simultaneously meet the good load-pulling effect of the Doherty amplifier main and auxiliary circuits under high back-off, resulting in reduced back-off efficiency and deterioration of linearity indicators.

[0009] In addition, the use of depletion-type field effect transistors often requires additional negative voltage supply, which will also increase the complexity of the circuit. Summary of the invention

[0010] The technical problem to be solved by the present invention is to provide a radio frequency power amplifier for vehicle networking communication, which combines the advantages of differential stacked amplifier technology and dual-stage Doherty drive technology, and has the advantages of high power, high gain and low cost in the radio frequency microwave band. At the same time, the enhanced field effect transistor is adopted to avoid the complex power supply circuit of the depletion transistor.

[0011] The technical solution of the present invention to solve the above technical problems is as follows: A radio frequency power amplifier for vehicle networking communication, characterized in that it includes an input four-way differential phase shift distribution and bias network, a first differential double stack amplifier, a second differential double stack amplifier, a third differential double stack amplifier, a fourth differential double stack amplifier, an inter-stage four-way differential matching and bias network, and an output four-way differential phase shift synthesis and bias network;

[0012] The input end of the input four-way differential phase shift distribution and bias network is the input end of the entire power amplifier, the first and third output ends thereof are connected to the first and second input ends of the first differential double-stack amplifier, the second and fourth output ends thereof are connected to the first and second input ends of the second differential double-stack amplifier, and the phases of the input end of the input four-way differential phase shift distribution and bias network and the first, second, third and fourth output end signals differ by 0 degrees, 90 degrees, 180 degrees and 270 degrees respectively;

[0013] The first and second output ends of the first differential double stack amplifier are connected to the first and second input ends of the inter-stage four-way differential matching and bias network; the first and second output ends of the second differential double stack amplifier are connected to the third and fourth input ends of the inter-stage four-way differential matching and bias network;

[0014] The first and second input ends of the third differential double-stack amplifier are connected to the first and second output ends of the inter-stage four-way differential matching and bias network, and the first and second output ends of the third differential double-stack amplifier are connected to the first and third output ends of the output four-way differential phase-shift synthesis and bias network; the first and second input ends of the fourth differential double-stack amplifier are connected to the third and fourth output ends of the inter-stage four-way differential matching and bias network, and the first and second output ends of the fourth differential double-stack amplifier are connected to the second and fourth output ends of the output four-way differential phase-shift synthesis and bias network, and the output end of the output four-way differential phase-shift synthesis and bias network differs from the first, second, third, and fourth input end signals by 270 degrees, 180 degrees, 90 degrees, and 0 degrees in phase, respectively;

[0015] The output end of the output four-way differential phase shift synthesis and bias network is the output end of the entire power amplifier.

[0016] Further, the input end of the input four-way differential phase shift distribution and bias network is connected to the inductor L1, the other end of the inductor L1 is connected to the same-name end of the primary coil of the coupling transformer T1 and the grounding capacitor C1, and the non-same-name end of the primary coil of the transformer T1 is grounded; the same-name end of the first secondary coil of the transformer T1 is connected to the first output end of the input four-way differential phase shift distribution and bias network, the non-same-name end of the first secondary coil of the transformer T1 is connected to the second output end of the input four-way differential phase shift distribution and bias network, the same-name end of the second secondary coil of the transformer T1 is connected to the third output end of the input four-way differential phase shift distribution and bias network, and the non-same-name end of the second secondary coil of the transformer T1 is connected to the fourth output end of the input four-way differential phase shift distribution and bias network. The middle taps of the first and second secondary coils of the transformer T1 are interconnected through the structure of the inductor L2 in series with the resistor R1, and the middle tap of the first coil of the transformer T1 is also connected to the inductor L3, and the other end of the inductor L3 is connected to the bypass grounding capacitor C2 and the gate voltage V g1 .

[0017] The beneficial effect of the above further scheme is that the input four-way differential phase shift distribution and bias network used in the present invention can not only realize the power distribution of the input RF signal, but also perform impedance matching and phase adjustment on the RF input signal, and realize the conversion of single-ended signal to differential signal, and ensure the phase difference of differential signal. Among them, the phase difference between the input end of the input four-way differential phase shift distribution and bias network and the first, second, third and fourth output end signals is 0 degree, 90 degree, 180 degree and 270 degree respectively, so that the signal phase difference between the first input end and the second input end of the first and second differential double stack amplifiers is 180 degrees, and the relative phase difference between the input ports of the first and second differential double stack amplifiers is 90 degrees, thereby realizing an input phase difference similar to that of Doherty amplifier.

[0018] Furthermore, the first input terminal of the Nth differential double stack amplifier is connected to the grounding capacitor C pj and inductor L pj , L pj The other end is connected to the ground resistor R pj and transistor M pj The gate, M pj The source of M is grounded. pj The drain of transistor M is connected sj The source of transistor M sj The gate connection ground capacitor C sj , while M sj With M pj The gates are connected by a resistor R sj Connect, M sj The drain of the connected feedback resistor R mj and inductor L sj , resistor R mj The other end is connected to M sj The gate inductor L sj The other end of the capacitor C is connected to ground uj and the first output terminal of the Nth differential double stack amplifier. Similarly, the second input terminal of the Nth differential double stack amplifier is connected to the grounding capacitor C qj and inductor L qj , L qj The other end is connected to the ground resistor R qj and transistor M qj The gate, M qj The source of M is grounded. qj The drain of transistor M is connected tj The source of transistor M tj The gate connection ground capacitor C tj , while M tj With M qj The gates are connected by a resistor R tj Connect, M tj The drain of the feedback resistor R nj and inductor L tj , resistor R nj The other end is connected to M tj The gate inductor L tj The other end of the capacitor C is connected to ground vj and the second output terminal of the Nth differential double stack amplifier, transistor M tj The drain and M sj The drain is connected through a capacitor R ojInterconnected, wherein N is 1, 2, 3, 4, and j = 1, 2, 3, 4. The first and third differential double stack amplifiers work in a deep class AB amplification state, and the second and fourth differential double stack amplifiers work in a shallow class C amplification state. The Doherty amplifier structure composed of the first to fourth differential double stack amplifiers can significantly improve the power amplifier efficiency under high back-off power.

[0019] The beneficial effect of the above further scheme is: the differential amplifier structure adopted in the design structure of the Nth differential dual stacked amplifier of the present invention can suppress the deterioration of the circuit indicators caused by the high-frequency parasitic parameters of the transistor. At the same time, the dual stacked amplifier structure can improve the power capacity and power gain of the power amplifier, and improve the output impedance and load capacity of the amplifier.

[0020] Further, the first and second input ends of the interstage four-way differential matching and bias network are connected to the same-name end and the non-same-name end of the primary coil of the transformer T2, the third and fourth input ends of the interstage four-way differential matching and bias network are connected to the non-same-name end and the same-name end of the primary coil of the transformer T3, the middle tap of the primary coil of the transformer T2 and the middle tap of the primary coil of the transformer T3 are interconnected through the inductor L5, and the middle tap of the primary coil of the transformer T2 is also connected to the inductor L4, and the other end of the inductor L4 is connected to the bypass grounding capacitor C3 and the drain voltage V d1 The first and second output ends of the interstage four-way differential matching and bias network are connected to the same-name end and the non-same-name end of the secondary coil of the transformer T2, and the third and fourth input ends of the interstage four-way differential matching and bias network are connected to the non-same-name end and the same-name end of the secondary coil of the transformer T3. The middle tap of the secondary coil of the transformer T2 and the middle tap of the secondary coil of the transformer T3 are interconnected through the structure of the inductor L7 in series with the resistor R2. At the same time, the middle tap of the secondary coil of the transformer T2 is also connected to the inductor L6, and the other end of the inductor L6 is connected to the bypass grounding capacitor C4 and the gate voltage V g2 .

[0021] The beneficial effect of the above further scheme is that the present invention adopts inter-stage four-way differential matching and bias network to improve the impedance matching between amplifier stages, improve the gain and efficiency of the power amplifier, optimize the power supply mode of the power amplifier, and improve the circuit stability.

[0022] Further, the first and second input ends of the output four-way differential phase-shift synthesis and bias network are connected to the non-same-name end and the same-name end of the first secondary coil of the transformer T4, the third and fourth input ends of the output four-way differential phase-shift synthesis and bias network are connected to the non-same-name end and the same-name end of the second secondary coil of the transformer T4, the middle taps of the first and second secondary coils of the transformer T4 are interconnected through an inductor L8, the middle tap of the first secondary coil of the transformer T4 is also connected to an inductor L9, and the other end of L9 is connected to a bypass grounding capacitor C5 and a drain bias voltage Vd2 , the same-name end of the primary coil of transformer T4 is connected to the inductor L 10 and grounding capacitor C6, inductor L 10 The other end is connected to the output end of the output four-way differential phase-shift synthesis and bias network, and the non-same-name end of the primary coil of the transformer T4 is grounded.

[0023] The beneficial effect of the above further scheme is that the output four-way differential phase shift synthesis and bias network adopted by the present invention can not only realize the power synthesis of four-way differential RF signals, but also convert the four-way differential signals into single-ended signals, with less insertion loss introduced, while ensuring the output power and efficiency of the amplifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a principle block diagram of the power amplifier of the present invention;

[0025] Figure 2 This is a circuit diagram of a power amplifier according to the present invention. DETAILED DESCRIPTION

[0026] Now, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the embodiments shown and described in the accompanying drawings are only exemplary and are intended to explain the principles and spirit of the present invention, rather than to limit the scope of the present invention.

[0027] An embodiment of the present invention provides a radio frequency power amplifier for vehicle network communication, including an input four-way differential phase shift distribution and bias network, a first differential double-stacked amplifier, a second differential double-stacked amplifier, a third differential double-stacked amplifier, a fourth differential double-stacked amplifier, an inter-stage four-way differential matching and bias network, and an output four-way differential phase shift synthesis and bias network.

[0028] like Figure 1 As shown, the input end of the input four-way differential phase shift distribution and bias network is the input end of the entire power amplifier, the first and third output ends thereof are connected to the first and second input ends of the first differential double-stack amplifier, the second and fourth output ends thereof are connected to the first and second input ends of the second differential double-stack amplifier, and the phases of the input end of the input four-way differential phase shift distribution and bias network and the first, second, third, and fourth output end signals differ by 0 degrees, 90 degrees, 180 degrees, and 270 degrees, respectively;

[0029] The first and second output ends of the first differential double stack amplifier are connected to the first and second input ends of the inter-stage four-way differential matching and bias network; the first and second output ends of the second differential double stack amplifier are connected to the third and fourth input ends of the inter-stage four-way differential matching and bias network;

[0030] The first and second input ends of the third differential double-stack amplifier are connected to the first and second output ends of the inter-stage four-way differential matching and bias network, and the first and second output ends of the third differential double-stack amplifier are connected to the first and third output ends of the output four-way differential phase-shift synthesis and bias network; the first and second input ends of the fourth differential double-stack amplifier are connected to the third and fourth output ends of the inter-stage four-way differential matching and bias network, and the first and second output ends of the fourth differential double-stack amplifier are connected to the second and fourth output ends of the output four-way differential phase-shift synthesis and bias network, and the output end of the output four-way differential phase-shift synthesis and bias network differs from the first, second, third, and fourth input end signals by 270 degrees, 180 degrees, 90 degrees, and 0 degrees in phase, respectively;

[0031] The output end of the output four-way differential phase shift synthesis and bias network is the output end of the entire power amplifier.

[0032] like Figure 2 As shown, the input end of the input four-way differential phase-shift distribution and bias network is connected to the inductor L1, the other end of the inductor L1 is connected to the same-name end of the primary coil of the coupling transformer T1 and the grounding capacitor C1, and the non-same-name end of the primary coil of the transformer T1 is grounded; the same-name end of the first secondary coil of the transformer T1 is connected to the first output end of the input four-way differential phase-shift distribution and bias network, the non-same-name end of the first secondary coil of the transformer T1 is connected to the second output end of the input four-way differential phase-shift distribution and bias network, the same-name end of the second secondary coil of the transformer T1 is connected to the third output end of the input four-way differential phase-shift distribution and bias network, and the non-same-name end of the second secondary coil of the transformer T1 is connected to the fourth output end of the input four-way differential phase-shift distribution and bias network. The middle taps of the first and second secondary coils of the transformer T1 are interconnected through the structure of the inductor L2 in series with the resistor R1, and the middle tap of the first coil of the transformer T1 is also connected to the inductor L3, and the other end of the inductor L3 is connected to the bypass grounding capacitor C2 and the gate voltage V g1 .

[0033] The first input terminal of the Nth differential double stack amplifier is connected to the grounded capacitor C pj and inductor L pj , L pj The other end is connected to the ground resistor R pj and transistor M pj The gate, M pj The source of M is grounded. pj The drain of transistor M is connected sj The source of transistor M sj The gate connection ground capacitor C sj , while M sj With M pj The gates are connected by a resistor R sj Connect, M sjThe drain of the feedback resistor R mj and inductor L sj , resistor R mj The other end is connected to M sj The gate inductor L sj The other end of the capacitor C is connected to ground uj and the first output terminal of the Nth differential double stack amplifier. Similarly, the second input terminal of the Nth differential double stack amplifier is connected to the grounding capacitor C qj and inductor L qj , L qj The other end is connected to the ground resistor R qj and transistor M qj The gate, M qj The source of M is grounded. qj The drain of transistor M is connected tj The source of transistor M tj The gate connection ground capacitor C tj , while M tj With M qj The gates are connected by a resistor R tj Connect, M tj The drain of the feedback resistor R nj and inductor L tj , resistor R nj The other end is connected to M tj The gate inductor L tj The other end of the capacitor C is connected to ground vj and the second output terminal of the Nth differential double stack amplifier, transistor M tj The drain and M sj The drain is connected through a capacitor R oj The first and third differential double stack amplifiers are interconnected, wherein N is one, two, three, or four, and j is 1, 2, 3, or 4. The first and third differential double stack amplifiers operate in a deep class AB amplification state, and the second and fourth differential double stack amplifiers operate in a shallow class C amplification state.

[0034] The first and second input ends of the interstage four-way differential matching and bias network are connected to the same-name end and the non-same-name end of the primary coil of the transformer T2, the third and fourth input ends of the interstage four-way differential matching and bias network are connected to the non-same-name end and the same-name end of the primary coil of the transformer T3, the middle tap of the primary coil of the transformer T2 and the middle tap of the primary coil of the transformer T3 are interconnected through the inductor L5, and the middle tap of the primary coil of the transformer T2 is also connected to the inductor L4, and the other end of the inductor L4 is connected to the bypass grounding capacitor C3 and the drain voltage V d1The first and second output ends of the interstage four-way differential matching and bias network are connected to the same-name end and the non-same-name end of the secondary coil of the transformer T2, and the third and fourth input ends of the interstage four-way differential matching and bias network are connected to the non-same-name end and the same-name end of the secondary coil of the transformer T3. The middle tap of the secondary coil of the transformer T2 and the middle tap of the secondary coil of the transformer T3 are interconnected through the structure of the inductor L7 in series with the resistor R2. At the same time, the middle tap of the secondary coil of the transformer T2 is also connected to the inductor L6, and the other end of the inductor L6 is connected to the bypass grounding capacitor C4 and the gate voltage V g2 .

[0035] The first and second input ends of the output four-way differential phase-shift synthesis and bias network are connected to the non-same-name end and the same-name end of the first secondary coil of the transformer T4, and the third and fourth input ends of the output four-way differential phase-shift synthesis and bias network are connected to the non-same-name end and the same-name end of the second secondary coil of the transformer T4. The middle taps of the first and second secondary coils of the transformer T4 are interconnected through an inductor L8. The middle tap of the first secondary coil of the transformer T4 is also connected to an inductor L9, and the other end of L9 is connected to a bypass grounding capacitor C5 and a drain bias voltage V d2 , the same-name end of the primary coil of transformer T4 is connected to the inductor L 10 and grounding capacitor C6, inductor L 10 The other end is connected to the output end of the output four-way differential phase-shift synthesis and bias network, and the non-same-name end of the primary coil of the transformer T4 is grounded.

[0036] Combine the following Figure 2 The specific working principle and process of the present invention are introduced:

[0037] The RF input signal is passed through the RF input port in After entering the circuit, the signal is input through a four-way differential phase shift distribution and bias network for impedance transformation and matching, and then simultaneously enters the input ends of the first and second differential double-stack amplifiers in the form of equal-power differential signals.

[0038] 1) When the differential signal power is lower than the saturation input power point of the first differential double-stack amplifier, only the first and third differential double-stack amplifiers work and have output signals, while the second and fourth differential double-stack amplifiers do not work and have no output signals. After the output end of the first differential double-stack amplifier outputs the RF signal, it enters the interstage four-way differential matching and bias network for impedance transformation matching, and then enters the input end of the third differential double-stack amplifier. After power amplification, it enters the output four-way differential phase shift synthesis and bias network, converts the differential signal into a single-ended signal, and then outputs it from the output end RF out Output;

[0039] 2) When the power of the differential signal is higher than the saturation input power point of the first differential double-stack amplifier, the first to fourth differential double-stack amplifiers are all working. After the output ends of the first and second differential double-stack amplifiers output four RF signals, they enter the interstage four-way differential matching and bias network for impedance transformation matching, and then enter the input ends of the third and fourth differential double-stack amplifiers respectively. After power amplification, they enter the output four-way differential phase shift synthesis and bias network respectively. After the four-way differential signals are power synthesized, they are converted into single-ended signals and then output from the output end RF out Output.

[0040] Based on the above circuit analysis, the RF power amplifier for vehicle networking communication proposed by the present invention is different from the previous amplifier structure based on integrated circuit technology in that the core architecture adopts a differential dual-stack amplifier and a transformer to achieve a structure equivalent to the Doherty power amplifier working mode:

[0041] The differential dual stack amplifier is very different in structure from the traditional single transistor, so we will not go into details here;

[0042] The difference between the differential double stack amplifier and the cascode differential amplifier is that the stack gate compensation capacitor of the common gate tube of the cascode transistor is a capacitor with a larger capacitance, which is used to realize the AC grounding of the gate, while the gate of the differential double stack amplifier is a matching capacitor with a smaller capacitance, which realizes the synchronous swing of the gate voltage, increases the circuit breakdown voltage and improves the impedance matching of the transistors between the stacks;

[0043] The use of a differential double-stacked amplifier to implement a Doherty structure amplifier can significantly improve the circuit's suppression characteristics for parasitic parameters and improve high-frequency circuit indicators compared to a traditional single-ended amplifier structure.

[0044] In the entire RF power amplifier for Internet of Vehicles communications, the size of the transistor and the sizes of other resistors and capacitors are determined after comprehensive consideration of various indicators such as the gain, back-off efficiency and output power of the entire circuit. Through subsequent layout design and reasonable layout, the required indicators can be better achieved, achieving high power output capability, high back-off efficiency, high power gain, and good input-output matching characteristics.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A radio frequency power amplifier for vehicle networking communication, characterized in that: It includes an input four-way differential phase shift distribution and bias network, a first differential double-stack amplifier, a second differential double-stack amplifier, a third differential double-stack amplifier, a fourth differential double-stack amplifier, an inter-stage four-way differential matching and bias network, and an output four-way differential phase shift synthesis and bias network; The input end of the input four-way differential phase shift distribution and bias network is the input end of the entire power amplifier, the first and third output ends thereof are connected to the first and second input ends of the first differential double-stack amplifier, and the second and fourth output ends thereof are connected to the first and second input ends of the second differential double-stack amplifier, and the phases of the input end of the input four-way differential phase shift distribution and bias network and the first, second, third and fourth output end signals differ by 0 degrees, 90 degrees, 180 degrees and 270 degrees respectively; The first and second output terminals of the first differential double-stack amplifier are connected to the first and second input terminals of the inter-stage four-way differential matching and bias network; The first and second output terminals of the second differential double-stack amplifier are connected to the third and fourth input terminals of the inter-stage four-way differential matching and bias network; The first and second input ends of the third differential double stack amplifier are connected to the first and second output ends of the inter-stage four-way differential matching and bias network, and the first and second output ends of the third differential double stack amplifier are connected to the first and third output ends of the output four-way differential phase shift synthesis and bias network; The first and second input terminals of the fourth differential double-stack amplifier are connected to the third and fourth output terminals of the inter-stage four-way differential matching and bias network, and the first and second output terminals of the fourth differential double-stack amplifier are connected to the second and fourth output terminals of the output four-way differential phase-shift synthesis and bias network, and the output terminals of the output four-way differential phase-shift synthesis and bias network are 270 degrees, 180 degrees, 90 degrees, and 0 degrees different in phase from the first, second, third, and fourth input terminal signals, respectively; The output end of the output four-way differential phase-shift synthesis and bias network is the output end of the entire power amplifier.

2. The radio frequency power amplifier for vehicle networking communication according to claim 1, characterized in that: The input end of the input four-way differential phase-shift distribution and bias network is connected to the inductor L1, the other end of the inductor L1 is connected to the same-name end of the primary coil of the coupling transformer T1 and the grounding capacitor C1, and the non-same-name end of the primary coil of the transformer T1 is grounded; the same-name end of the first secondary coil of the transformer T1 is connected to the first output end of the input four-way differential phase-shift distribution and bias network, the non-same-name end of the first secondary coil of the transformer T1 is connected to the second output end of the input four-way differential phase-shift distribution and bias network, the same-name end of the second secondary coil of the transformer T1 is connected to the third output end of the input four-way differential phase-shift distribution and bias network, and the non-same-name end of the second secondary coil of the transformer T1 is connected to the fourth output end of the input four-way differential phase-shift distribution and bias network. The middle taps of the first and second secondary coils of transformer T1 are connected to each other through the structure of inductor L2 in series with resistor R1. At the same time, the middle tap of the first coil of transformer T1 is also connected to inductor L3. The other end of inductor L3 is connected to bypass grounding capacitor C2 and gate voltage V g1 .

3. The radio frequency power amplifier for vehicle networking communication according to claim 1, characterized in that: The first input terminal of the Nth differential dual stack amplifier is connected to the grounding capacitor C pj and inductor L pj , L pj The other end is connected to the ground resistor R pj and transistor M pj The gate, M pj The source of M is grounded. pj The drain of transistor M is connected sj The source of transistor M sj The gate connection ground capacitor C sj , while M sj With M pj The gates are connected by a resistor R sj Connect, M sj The drain of the connected feedback resistor R mj and inductor L sj , resistor R mj The other end is connected to M sj The gate inductor L sj The other end of the capacitor C is connected to ground uj and the first output terminal of the Nth differential double stack amplifier. Similarly, the second input terminal of the Nth differential double stack amplifier is connected to the grounding capacitor C qj and inductor L qj , L qj The other end is connected to the ground resistor R qj and transistor M qj The gate, M qj The source of M is grounded. qj The drain of transistor M is connected tj The source of transistor M tj The gate connection ground capacitor C tj , while M tj With M qj The gates are connected by a resistor R tj Connect, M tj The drain of the connected feedback resistor R nj and inductor L tj , resistor R nj The other end is connected to M tj The gate inductor L tj The other end of the capacitor C is connected to ground vj and the second output terminal of the Nth differential double stack amplifier, transistor M tj The drain and M sj The drain is connected through a capacitor R oj Interconnection, where N is one, two, three, or four, and j = 1, 2, 3, or 4. The first and third differential double-stack amplifiers operate in a deep class AB amplification state, and the second and fourth differential double-stack amplifiers operate in a shallow class C amplification state.

4. The radio frequency power amplifier for vehicle networking communication according to claim 1, characterized in that: The first and second input ends of the interstage four-way differential matching and bias network are connected to the same-name end and the non-same-name end of the primary coil of the transformer T2, the third and fourth input ends of the interstage four-way differential matching and bias network are connected to the non-same-name end and the same-name end of the primary coil of the transformer T3, the middle tap of the primary coil of the transformer T2 and the middle tap of the primary coil of the transformer T3 are interconnected through the inductor L5, and the middle tap of the primary coil of the transformer T2 is also connected to the inductor L4, and the other end of the inductor L4 is connected to the bypass grounding capacitor C3 and the drain voltage V d1 The first and second output ends of the interstage four-way differential matching and bias network are connected to the same-name end and the non-same-name end of the secondary coil of the transformer T2, and the third and fourth input ends of the interstage four-way differential matching and bias network are connected to the non-same-name end and the same-name end of the secondary coil of the transformer T3. The middle tap of the secondary coil of the transformer T2 and the middle tap of the secondary coil of the transformer T3 are interconnected through the structure of the inductor L7 in series with the resistor R2. At the same time, the middle tap of the secondary coil of the transformer T2 is also connected to the inductor L6, and the other end of the inductor L6 is connected to the bypass grounding capacitor C4 and the gate voltage V g2 .

5. The radio frequency power amplifier for vehicle networking communication according to claim 1, characterized in that: The first and second input ends of the output four-way differential phase-shift synthesis and bias network are connected to the non-same-name end and the same-name end of the first secondary coil of the transformer T4, the third and fourth input ends of the output four-way differential phase-shift synthesis and bias network are connected to the non-same-name end and the same-name end of the second secondary coil of the transformer T4, the middle taps of the first and second secondary coils of the transformer T4 are interconnected through an inductor L8, the middle tap of the first secondary coil of the transformer T4 is also connected to an inductor L9, and the other end of L9 is connected to a bypass grounding capacitor C5 and a drain bias voltage V d2 , the same-name end of the primary coil of transformer T4 is connected to the inductor L 10 and grounding capacitor C6, inductor L 10 The other end is connected to the output end of the output four-way differential phase-shift synthesis and bias network, and the non-same-name end of the primary coil of the transformer T4 is grounded.

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