A power amplifier architecture for broadband microwave signal mixing and a method of operation thereof

Abstract

The application provides a power amplifier architecture for broadband microwave signal mixing and a working method thereof. The power amplifier architecture comprises a continuous wave microwave signal source S1, a synchronization signal source S2, a pulse signal source S3, a broadband phase shifter or a delay device D1, a broadband power amplifier A1, a broadband power amplifier A2, a broadband power amplifier A3, a bridge H1, a bridge H2, an isolation resistor R1, a directional coupler C1, a directional coupler C2, a directional coupler C3 and a directional coupler C4. The power amplifier architecture realized by the application is used for seamless mixing of broadband high-power microwave signals, and the mixing ratio, frequency and signal pattern are not limited, and the cost of a micro-power test system can be greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of broadband microwave signal mixing technology, and more specifically, to a power amplifier architecture for broadband microwave signal mixing and its operating method. Background Technology

[0002] In aerospace applications, high-power radio frequency signals in space often cause "micro-discharge" phenomena in components, leading to serious system failures. To simulate this phenomenon, a pulse signal of more than 10 times its strength needs to be superimposed on a continuous wave signal of a certain intensity, forming a mixed signal of continuous wave and pulse with a specific peak-to-average power ratio (PAPR), and the output peak power is in the kilowatt range. Aerospace applications involve frequency bands ranging from the C-band to the Ka-band; to ensure high utilization efficiency and strong testing capabilities, the test equipment must possess wideband and high-power characteristics.

[0003] Pulsed devices have high peak power, but they cannot operate under continuous wave conditions, resulting in low average power. On the other hand, continuous wave devices have relatively low peak power, and high peak power output requires high cost. Since the signal patterns required for micro-discharge testing, pulse peak power needs to be several kilowatts, while continuous wave power needs to be several hundred watts, high-power pulsed devices are difficult to be compatible with continuous wave output. Therefore, most current designs use continuous wave devices and are designed according to the highest power, resulting in high overall cost and large size of the device.

[0004] Another approach is to use a phase difference meter or a high-speed, high-power switch for switching. However, this method has a narrow bandwidth and low power, limiting its application scenarios. Firstly, due to material limitations, current phase difference meters have a bandwidth of only about 15% and a maximum power in the high-frequency band in the hundreds of watts range, which cannot meet the requirements for wide-bandwidth, high-power operation needed for testing. Secondly, the switching time of a phase difference meter switch requires several microseconds and cannot be switched under load, placing strict timing requirements on it. Meanwhile, the testing requirements for micro-discharge breakdown are on the order of nanoseconds. Therefore, the accuracy of the test is limited, making it difficult to meet the needs of practical applications.

[0005] In summary, for scenarios such as micro-discharge testing in aerospace applications, a hybrid circuit architecture with wide bandwidth and high power is needed to amplify continuous wave and pulse signals separately to reduce the overall cost, and then seamlessly superimpose and synthesize the amplified continuous wave and pulse signals. It should also have the characteristics of short switching time and high circuit reliability. Summary of the Invention

[0006] The present invention aims to provide a power amplifier architecture and its operating method for broadband microwave signal mixing, so as to solve the contradiction between several factors such as broadband high power, seamless superposition of continuous wave and pulse, high reliability and low cost.

[0007] The present invention provides a power amplifier architecture for broadband microwave signal mixing, comprising a continuous wave microwave signal source S1, a synchronization signal source S2, a pulse signal source S3, a broadband phase shifter or delayer D1, a broadband power amplifier A1, a broadband power amplifier A2, a broadband power amplifier A3, a bridge H1, a bridge H2, an isolation resistor R1, a directional coupler C1, a directional coupler C2, a directional coupler C3, and a directional coupler C4;

[0008] The signal output port 1 of the continuous wave microwave signal source S1 is connected sequentially to port 3 of bridge H2 via broadband phase shifter or delayer D1, broadband power amplifier A1, and the through terminal of directional coupler C1; the synchronization controlled port 2 of the continuous wave microwave signal source S1 is connected to the signal output port 1 of the synchronization signal source S2; the signal output port 3 of the pulse signal source S3 is connected to the control ports 3 of broadband power amplifiers A2 and A3 respectively; the signal output port 1 of the pulse signal source S3 is connected to port 1 of bridge H1; The synchronous controlled port 2 of the impulse signal source S3 is connected to the signal output port 2 of the synchronous signal source S2; port 2 of bridge H1 is grounded through isolation resistor R1; port 3 of bridge H1 is connected to port 1 of bridge H2 through the through port of broadband power amplifier A2 and directional coupler C2 in sequence; port 4 of bridge H1 is connected to port 2 of bridge H2 through the through port of broadband power amplifier A3 and directional coupler C3 in sequence; port 4 of bridge H2 is connected to the output port Pout of the power amplifier architecture through the through port of directional coupler C4.

[0009] Furthermore, the bridges H1 and H2 are 90° bridges.

[0010] Furthermore, the structures of the broadband power amplifier A1, broadband power amplifier A2, and broadband power amplifier A3 all include:

[0011] Power transistor Q1;

[0012] The input matching circuit is connected to the gate of the power transistor Q1;

[0013] Output matching circuit connected to the drain of power transistor Q1;

[0014] The source of power transistor Q1 in broadband power amplifier A1 is grounded; the source of power transistor Q1 in broadband power amplifiers A2 and A3 is connected to the signal output port 3 of pulse signal source S3.

[0015] Optionally, when the power amplifier architecture is used for micro-discharge testing, the broadband power amplifier A1 uses solid-state devices.

[0016] Optionally, when the power amplifier architecture is used for micro-discharge testing, the broadband power amplifier A2 and broadband power amplifier A3 are vacuum amplifiers.

[0017] Furthermore, the directional couplers C1, C2, C3, and C4 have power monitoring ports for power monitoring.

[0018] Furthermore, the method for operating the power amplifier architecture for broadband microwave signal mixing includes the following steps:

[0019] S100, the synchronization signal source S2 outputs a synchronization signal to the continuous wave microwave signal source S1 and the pulse signal source S3, and performs time synchronization control on the signals output by the continuous wave microwave signal source S1 and the pulse signal source S3, so that the signal output port 1 of the continuous wave microwave signal source S1 outputs a continuous wave microwave signal; the signal output ports 1 and 3 of the pulse signal source S3 output pulse signals corresponding to the time and phase of the continuous wave microwave signal.

[0020] S200, the continuous wave microwave signal is phase-shifted or delayed by a broadband phase shifter or delayer D1;

[0021] S300, the phase-shifted or delayed continuous wave microwave signal enters the broadband power amplifier A1, and the broadband power amplifier A1 outputs the amplified continuous wave microwave signal.

[0022] S400, the amplified continuous wave microwave signal reaches port 3 of bridge H2 through the through end of directional coupler C1;

[0023] S500, the pulse signal output port 1 of the pulse signal source S3 outputs a pulse signal into port 1 of the bridge H1, which is divided into two signals with a 90° phase difference, and output from port 3 and port 4 respectively;

[0024] S600, a pulse signal with a 90° phase shift is output from port 3 of bridge H1, which is amplified by broadband power amplifier A2. The amplified pulse signal then enters port 1 of bridge H2 through the through-hole of directional coupler C2. A pulse signal without phase shift is output from port 4 of bridge H1, which is amplified by broadband power amplifier A3. The amplified pulse signal then enters port 2 of bridge H2 through the through-hole of directional coupler C3.

[0025] S700, the bridge H2 inputs a pulse signal with a 90° phase shift from the output of the broadband power amplifier A2 at port 1, a pulse signal without phase shift from the output of the broadband power amplifier A3 at port 2, and a continuous wave microwave signal from the output of the broadband power amplifier A1 at port 3. After being synthesized at port 4, the signal is output to the output port Pout of the power amplifier architecture via the through end of the directional coupler C4.

[0026] Furthermore, during operation, the synthesis efficiency of bridge H2 is maximized by adjusting the phase shift or delay value of the broadband phase shifter or delayer D1.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0028] The power amplifier architecture implemented in this invention is used for seamless mixing of broadband high-power microwave signals. The mixing ratio, frequency, and signal pattern are not limited, which can greatly reduce the cost of micro-discharge test systems.

[0029] Specifically:

[0030] 1. The power amplifier architecture uses broadband components, which can output kilowatt-level power at the frequency multiplier layer.

[0031] 2. The internal amplification channel of the power amplifier architecture uses both high-peak pulse devices and high-average continuous wave devices to reduce costs.

[0032] 3. The isolation function of the internal bridge of the power amplifier architecture makes the two synthesized signals independent and do not interfere with each other, enabling it to support the synthesis of arbitrary style signals of different frequencies.

[0033] 4. The power amplifier architecture uses a phase shifter or delayer to adjust the synthesized phase, which can compensate for circuit differences and achieve the highest synthesis efficiency. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of a power amplifier architecture for broadband microwave signal mixing in an embodiment of the present invention.

[0036] Figure 2 This is a schematic diagram of the structure of the broadband power amplifier in an embodiment of the present invention.

[0037] Figure 3 This is a schematic diagram of the bridge synthesis characteristics in an embodiment of the present invention.

[0038] Figure 4 This is a schematic diagram of signal phase superposition in an embodiment of the present invention. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0041] Example

[0042] like Figure 1 As shown, this embodiment proposes a power amplifier architecture for broadband microwave signal mixing, including a continuous wave microwave signal source S1, a synchronization signal source S2, a pulse signal source S3, a broadband phase shifter or delayer D1, a broadband power amplifier A1, a broadband power amplifier A2, a broadband power amplifier A3, bridges H1 and H2, an isolation resistor R1, directional couplers C1, C2, C3, and C4; in this embodiment, bridges H1 and H2 are 90° bridges.

[0043] The signal output port 1 of the continuous wave microwave signal source S1 is connected sequentially to port 3 of bridge H2 via broadband phase shifter or delayer D1, broadband power amplifier A1, and the through terminal of directional coupler C1; the synchronization controlled port 2 of the continuous wave microwave signal source S1 is connected to the signal output port 1 of the synchronization signal source S2; the signal output port 3 of the pulse signal source S3 is connected to the control ports 3 of broadband power amplifiers A2 and A3 respectively; the signal output port 1 of the pulse signal source S3 is connected to port 1 of bridge H1; The synchronous controlled port 2 of the impulse signal source S3 is connected to the signal output port 2 of the synchronous signal source S2; port 2 of bridge H1 is grounded through isolation resistor R1; port 3 of bridge H1 is connected to port 1 of bridge H2 through the through port of broadband power amplifier A2 and directional coupler C2 in sequence; port 4 of bridge H1 is connected to port 2 of bridge H2 through the through port of broadband power amplifier A3 and directional coupler C3 in sequence; port 4 of bridge H2 is connected to the output port Pout of the power amplifier architecture through the through port of directional coupler C4.

[0044] The implementation principle of the power amplifier architecture for broadband microwave signal mixing is as follows:

[0045] S100, the synchronization signal source S2 outputs a synchronization signal to the continuous wave microwave signal source S1 and the pulse signal source S3, and performs time synchronization control on the signals output by the continuous wave microwave signal source S1 and the pulse signal source S3, so that the signal output port 1 of the continuous wave microwave signal source S1 outputs a continuous wave microwave signal; the signal output ports 1 and 3 of the pulse signal source S3 output pulse signals corresponding to the time and phase of the continuous wave microwave signal.

[0046] S200, the continuous wave microwave signal is phase-shifted or delayed by a broadband phase shifter or delayer D1;

[0047] The broadband phase shifter or delay unit D1 is used to adjust the phase or delay of the continuous wave microwave signal output from the continuous wave microwave signal source S1. It can perform phase adjustment from 0° to 360°, or delay adjustment from picoseconds to nanoseconds, depending on the purpose of the circuit. Phase Δφ and delay t d The relationship is shown in the following formula:

[0048]

[0049] As shown in the above formula, if the synthesis requires maintaining the same phase change across the entire frequency band, a wideband phase shifter should be chosen, but this will result in different signal transmission delays at different frequencies. If the requirement is to maintain the same time change across the entire frequency band, a wideband delayer should be chosen, but this will cause the signal phase change to vary with frequency. If both phase and time changes are minimal, corresponding control and compensation are needed for each frequency point, forming an internal inherent compensation table, with adjustments made at each frequency point. In summary, wideband phase shifters are used for phase synthesis, and delayers are used for time synthesis. Both can compensate for inherent differences in the circuits between channels or for inconsistencies caused by processing, ultimately enabling the multiple signals to be mixed to achieve synthesis, cancellation, or other desired states.

[0050] S300, the phase-shifted or delayed continuous wave microwave signal enters the broadband power amplifier A1, and the broadband power amplifier A1 outputs the amplified continuous wave microwave signal.

[0051] like Figure 2 As shown, the broadband power amplifier A1 includes:

[0052] Power transistor Q1;

[0053] The input matching circuit is connected to the gate of the power transistor Q1;

[0054] Output matching circuit connected to the drain of power transistor Q1;

[0055] The source of the power transistor Q1 in the broadband power amplifier A1 is grounded.

[0056] As can be seen, the core component of the broadband power amplifier A1 is the power transistor Q1. In order to achieve higher gain and output power, the input terminal of the broadband power amplifier A1 includes an input matching circuit IMN, and the output terminal includes an output matching circuit OMN.

[0057] S400, the amplified continuous wave microwave signal reaches port 3 of bridge H2 through the through end of directional coupler C1;

[0058] The through-hole terminals (port 1 and port 2) of the directional coupler C1 can transmit high-power signals with minimal loss. Port 3 is the forward coupling port and port 4 is the reverse coupling port, which couple out forward and reverse signals for detection and protection, respectively. Normally used for power monitoring, if a large reflection is detected, it can be dealt with in time.

[0059] The pulse signal output port 1 of the S500 pulse signal source S3 outputs a pulse signal into port 1 of the bridge H1, which is then split into two signals with a 90° phase difference, outputting from ports 3 and 4 respectively. Port 2 of the bridge H1 is an isolation port with no signal output. An isolation resistor R1 is connected to it to absorb the unbalanced and reflected signals from ports 3 and 4.

[0060] In S600, bridge H1 outputs a pulse signal with a 90° phase shift at port 3. This pulse signal is amplified by broadband power amplifier A2. The amplified pulse signal then passes through the through-hole terminals (ports 1 and 2) of directional coupler C2 and enters port 1 of bridge H2. Ports 3 and 4 of directional coupler C2 are used to detect the forward and reverse power of the output channel of broadband power amplifier A2, respectively, with the same function as directional coupler C1. Bridge H1 outputs a pulse signal without phase shift at port 4. This pulse signal is amplified by broadband power amplifier A3. The amplified pulse signal then passes through the through-hole terminals (ports 1 and 2) of directional coupler C3 and enters port 2 of bridge H2. Ports 3 and 4 of directional coupler C3 are used to detect the forward and reverse power of the output channel of broadband power amplifier A3, respectively, with the same function as directional coupler C1.

[0061] The structures of broadband power amplifiers A2 and A3 are similar to those of broadband power amplifier A1, except that the source of the power transistor Q1 in broadband power amplifiers A2 and A3 is connected to the signal output port 3 of the pulse signal source S3. Optionally, broadband power amplifiers A1, A2, and A3 can be the same or different to achieve different output powers or signal mixing effects.

[0062] In the S700 bridge, port 1 of bridge H2 receives a pulse signal with a 90° phase shift from the output of broadband power amplifier A2; port 2 receives a pulse signal without phase shift from the output of broadband power amplifier A3; and port 3 receives a continuous wave microwave signal from the output of broadband power amplifier A1. Figure 3 As shown, after being synthesized at port 4, the output is sent to the output port Pout of the power amplifier architecture via the through-hole of directional coupler C4. The function of directional coupler C4 is the same as that of directional coupler C1.

[0063] Figure 3 The detailed characteristics of bridge H2 during operation are illustrated. The signals at ports 1 and 2 of bridge H2 have a 90° phase difference. According to the bridge's combining characteristics, these signals will be combined at port 4. The signal at port 3 is relatively independent of the signals at ports 1 and 2, and its phase can be adjusted using a broadband phase shifter or delay unit D1. Assuming its phase is 0°, the signal will be distributed to ports 1 and 2, also with a 90° and 0° phase difference. After the signal is reversed and output to ports 1 and 2, it will be reflected by the output matching circuits of broadband power amplifiers A2 and A3, re-entering ports 1 and 2 of bridge H2. At this point, the signal will be combined at port 4 and will have the same value as the output signals of broadband power amplifiers A2 and A3. Therefore, the input signals at ports 1, 2, and 3 of bridge H2 are all combined and output at port 4, and the output signals of broadband power amplifiers A2 and A3 are directly combined at port 4 of H2 without affecting the input signal at port 3.

[0064] The function of the broadband phase shifter or delayer D1 in adjusting phase superposition is as follows: Figure 4 As shown. When there is no broadband phase shifter or delay unit D1 for adjustment, the circuit has a certain phase difference due to its own phase difference or manufacturing errors, resulting in poor synthesis effect. In extreme cases, the phases may even cancel each other out. When the amplitudes of the two signals are equal, the change in synthesis efficiency due to the phase difference is shown in the following formula:

[0065]

[0066] The synthesis efficiency is highest when the phase difference Δφ is 0°; when the phases are opposite and the difference is 180°, the synthesis efficiency is 0.

[0067] As described above, the continuous wave microwave signal and pulse signal output from the continuous wave microwave signal source S1 and the pulse signal source S3 are amplified by broadband power amplifiers A1, A2, and A3, and then superimposed at port 4 of bridge H2. The efficiency of the superposition can be maximized by adjusting the phase shift or delay value of the broadband phase shifter or delay unit D1.

[0068] In practical applications, such as micro-discharge testing, the broadband power amplifier channels A2 and A3 can be configured as pulse channels and use vacuum amplifiers. Typically, a single device can achieve a power output of thousands of kilowatts, which can greatly reduce costs. The broadband power amplifier channel A1 is a continuous wave power, which is usually one-tenth of the pulse power. Solid-state devices can be used, which have a smaller size, making the whole system superior in terms of performance, cost, and size.

[0069] It is worth noting that, from Figure 3 As can be seen, the signals at port 3 of bridge H2 are isolated from those at ports 1 and 2. Therefore, it is possible to superimpose signals of any type, such as continuous wave, pulse, amplitude modulation and phase modulation signals. For superimposing signals of different frequencies, the main requirement is that their operating frequencies are within the operating range of the bridge and amplifier.

[0070] As can be seen from the above, the power amplifier architecture implemented in this invention is used for seamless mixing of broadband high-power microwave signals. The mixing ratio, frequency, and signal pattern are unrestricted, which can greatly reduce the cost of micro-discharge testing systems. Specifically:

[0071] 1. The power amplifier architecture uses broadband components, which can output kilowatt-level power at the frequency multiplier layer.

[0072] 2. The internal amplification channel of the power amplifier architecture uses both high-peak pulse devices and high-average continuous wave devices to reduce costs.

[0073] 3. The isolation function of the internal bridge of the power amplifier architecture makes the two synthesized signals independent and do not interfere with each other, enabling it to support the synthesis of arbitrary style signals of different frequencies.

[0074] 4. The power amplifier architecture uses a phase shifter or delayer to adjust the synthesized phase, which can compensate for circuit differences and achieve the highest synthesis efficiency.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A power amplifier architecture for broadband microwave signal mixing, characterized in that, It includes a continuous wave microwave signal source S1, a synchronization signal source S2, a pulse signal source S3, a broadband phase shifter or delayer D1, a broadband power amplifier A1, a broadband power amplifier A2, a broadband power amplifier A3, a bridge H1, a bridge H2, an isolation resistor R1, a directional coupler C1, a directional coupler C2, a directional coupler C3, and a directional coupler C4; The signal output port 1 of the continuous wave microwave signal source S1 is connected to port 3 of the bridge H2 via the direct-through terminal of the broadband phase shifter or delayer D1, broadband power amplifier A1, and directional coupler C1 in sequence; the synchronization controlled port 2 of the continuous wave microwave signal source S1 is connected to the signal output port 1 of the synchronization signal source S2; the signal output port 3 of the pulse signal source S3 is connected to the control ports 3 of the broadband power amplifiers A2 and A3 respectively; the signal output port 1 of the pulse signal source S3 is connected to port 1 of the bridge H1; the synchronization controlled port 2 of the pulse signal source S3 is connected to the signal output port 2 of the synchronization signal source S2. Port 2 of bridge H1 is grounded via isolation resistor R1; port 3 of bridge H1 is connected to port 1 of bridge H2 via the through port of broadband power amplifier A2 and directional coupler C2; port 4 of bridge H1 is connected to port 2 of bridge H2 via the through port of broadband power amplifier A3 and directional coupler C3; port 4 of bridge H2 is connected to the output port Pout of the power amplifier architecture via the through port of directional coupler C4. When the power amplifier architecture is used for micro-discharge testing, the broadband power amplifier A1 is a solid-state device; the broadband power amplifiers A2 and A3 are vacuum amplifiers.

2. The power amplifier architecture for broadband microwave signal mixing according to claim 1, characterized in that, The bridges H1 and H2 are 90° bridges.

3. The power amplifier architecture for broadband microwave signal mixing according to claim 1, characterized in that, The structures of broadband power amplifiers A1, A2, and A3 all include: Power transistor Q1; The input matching circuit is connected to the gate of the power transistor Q1; Output matching circuit connected to the drain of power transistor Q1; The source of power transistor Q1 in broadband power amplifier A1 is grounded; the source of power transistor Q1 in broadband power amplifiers A2 and A3 is connected to the signal output port 3 of pulse signal source S3.

4. The power amplifier architecture for broadband microwave signal mixing according to claim 1, characterized in that, The directional couplers C1, C2, C3 and C4 have power monitoring ports for power monitoring.

5. A method for operating a power amplifier architecture for broadband microwave signal mixing, characterized in that, Includes the following steps: S100, the synchronization signal source S2 outputs a synchronization signal to the continuous wave microwave signal source S1 and the pulse signal source S3, and performs time synchronization control on the signals output by the continuous wave microwave signal source S1 and the pulse signal source S3, so that the signal output port 1 of the continuous wave microwave signal source S1 outputs a continuous wave microwave signal. The signal output ports 1 and 3 of the pulse signal source S3 output pulse signals that correspond to the time and phase of the continuous wave microwave signal; S200, the continuous wave microwave signal is phase-shifted or delayed by a broadband phase shifter or delayer D1; S300, the phase-shifted or delayed continuous wave microwave signal enters the broadband power amplifier A1, and the broadband power amplifier A1 outputs the amplified continuous wave microwave signal. S400, the amplified continuous wave microwave signal reaches port 3 of bridge H2 through the through end of directional coupler C1; S500, the pulse signal output port 1 of the pulse signal source S3 outputs a pulse signal into port 1 of the bridge H1, which is divided into two signals with a 90° phase difference, and output from port 3 and port 4 respectively; S600, a pulse signal with a 90° phase shift is output from port 3 of bridge H1, which is amplified by broadband power amplifier A2. The amplified pulse signal then enters port 1 of bridge H2 through the through-hole of directional coupler C2. A pulse signal without phase shift is output from port 4 of bridge H1, which is amplified by broadband power amplifier A3. The amplified pulse signal then enters port 2 of bridge H2 through the through-hole of directional coupler C3. S700, the bridge H2 inputs a pulse signal with a 90° phase shift from the output of the broadband power amplifier A2 at port 1, a pulse signal without phase shift from the output of the broadband power amplifier A3 at port 2, and a continuous wave microwave signal from the output of the broadband power amplifier A1 at port 3. After being synthesized at port 4, the signal is output to the output port Pout of the power amplifier architecture via the through end of the directional coupler C4.

6. The method of operating the power amplifier architecture for broadband microwave signal mixing according to claim 5, characterized in that, During operation, the synthesis efficiency of bridge H2 is maximized by adjusting the phase shift or delay value of the broadband phase shifter or delayer D1.

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