CN115792818A - Radar transmitter system - Google Patents

Abstract

The invention provides a radar transmitter system, which comprises an input single-pole double-throw switch, a klystron transmitter system, a solid-state transmitter system and an output single-pole double-throw switch, wherein the input single-pole double-throw switch is connected with the klystron transmitter system; the klystron transmitter system and the solid-state transmitter system are connected in parallel, the input ends of the klystron transmitter system and the solid-state transmitter system are connected with the input single-pole double-throw switch, and the output ends of the klystron transmitter system and the solid-state transmitter system are connected with the output single-pole double-throw switch; wherein, the microwave power signal input into the input single-pole double-throw switch is amplified by the klystron transmitter system or the solid-state transmitter system and then output by the output single-pole double-throw switch. In the invention, when any one transmitter system fails, the other transmitter system can amplify the microwave power signal, so that the radar transmitter system can still be used, and the problem of single-point failure is avoided.

Description

Radar transmitter system

Technical Field

The invention relates to the technical field of radar transmitters, in particular to a radar transmitter system.

Background

The traditional radar transmitter usually uses a single beam klystron as a core microwave amplifier, and in order to support the normal work of the klystron of the core microwave amplifier, a large amount of auxiliary equipment such as a high-voltage power supply, modulation switch equipment, a high-voltage transformer, cooling equipment and the like need to be configured, and the equipment usually works in the environment of high voltage and large current, and has the following problems:

the klystron auxiliary equipment has high failure rate, and a transmitter is easy to be unavailable; the klystron serving as the core of the transmitter is high in price, the service life of the klystron is usually only 1000 to 2000 hours, the probability of various faults occurring at the end of the service life is high, the problem of single-point failure is easily caused, and the overall reliability of the transmitter is reduced.

Disclosure of Invention

The invention mainly aims to provide a radar transmitter system, aiming at overcoming the defect that the single point is easy to lose efficacy when a klystron transmitter is used alone at present.

The invention provides a radar transmitter system, which comprises an input single-pole double-throw switch, a klystron transmitter system, a solid-state transmitter system and an output single-pole double-throw switch, wherein the input single-pole double-throw switch is connected with the klystron transmitter system;

the klystron transmitter system and the solid-state transmitter system are connected in parallel, the input ends of the klystron transmitter system and the solid-state transmitter system are connected with the input single-pole double-throw switch, and the output ends of the klystron transmitter system and the solid-state transmitter system are connected with the output single-pole double-throw switch;

wherein, the microwave power signal input into the input single-pole double-throw switch is amplified by the klystron transmitter system or the solid-state transmitter system and then output by the output single-pole double-throw switch.

Further, the klystron transmitter system includes a solid state amplifier and a klystron amplifier; the solid-state amplifier is used for amplifying the microwave power signal and then outputting the microwave power signal to the klystron amplifier for power amplification.

Further, the solid-state amplifier comprises a first isolator, a field effect transistor amplifier, a coupling detector, a coaxial switch, a PIN electrically-tuned attenuator and a second isolator which are sequentially connected;

the microwave power signal is input into the field effect transistor amplifier from the first isolator, amplified and input into the coupling detector; the coupling detector is used for monitoring the amplified microwave power signal and outputting the microwave power signal to the coaxial switch; the coaxial switch is used for switching the amplified microwave power signal to different channels of the PIN electrically-tuned attenuator to perform attenuation control of different gears; the PIN electrically-tuned attenuator inputs microwave power signals subjected to attenuation control to the klystron amplifier through the second isolator;

the first isolator is also used for isolating the field effect transistor from a device for transmitting the microwave power signal;

the second isolator is also used for isolating the adaptation signal between the field effect transistor and the klystron amplifier.

Further, the klystron amplifier comprises a klystron, a first coupler and a third isolator;

the microwave power signal amplified by the solid-state amplifier is input to the klystron for secondary amplification and then input to the first coupler for detection; and the microwave power signal after the secondary amplification is output to the output single-pole double-throw switch by the third isolator.

Further, the solid-state transmitter system comprises an excitation-stage amplifier, N final-stage power modules, an N-path power divider, N/2-path power combiners, an N/2-path power combiner and a high-power directional coupler;

the excitation level amplifier receives the microwave power signal for preliminary amplification, and the microwave power signal is divided into N paths of signals by the N paths of power dividers; each path of signal is input to one final power module for amplification;

signals amplified by every two final power modules are input to one 2-path power combiner for combination; and the signals output by the N/2 paths of work summation devices are input into the N/2 paths of work summation devices together for power synthesis, and the synthesized signals are output to the output single-pole double-throw switch through the high-power directional coupler.

The invention also provides a radar transmitter system, which comprises a first power divider, a klystron transmitter system, a solid-state transmitter system and a first power combiner;

the klystron transmitter system and the solid-state transmitter system are connected in parallel, the input ends of the klystron transmitter system and the solid-state transmitter system are connected with the first power divider, and the output ends of the klystron transmitter system and the solid-state transmitter system are connected with the first power divider;

the first power divider divides an input microwave power signal into two paths, and the two paths of microwave power signals are respectively input to the klystron transmitter system and the solid-state transmitter system for amplification;

and the first power summing device is used for carrying out power synthesis on amplified signals output by the klystron transmitter system and the solid-state transmitter system and then outputting the amplified signals.

Further, the klystron transmitter system includes a solid state amplifier and a klystron amplifier; the solid-state amplifier is used for amplifying the microwave power signal and then outputting the microwave power signal to the klystron amplifier for power amplification.

Further, the solid-state transmitter system comprises an excitation-stage amplifier, N final-stage power modules, an N-path power divider, N/2-path power combiners, an N/2-path power combiner and a high-power directional coupler;

the excitation level amplifier receives the signal distributed by the first power divider for preliminary amplification, and the signal is divided into N paths of signals by the N paths of power dividers; each path of signal is input to one final power module for amplification;

signals amplified by every two final power modules are input to one 2-path power combiner for combination; and the signals output by the N/2 paths of power summing devices are input to the N/2 paths of power combiners together for power combination, and the combined signals are output to the first power summing device through the high-power directional coupler.

Further, the radar transmitter system further comprises a second coupler and a fourth isolator; the signal output by the first work summation device output end is input to the fourth isolator by the second coupler; and the fourth isolator outputs the signal to the antenna feed system.

Further, the klystron amplifier comprises a klystron, a first coupler and a third isolator;

the microwave power signal amplified by the solid-state amplifier is input to the klystron for secondary amplification, and then is input to the first coupler for detection; and the microwave power signal after the secondary amplification is output to the first power summing device by the third isolator.

The invention provides a radar transmitter system, which comprises an input single-pole double-throw switch, a klystron transmitter system, a solid state transmitter system and an output single-pole double-throw switch, wherein the input single-pole double-throw switch is connected with the klystron transmitter system; the klystron transmitter system and the solid-state transmitter system are connected in parallel, the input ends of the klystron transmitter system and the solid-state transmitter system are connected with the input single-pole double-throw switch, and the output ends of the klystron transmitter system and the solid-state transmitter system are connected with the output single-pole double-throw switch; wherein, the microwave power signal input into the input single-pole double-throw switch is amplified by the klystron transmitter system or the solid-state transmitter system and then output by the output single-pole double-throw switch. In the invention, the klystron transmitter system and the solid state transmitter system are connected in parallel and can be used for amplifying input microwave power signals, and when any one transmitter system fails, the other transmitter system can be used for amplifying the microwave power signals, so that the radar transmitter system can still be used, and the problem of single-point failure is avoided.

Drawings

FIG. 1 is a block diagram of a radar transmitter system in accordance with an embodiment of the present invention;

FIG. 2 is a block diagram of a klystron transmitter system in one embodiment of the invention;

FIG. 3 is a block diagram of a klystron amplifier in one embodiment of the invention;

fig. 4 is a block diagram of a solid state transmitter system in an embodiment of the invention;

FIG. 5 is a block diagram of a radar transmitter system according to another embodiment of the present invention;

the implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As used herein, the singular forms "a", "an", "the" and "the" include plural referents unless the content clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, units, modules, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Referring to fig. 1, a radar transmitter system according to an embodiment of the present invention includes an input single-pole double-throw switch, a klystron transmitter system, a solid-state transmitter system, and an output single-pole double-throw switch;

the klystron transmitter system and the solid-state transmitter system are connected in parallel, the input ends of the klystron transmitter system and the solid-state transmitter system are connected with the input single-pole double-throw switch, and the output ends of the klystron transmitter system and the solid-state transmitter system are connected with the output single-pole double-throw switch;

the microwave power signal input into the input single-pole double-throw switch is amplified by the klystron transmitter system or the solid-state transmitter system and then output by the output single-pole double-throw switch.

In this embodiment, the input spdt switch may be connected to a frequency synthesizer, the frequency synthesizer transmits the microwave power signal (frequency synthesizer signal) to the input spdt switch, and the input spdt switch selectively communicates with the klystron transmitter system or the solid state transmitter system to amplify the microwave power signal; meanwhile, the output single-pole double-throw switch is also selectively communicated with the klystron transmitter system or the solid-state transmitter system for outputting the amplified microwave power signal.

In this embodiment, the klystron transmitter system and the solid state transmitter system have only one transmitter system operating output power at a time. It can be understood that, when the input single-pole double-throw switch is controlled by the main control computer software to be switched to the solid-state transmitter system, the microwave power signal is input into the solid-state transmitter system through the input single-pole double-throw switch, and the klystron transmitter system has no excitation signal (or microwave power signal) input; meanwhile, the output single-pole double-throw switch is switched to the solid-state transmitter system, and the solid-state transmitter system outputs a microwave power signal and feeds the microwave power signal into the antenna feed system. When the input single-pole double-throw switch is controlled by the main control computer software to switch the klystron transmitter system, the microwave power signal is input into the klystron transmitter system through the input single-pole double-throw switch, at the moment, no excitation signal (or microwave power signal) is input into the solid state transmitter system, the output single-pole double-throw switch is switched to the klystron transmitter system, and the klystron transmitter system outputs the amplified microwave power signal to the antenna feed system. In this embodiment, it is generally preferred that the output power of the klystron transmitter system is selected, and the master computer software can automatically switch the output to the solid state transmitter system when the control and protection system detects that the klystron transmitter system is out of order.

Since the klystron transmitter system uses a klystron amplifier, the klystron amplifier is easy to break down, so that the solid state transmitter system is connected in parallel to avoid the condition that the radar transmitter system is unavailable due to the fact that the klystron amplifier breaks down. With the development of power electronics technology becoming mature, the cost of solid-state power electronics is gradually reduced and the performance is gradually improved, and solid-state transmitter systems based on solid-state amplifiers are gradually beginning to be applied in engineering. The solid-state transmitter system is simple in structure, the amplification channel is in modular design, the amplification modules are connected in parallel to form the structure, the single device does not affect the overall function of the transmitter system due to faults, the high-reliability advantage is achieved, fault location is facilitated due to modular design, fault isolation and location are facilitated, and operation flexibility is high. The amplifier used by the solid-state transmitter system has high working efficiency, does not need to use high-voltage and high-current equipment, has heat productivity obviously lower than that of a klystron transmitter, and is safe and environment-friendly. The solid-state amplifier used by the solid-state transmitter system has long service life and good consistency, and the waveform parameters and the frequency spectrum parameters of the transmitter are superior to those of a klystron transmitter.

Referring to fig. 2, in one embodiment, the klystron transmitter system includes a solid state amplifier and a klystron amplifier; the solid-state amplifier is used for amplifying the microwave power signal and then outputting the microwave power signal to the klystron amplifier for power amplification.

In this embodiment, the klystron transmitter system adopts a full-coherent two-stage amplification chain scheme, wherein the front stage is the solid-state amplifier composed of microwave gaas fets, and the final stage is the klystron amplifier, which is a single-injection klystron amplifier.

Specifically, the solid-state amplifier comprises a first isolator, a field effect transistor amplifier, a coupling detector, a coaxial switch, a PIN electrically-tuned attenuator and a second isolator which are sequentially connected;

the microwave power signal is input into the field effect transistor amplifier from the first isolator, amplified and input into the coupling detector; the coupling detector is used for monitoring the amplified microwave power signal and outputting the microwave power signal to the coaxial switch; the coaxial switch is used for switching the amplified microwave power signal to different channels of the PIN electrically-tuned attenuator to perform attenuation control of different gears; the PIN electrically-tuned attenuator inputs microwave power signals subjected to attenuation control to the klystron amplifier through the second isolator;

the first isolator is also used for isolating the field effect transistor from a device for transmitting the microwave power signal to avoid the frequency synthesizer from being damaged or damaged by a klystron transmitter system.

The second isolator is also used for isolating the adaptation signal between the field effect transistor and the klystron amplifier so as to prevent the klystron amplifier of the last stage from damaging or damaging the solid-state amplifier of the previous stage.

Specifically, the coupling detector is used for monitoring a microwave power signal output to a klystron transmitter system from a frequency synthesizer and an output signal of a solid-state amplifier, and providing an envelope monitoring signal of a pulse waveform for a monitoring instrument; the coaxial switch is used for switching microwave power signals output by the frequency synthesizer to different channels of the PIN electrically-tuned attenuator to realize attenuation control of different gears; one of the functions of the PIN electrically-tuned attenuator is that the input power can be adjusted according to the saturation degree of the output power of the solid-state amplifier and the requirement of the output power of the final stage, so that the optimal excitation power required by the full frequency band of the final-stage klystron amplifier is obtained; the second function is to make the solid-state amplifier have no output power under the control of the signal of the protection circuit by making the solid-state amplifier at the maximum attenuation, thereby achieving the function of protecting the final-stage klystron amplifier, namely cutting off the frequency synthesis signal when the klystron transmitter system has a fault.

In another embodiment, the solid-state amplifier further integrates facilities such as a dc regulated power supply, a modulator, a control and protection circuit, and a secondary power supply.

Referring to fig. 3, in one embodiment, the klystron amplifier includes a klystron, a first coupler, and a third isolator;

the microwave power signal amplified by the solid-state amplifier is input to the klystron for secondary amplification and then input to the first coupler for detection; and the microwave power signal after the secondary amplification is output to the output single-pole double-throw switch by the third isolator.

In this embodiment, the first coupler is used to provide an output power monitoring channel for monitoring and measuring parameters such as power and waveform; the third isolator is used for isolating standing waves of the front stage and the rear stage of the klystron and avoiding mutual interference and damage. The supporting equipment required by the klystron operation includes, but is not limited to, a direct current high voltage power supply, a modulator, a coil power supply, a titanium pump power supply, a magnetic biasing power supply, a filament power supply, a liquid cooling system, an air cooling system, etc., and is not described herein again.

In other embodiments, the klystron transmitter system further comprises a sealed window through which air pressure is isolated from the outside.

Referring to fig. 4, in the above embodiment, the solid state transmitter system includes a driver stage amplifier, N final stage power blocks, an N-way power splitter, N/2-way power combiners, an N/2-way power combiner, and a high power directional coupler;

the excitation level amplifier receives the microwave power signal for preliminary amplification, and the microwave power signal is divided into N paths of signals by the N paths of power dividers; each path of signal is input to one final power module for amplification;

signals amplified by every two final power modules are input to one 2-path power combiner for combination; and the signals output by the N/2 paths of work summation devices are input into the N/2 paths of work summation devices together for power synthesis, and the synthesized signals are output to the output single-pole double-throw switch through the high-power directional coupler.

In one embodiment, the radar transmitter system further comprises a control and protection component, a power supply component, a fan component and the like.

The power supply assembly provides power supply voltage for a control protection assembly, a solid-state amplifier, a klystron amplifier and a fan assembly in the radar transmitter system. The control and protection component controls the power-on and power-off of the radar transmitter system; providing synchronous pulse signals for the solid-state amplifier and the klystron amplifier; and the signal processing unit is communicated with a solid-state amplifier at the front stage and a klystron amplifier at the final stage, collects the fault and state signals of the klystron amplifier, processes the fault and state signals and then sends the processed signals to a main control computer.

To sum up, the radar transmitter system provided in an embodiment of the present invention includes an input single-pole double-throw switch, a klystron transmitter system, a solid-state transmitter system, and an output single-pole double-throw switch; the klystron transmitter system and the solid-state transmitter system are connected in parallel, the input ends of the klystron transmitter system and the solid-state transmitter system are connected with the input single-pole double-throw switch, and the output ends of the klystron transmitter system and the solid-state transmitter system are connected with the output single-pole double-throw switch; wherein, the microwave power signal input into the input single-pole double-throw switch is amplified by the klystron transmitter system or the solid-state transmitter system and then output by the output single-pole double-throw switch. In the invention, the solid-state transmitter system is merged into the klystron transmitter system in a microwave switch switching mode to realize a one-key switching backup mode, and when the klystron transmitter system has a single-point failure fault, the solid-state transmitter system provides a required pulse power microwave signal for the radar system. When any one transmitter system fails, the other transmitter system can be used for amplifying microwave power signals, so that the radar transmitter system can still be used, and the problem of single-point failure is avoided.

Referring to fig. 5, in another embodiment of the present invention, a radar transmitter system is further provided, including a first power divider, a klystron transmitter system, a solid state transmitter system, and a first power combiner;

the klystron transmitter system and the solid-state transmitter system are connected in parallel, the input ends of the klystron transmitter system and the solid-state transmitter system are connected with the first power divider, and the output ends of the klystron transmitter system and the solid-state transmitter system are connected with the first power divider;

the first power divider divides an input microwave power signal into two paths, and the two paths of microwave power signals are respectively input to the klystron transmitter system and the solid-state transmitter system for amplification;

and the first power summing device is used for carrying out power synthesis on the amplified signals output by the klystron transmitter system and the solid-state transmitter system and then outputting the amplified signals.

In this embodiment, the difference from the radar transmitter system in the previous embodiment is that the input single-pole double-throw switch and the output single-pole double-throw switch are not used in this embodiment, but instead the first power divider and the power combiner are used.

In this embodiment, the klystron transmitter system and the solid-state transmitter system operate simultaneously, and due to the function of the first power divider, the microwave power signal input to the klystron transmitter system and the solid-state transmitter system is half of the output of the frequency synthesizer; meanwhile, the output power of the klystron transmitter system and the output power of the solid-state transmitter system are usually half of the output required power, and the output power of the klystron transmitter system and the output power of the solid-state transmitter system are synthesized through the first power combiner to obtain full-power output which is fed into the antenna feed system. When one of the klystron transmitter system and the solid-state transmitter system has a fault, the other transmitter system outputs power, so that the whole process of power output is not interrupted, and when the power abnormality is monitored by the control and protection circuit if necessary, the output power of the normal transmitter system can be automatically increased to compensate the power lost by the fault transmitter system.

In one embodiment, the klystron transmitter system comprises a solid state amplifier and a klystron amplifier; the solid-state amplifier is used for amplifying the microwave power signal and then outputting the microwave power signal to the klystron amplifier for power amplification.

In one embodiment, the solid state transmitter system comprises a driver stage amplifier, N final stage power modules, an N-way power divider, N/2-way power combiners, an N/2-way power combiner, and a high power directional coupler;

the excitation level amplifier receives the signal distributed by the first power divider for preliminary amplification, and the signal is divided into N paths of signals by the N paths of power dividers; each path of signal is input to one final power module for amplification;

signals amplified by every two final power modules are input to one 2-path power combiner for combination; and the signals output by the N/2 paths of power summing devices are input to the N/2 paths of power combiners together for power combination, and the combined signals are output to the first power summing device through the high-power directional coupler.

In an embodiment, the radar transmitter system further includes a second coupler and a fourth isolator; the signal output by the first work summation device output end is input to the fourth isolator by the second coupler; and the fourth isolator outputs the signal to the antenna feed system. The second coupler is used for monitoring the power output by the first coupler.

In one embodiment, the klystron amplifier comprises a klystron, a first coupler, and a third isolator;

the microwave power signal amplified by the solid-state amplifier is input to the klystron for secondary amplification and then input to the first coupler for detection; and the microwave power signal after the secondary amplification is output to the first power summing device by the third isolator.

In this embodiment, the specific implementation of the solid state transmitter system and the klystron transmitter system is described in the above embodiments, and will not be described herein again.

In summary, the radar transmitter system provided in another embodiment of the present invention includes a first power divider, a klystron transmitter system, a solid state transmitter system, and a first power combiner; the klystron transmitter system and the solid-state transmitter system are connected in parallel, the input ends of the klystron transmitter system and the solid-state transmitter system are connected with the first power divider, and the output ends of the klystron transmitter system and the solid-state transmitter system are connected with the first power divider; the first power divider divides an input microwave power signal into two paths, and the two paths of microwave power signals are respectively input to the klystron transmitter system and the solid-state transmitter system for amplification; and the first power summing device is used for carrying out power synthesis on amplified signals output by the klystron transmitter system and the solid-state transmitter system and then outputting the amplified signals. In the invention, the klystron transmitter system and the solid state transmitter system are connected in parallel and can be used for amplifying input microwave power signals, and when any one transmitter system fails, the other transmitter system can be used for amplifying the microwave power signals, so that the radar transmitter system can still be used, and the problem of single-point failure is avoided.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A radar transmitter system is characterized by comprising an input single-pole double-throw switch, a klystron transmitter system, a solid-state transmitter system and an output single-pole double-throw switch;

the klystron transmitter system and the solid-state transmitter system are connected in parallel, the input ends of the klystron transmitter system and the solid-state transmitter system are connected with the input single-pole double-throw switch, and the output ends of the klystron transmitter system and the solid-state transmitter system are connected with the output single-pole double-throw switch;

wherein, the microwave power signal input into the input single-pole double-throw switch is amplified by the klystron transmitter system or the solid-state transmitter system and then output by the output single-pole double-throw switch.

2. The radar transmitter system of claim 1, wherein the klystron transmitter system comprises a solid state amplifier and a klystron amplifier; the solid-state amplifier is used for amplifying the microwave power signal and then outputting the microwave power signal to the klystron amplifier for power amplification.

3. The radar transmitter system of claim 2, wherein the solid state amplifier comprises a first isolator, a field effect transistor amplifier, a coupling detector, a coaxial switch, a PIN electrically tunable attenuator, and a second isolator connected in sequence;

the microwave power signal is input into the field effect transistor amplifier from the first isolator, amplified and input into the coupling detector; the coupling detector is used for monitoring the amplified microwave power signal and outputting the microwave power signal to the coaxial switch; the coaxial switch is used for switching the amplified microwave power signal to different channels of the PIN electrically-tuned attenuator to perform attenuation control of different gears; the PIN electrically-tuned attenuator inputs microwave power signals subjected to attenuation control to the klystron amplifier through the second isolator;

the first isolator is also used for isolating the field effect transistor from a device for transmitting the microwave power signal;

the second isolator is also used for isolating the adaptation signal between the field effect transistor and the klystron amplifier.

4. The radar transmitter system of claim 2, wherein the klystron amplifier includes a klystron, a first coupler, and a third isolator;

the microwave power signal amplified by the solid-state amplifier is input to the klystron for secondary amplification, and then is input to the first coupler for detection; and the microwave power signal after the secondary amplification is output to the output single-pole double-throw switch by the third isolator.

5. The radar transmitter system of claim 1, wherein the solid state transmitter system includes a driver stage amplifier, N final power blocks, an N-way power splitter, N/2-way power combiners, an N/2-way power combiner, and a high power directional coupler;

the excitation level amplifier receives the microwave power signal for preliminary amplification, and the microwave power signal is divided into N paths of signals by the N paths of power dividers; each path of signal is input to one final power module for amplification;

signals amplified by every two final power modules are input to one 2-path power combiner for combination; and the signals output by the N/2 paths of work summation devices are input into the N/2 paths of work summation devices together for power synthesis, and the synthesized signals are output to the output single-pole double-throw switch through the high-power directional coupler.

6. A radar transmitter system is characterized by comprising a first power divider, a klystron transmitter system, a solid-state transmitter system and a first power combiner;

the klystron transmitter system and the solid-state transmitter system are connected in parallel, the input ends of the klystron transmitter system and the solid-state transmitter system are connected with the first power divider, and the output ends of the klystron transmitter system and the solid-state transmitter system are connected with the first power divider;

the first power divider divides an input microwave power signal into two paths, and the two paths of microwave power signals are respectively input to the klystron transmitter system and the solid-state transmitter system for amplification;

and the first power summing device is used for carrying out power synthesis on the amplified signals output by the klystron transmitter system and the solid-state transmitter system and then outputting the amplified signals.

7. The radar transmitter system of claim 6, wherein the klystron transmitter system comprises a solid state amplifier and a klystron amplifier; the solid-state amplifier is used for amplifying the microwave power signal and then outputting the microwave power signal to the klystron amplifier for power amplification.

8. The radar transmitter system of claim 6, wherein the solid state transmitter system includes a driver stage amplifier, N final power blocks, an N-way power splitter, N/2-way power combiners, an N/2-way power combiner, and a high power directional coupler;

the excitation level amplifier receives the signal distributed by the first power divider for preliminary amplification, and the signal is divided into N paths of signals by the N paths of power dividers; each path of signal is input to one final power module for amplification;

signals amplified by every two final power modules are input into one 2-path power combiner to be combined; and the signals output by the N/2 paths of power summing devices are input to the N/2 paths of power combiners together for power combination, and the combined signals are output to the first power summing device through the high-power directional coupler.

9. The radar transmitter system of claim 6, further comprising a second coupler and a fourth isolator; the signal output by the first work summation device output end is input to the fourth isolator by the second coupler; and the fourth isolator outputs the signal to the antenna feed system.

10. The radar transmitter system of claim 7, wherein the klystron amplifier includes a klystron, a first coupler, and a third isolator;

the microwave power signal amplified by the solid-state amplifier is input to the klystron for secondary amplification and then input to the first coupler for detection; and the microwave power signal after the secondary amplification is output to the first power summing device by the third isolator.

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