CN114421978A - Ultra-wideband high-power high-efficiency multiband transmission subsystem - Google Patents

Ultra-wideband high-power high-efficiency multiband transmission subsystem Download PDF

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CN114421978A
CN114421978A CN202111435562.5A CN202111435562A CN114421978A CN 114421978 A CN114421978 A CN 114421978A CN 202111435562 A CN202111435562 A CN 202111435562A CN 114421978 A CN114421978 A CN 114421978A
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power
stage
final
module
power amplifier
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林宇
王一鹏
祝萍
陈政言
王贺
丁玲
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Nanjing Julei Equipment Technology Co ltd
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Nanjing Julei Equipment Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/03—Constructional details, e.g. casings, housings
    • H04B1/036—Cooling arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microwave Amplifiers (AREA)

Abstract

The invention discloses a broadband high-power high-efficiency multiband emission subsystem, which comprises: the signal source outputs a radio frequency signal to the preceding stage pushing unit, the preceding stage pushing amplifying unit performs first stage amplification on the radio frequency signal from the signal source and outputs the radio frequency signal to the final stage power amplifying unit to serve as a driving signal of the final stage power amplifying unit, and the power supply unit is used for supplying power to the preceding stage pushing amplifying unit and the final stage power amplifying unit; the final-stage power amplifier unit comprises a power divider module, a combiner module and a power divider module 2NLast-stage power amplifier moduleThe splitter module is connected with the front stage push amplifying unit and is used for equally dividing the radio frequency signal amplified by the first stage of the front stage push amplifying unit into 2 partsNThe path power signals are respectively output to the final-stage power amplification module, and the combiner module is used for combining and outputting the power signals. The invention has the advantages of high power synthesis efficiency, high system stability, integration miniaturization and the like.

Description

Ultra-wideband high-power high-efficiency multiband transmission subsystem
Technical Field
The invention relates to the technical field of microwave sources, in particular to an ultra-wide band high-power high-efficiency multiband emission subsystem.
Background
In recent years, the application of high power microwaves is diverse: the system comprises a satellite and space platform energy supply device, a deep space probe measurement and control communication device, an orbital vehicle altitude change propulsion system and the like, and the application of the system requires great power support. With the continuous development of semiconductor materials and processes, the output power of microwave devices is larger and larger, although the operating frequency and the achievable power of high-power devices are higher and higher, the output power of a single power amplifier is still limited due to the physical characteristics and the process level of the devices, and the output power of a single power amplifier tube is only hundreds of watts in the current domestic technology, so that the power synthesis method is required to realize the high-power output of ten-kilowatt level. However, at such a large synthesis scale, it is difficult to maintain high synthesis efficiency, and problems such as consistency of each path, isolation of each branch, and stability of a synthesis network in multiplex synthesis are urgently solved.
Disclosure of Invention
The invention aims to provide an ultra-wideband high-power high-efficiency multiband transmitting subsystem which has the advantages of high consistency of all branches during synthesis, good isolation among all branches, improved power synthesis efficiency and high system stability.
The technical purpose of the invention is realized by the following technical scheme:
an ultra-wideband high-power high-efficiency multiband transmission subsystem comprising: the signal source outputs a radio frequency signal to the preceding stage pushing amplification unit, the preceding stage pushing amplification unit outputs the radio frequency signal from the signal source to the final stage power amplification unit after carrying out first stage amplification on the radio frequency signal, and the signal source is used for supplying power to the preceding stage pushing amplification unit and the final stage power amplification unit;
the final-stage power amplification unit comprises a power divider module, a combiner module and a power divider module 2NThe power divider module is connected with the preceding stage push amplifying unit and is used for equally dividing the radio-frequency signal amplified by the first stage of the preceding stage push amplifying unit into 2NThe power signals are respectively output to 2NA final-stage power amplifier module for performing second-stage amplification on the power signal and outputting the power signal to a combiner module, wherein the combiner module is used for combining 2NSynthesizing the power signals after the second-stage amplification into a microwave source signal and outputting the microwave source signal, wherein N is a positive integer greater than one;
the combiner module comprises a plurality of power combiners, the power combiners adopt a ridge waveguide magic T space combination structure, the ridge waveguide magic T space synthesis structure comprises four coaxial waveguide conversion structures, three waveguide magic Ts and three isolation loads, wherein the three waveguide magic T comprises two first waveguide magic T and one second waveguide magic T, the input end of the coaxial waveguide conversion structure is connected with the final power amplifier module and is used for coaxially converting the power signal amplified by the second stage into a waveguide guided wave system for propagation, two input ends of the first waveguide magic T are respectively connected with output ends of the two coaxial waveguide conversion structures, two input ends of the second waveguide magic T are respectively connected with one output end of the two first waveguide magic T, and output ends of the three waveguide magic T are respectively connected with the three isolation loads.
Further setting: the prime stage promotes the amplifying unit and includes preceding stage attenuator, merit branch ware, low noise that connect gradually, numerical control attenuator, equalizer, attenuator, amplifier, numerical control attenuator, amplifier, isolator, final stage amplifier, final stage isolator and coupler, the output of coupler with final stage power amplifier unit connects, preceding stage attenuator's input with the signal source is connected.
Further setting: the final power amplifier module adopts a GaN power tube, and the GaN power tube is realized by cascade synthesis of 64 power amplifier tubes.
Further setting: the power amplifier comprises a power amplifier tube, a power amplifier monitoring unit and a control unit, wherein the power amplifier monitoring unit is used for acquiring working state information, the working state information comprises the temperature and the output power of the power amplifier tube and the voltage and the current of a grid electrode and a drain electrode of the power amplifier tube, the power amplifier monitoring unit comprises a microprocessor, a temperature sensor, a detector and a voltage and current sensor, the temperature sensor is connected with the microprocessor and used for monitoring the temperature of the power amplifier tube, and the detector is used for carrying out coupling detection on the output power of each power amplifier tube to obtain detection voltage and then transmitting the detection voltage to the microprocessor; and the voltage and current sensor is connected with the microprocessor and is used for detecting the voltage and the current of the drain electrode and the grid electrode of the power amplification tube.
Further setting: the power supply unit is a digital power supply, and the digital power supply is electrically connected with the microprocessor.
Further setting: still include the remote monitoring unit, the remote monitoring unit includes remote host computer, microprocessor includes communication module, microprocessor pass through communication module with remote host computer communication is connected, microprocessor passes through communication module sends operating condition information to remote host computer and receives remote host computer's operating instruction.
Further setting: the power amplifier tube is characterized in that a heat dissipation structure is further arranged at the position of the power amplifier tube and comprises oxygen-free copper, a heat pipe array and a radiator, wherein the oxygen-free copper is arranged under the power amplifier tube, and the heat pipe array is arranged between the radiator and the oxygen-free copper.
Further setting: and gap filling materials are filled between the heat pipe array and the oxygen-free copper.
Further setting: the gap filling material is a phase change material.
Further setting: the output end of the combiner module is also connected with a bi-directional coupler, and the microwave source signal is output after passing through the bi-directional coupler.
In conclusion, the invention has the following beneficial effects:
1. a ridge waveguide structure is integrated on the magic T, power signals output by the 4 paths of final power amplifier modules are converted from coaxiality to a waveguide guided wave system through a coaxial waveguide conversion structure to be transmitted, and then the power signals are combined into power signals through the 3 waveguide magic T in pairs to be output, so that index requirements of wide frequency band, small insertion loss and small flatness are met. Meanwhile, 3 high-power isolation loads are adopted between the paths to provide enough inter-path isolation, so that the phenomenon of power backflow caused by inconsistent power synthesis amplitude is prevented, and the combiner is prevented from being damaged.
2. Because carry out output and exceed 10KW for a long time, set up heat radiation structure, establish efficient heat dissipation channel, can high efficiency distribute away the heat that the work of power amplifier tube during operation produced, guarantee the stability of system. The gas-liquid phase of the medium in the heat pipe is changed, so that the extremely high heat conductivity is achieved, and the efficiency of the radiator is greatly improved.
3. The power amplifier monitoring unit is used for monitoring the power amplifier tube inside the system in real time, collecting the voltage and current, the temperature and the output power of the power amplifier tube, and when each module breaks down, the power amplifier monitoring unit can find out the fault in time to process the fault, so that the running stability of the system is ensured. The microprocessor transmits the working state information to the remote host through the communication module and receives the operation instruction of the remote host, and unattended operation can be realized in remote positions or places with severe environment.
Drawings
FIG. 1 is a block diagram showing the overall structure of the embodiment;
FIG. 2 is a schematic diagram of a power combiner according to an embodiment;
FIG. 3 is a schematic structural diagram of a front stage push amplifying unit in the embodiment;
FIG. 4 is a block diagram of the final power amplifier unit in the embodiment;
fig. 5 is a schematic structural diagram of the heat dissipation structure in the embodiment.
In the figure, 1, a power amplifier tube; 2. oxygen-free copper; 3. a gap-filling material; 4. an array of heat pipes; 5. a heat sink.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
as shown in fig. 1-5, an ultra-wideband high-power high-efficiency multiband transmission subsystem includes: the signal source outputs a radio frequency signal to the preceding stage pushing amplification unit, the preceding stage pushing amplification unit outputs the radio frequency signal from the signal source to the final stage power amplification unit after carrying out first stage amplification on the radio frequency signal, and the signal source is used for supplying power to the preceding stage pushing amplification unit and the final stage power amplification unit;
the final-stage power amplifier unit comprises a power divider module, a combiner module and 2N final-stage power amplifier modules, wherein the power divider module is connected with the preceding stage push amplifying unit and is used for equally dividing the radio-frequency signals amplified by the first stage of the preceding stage push amplifying unit into 2N paths of power signals and respectively outputting the power signals to the 2N final-stage power amplifier modules, the final-stage power amplifier module is used for carrying out second-stage amplification on the power signals and outputting the power signals to the combiner module, the combiner module is used for combining the 2N paths of power signals amplified by the second stage into one path of microwave source signals and outputting the microwave source signals, N is a positive integer greater than one, and in the embodiment, the radio-frequency signals amplified by the first stage of the preceding stage push amplifying unit are equally divided into sixteen paths of power signals and output the sixteen paths of power signals to the sixteen final-stage power amplifier modules.
The combiner module comprises a plurality of power combiners, the power combiners adopt a ridge waveguide magic T space combination structure, the ridge waveguide magic T space synthesis structure comprises four coaxial waveguide conversion structures, three waveguide magic Ts and three isolation loads, wherein the three waveguide magic T comprises two first waveguide magic T and one second waveguide magic T, the input end of the coaxial waveguide conversion structure is connected with the final power amplifier module and is used for coaxially converting the power signal amplified by the second stage into a waveguide guided wave system for propagation, two input ends of the first waveguide magic T are respectively connected with output ends of the two coaxial waveguide conversion structures, two input ends of the second waveguide magic T are respectively connected with one output end of the two first waveguide magic T, and output ends of the three waveguide magic T are respectively connected with the three isolation loads. In this embodiment, five power combiners are provided, wherein the four power combiners respectively input sixteen power signals amplified by the final power amplifier module in the second stage into the four power combiners and then combine the power signals into four power signals, and then combine the power signals into one microwave source signal through another power combiner.
The traditional plane power synthesis circuit is usually composed of Willkinson bridge or Lange coupler, and the like, and the scheme has simple structure and easy realization. However, the planar dielectric loss is large, and the synthesis efficiency is rapidly reduced with the increase of the number of synthesis paths and the lengthening of the paths, so that the planar dielectric loss is not suitable for large-scale high-efficiency synthesis. In addition, the planar circuit has limited power capacity and cannot meet the requirement of high-power output. The traditional cavity combiner cannot solve the technical problems of broadband and high isolation; the power synthesis in the waveguides such as slot waveguide power synthesis and ridge waveguide synthesis can improve the synthesis efficiency, but the structure has the disadvantages of complex structure, large appearance, high processing technology requirement and high cost. In this embodiment, the combiner module adopts a ridge waveguide magic T spatial synthesis structural form, and adopts a spatial synthesis technology, so as to meet the index requirements of a wide frequency band, small insertion loss, small flatness, high isolation and the like. And the four power synthesizers synthesize sixteen power signals into four paths, input the four paths into another power synthesizer to synthesize the four power synthesizers into a microwave source signal and output the microwave source signal so that the power can reach 10KW at the lowest and 15KW at the highest. The output end of the combiner module is also connected with a bi-directional coupler, and the microwave source signal is output after passing through the bi-directional coupler, so that the forward and reverse power detection function is realized. Whether the amplitude and phase in each combining branch are consistent or not directly affects the combining efficiency, namely the final output power. Due to the short high frequency wavelength and the long electrical length, small deviations can result in severe amplitude-phase inconsistencies. Through strict control on the following links, consistency control of each path in the whole power division/synthesis network is guaranteed, and synthesis efficiency is improved.
In design, symmetrical design circuits and structures are adopted in the same-stage synthesis circuit, and the consistency of the circuit line width and the line length of each synthesis branch is ensured; when incoming material is inspected, the power amplifier devices are strictly subjected to phase and amplitude screening, each set of power amplifier uses the devices of the same batch, the phase difference of the power amplifier tubes 1 of each batch is controlled within +/-6 degrees, and the amplitude difference is controlled within +/-0.3 dB. During assembly, the key circuit part uses the alignment mark, and the assembly precision is strictly controlled; a gold-plated copper plate with the thickness of 0.5mm is used as a circuit transmission line, so that the electrical conductivity and the heat dissipation performance are improved. In addition, phase adjusting screws are arranged on each synthesis branch to increase a phase adjusting means during power amplifier debugging. The system is suitable for various wave bands, and specifically comprises a P wave band (frequency range coverage: 500 MHz-1000 MHz), an L wave band (frequency range coverage: 1 GHz-2 GHz), an S wave band (frequency range coverage: 2 GHz-4 GHz) and a C wave band (frequency range coverage: 4 GHz-8 GHz).
The pre-stage pushing amplifying unit comprises a pre-stage attenuator, a power divider, a low-noise amplifier, a numerical control attenuator, an equalizer, an attenuator, an amplifier, a numerical control attenuator, an amplifier, an isolator, a final-stage amplifier, a final-stage isolator and a coupler which are sequentially connected, wherein the output end of the coupler is connected with the final-stage power amplifying unit, and the input end of the pre-stage attenuator is connected with a signal source. The method comprises the steps of firstly playing the roles of signal isolation, amplitude reduction and equal transmission through an attenuator and a power divider, secondly amplifying a signal through low-noise amplification, then sequentially passing through a numerical control attenuator, an equalizer and an attenuator to control the amplitude consistency of the signal, then further amplifying the signal through an amplifier, a numerical control attenuator, an amplifier and an isolator, controlling link gain through the attenuator, improving impedance characteristics through the isolator, placing an excitation phenomenon between the two amplifiers, driving a final-stage amplifier to reach required power through the amplified signal, and finally outputting the signal after passing through the final-stage isolator and a coupler. The preceding stage promotes the amplification unit and has improved flatness, the phase place of waveform, has avoided signal oscillation, and the power synthesis of the power amplifier unit of the final stage of being convenient for improves the synthetic efficiency.
In this embodiment, the signal source outputs a radio frequency signal of 1mw to the preceding stage push amplifying unit, and a radio frequency signal of 1047W is obtained after the first stage amplification of the preceding stage push amplifying unit and is used as a driving signal of the final stage power amplifying unit. Radio frequency signal divides the ware module etc. to be sixteen way power signals through the merit, and sixteen way power signals synthesize one way microwave source signal by five power synthesizers of four unifications after the second level of final power amplifier module is enlargied respectively, and the peak power of this microwave source signal is 10KW (minimum), and harmonic suppression is less than or equal to-20 dBc, and spurious suppression: ≤ 70dBc, bottom noise: less than or equal to-80 dBm/Hz (open grid) and less than or equal to-138 dBm/Hz (closed grid).
The final power amplifier module adopts a GaN power tube, the GaN power tube is formed by cascading 64 power amplifier tubes 1, and the GaN power tube has the characteristics of high power density, high efficiency, high working frequency and the like. The power supply unit is a digital power supply, the digital power supply is electrically connected with the microprocessor, the digital power supply can sense the change of a circuit and a load, and the power level running condition is intelligently adjusted to optimize the efficiency in real time. The system also comprises a power amplifier monitoring unit, wherein the power amplifier monitoring unit is used for acquiring working state information, the working state information comprises the temperature and the output power of the power amplifier tube 1 and the voltage and the current of the grid electrode and the drain electrode of the power amplifier tube 1, the power amplifier monitoring unit comprises a microprocessor, a temperature sensor, a wave detector and a voltage and current sensor, the temperature sensor is connected with the microprocessor and is used for monitoring the temperature of the power amplifier tube 1, the wave detector is used for coupling and detecting the output power of each power amplifier tube 1, the coupling adopts microstrip line coupling, the wave detector is used for detecting the coupled output power, the detected voltage is processed by an operational amplifier and then is sent to the microprocessor, and the microprocessor can monitor the output power of the power amplifier tube 1; the voltage and current sensor is connected with the microprocessor and used for detecting the voltage and the current of the drain electrode and the grid electrode of the power amplifier tube 1, and when abnormity is detected and the grid voltage of the power amplifier tube 1 needs to be adjusted or the power supply needs to be turned off, the digital power supply is controlled by the microprocessor on the circuit to realize the detection.
The system further comprises a remote monitoring unit, the remote monitoring unit comprises a remote host, the microprocessor comprises a communication module, the microprocessor is in communication connection with the remote host through the communication module, and the microprocessor transmits the working state information to the remote host through the communication module and receives an operation instruction of the remote host. The microprocessor issues control requirements (grid voltage, leakage voltage setting and the like) from the remote host to the digital power supply, and the digital power supply configures the grid voltage or the leakage voltage value of the corresponding power amplifier tube 1 according to the requirements or performs operations such as power failure on the corresponding power amplifier tube 1. After the configuration is completed, the microprocessor reads the working state information and reports the working state information to the remote host in time, so that the remote host can judge the effectiveness and the rationality of remote control, and unattended operation can be realized in remote positions or places with severe environment.
The power amplifier tube 1 still is provided with heat radiation structure, and heat radiation structure includes oxygen-free copper 2, heat pipe array 4 and radiator 5, and oxygen-free copper 2 sets up under power amplifier tube 1, and heat pipe array 4 sets up between radiator 5 and oxygen-free copper 2, and heat pipe array 4 passes through the gas-liquid phase change of inside medium, can reach high heat conductivity, and its axial coefficient of thermal conductivity is about 50 times of aluminum alloy. The heat pipe array 4 is formed in the radiator 5 through a pressing process, so that the effect of temperature equalization of a bottom plate of the radiator 5 can be achieved, and the heat exchange efficiency of the radiator 5 can be greatly improved. And gap filling materials 3 are filled between the heat pipe array 4 and the oxygen-free copper 2. The gap filling material 3 is a phase change material, which has the high heat conducting property of grease, the easy handling property of the gasket and the characteristic of tearing and sticking. When the phase-change gap-filling material 3 reaches the phase-change temperature (generally at 45-55 ℃), the phase-change gap-filling material has excellent infiltration capacity, and the actually measured heat conduction effect is 5-10 times that of a common heat conduction pad. Oxygen-free copper 2 inlays in the aluminum alloy cavity of placing the final power amplifier module, lies in under power amplifier tube 1, because oxygen-free copper 2 heat conductivity is about 2 times of aluminum alloy, can provide a quick heat dissipation passageway for power amplifier tube 1. And the local embedding mode does not increase too much weight.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims (10)

1. An ultra-wideband high-power high-efficiency multiband transmission subsystem comprising: the signal source outputs a radio frequency signal to the preceding stage pushing amplification unit, the preceding stage pushing amplification unit outputs the radio frequency signal from the signal source to the final stage power amplification unit after carrying out first stage amplification on the radio frequency signal, and the signal source is used for supplying power to the preceding stage pushing amplification unit and the final stage power amplification unit;
the final-stage power amplification unit comprises a power divider module, a combiner module and a power divider module 2NThe power divider module is connected with the preceding stage push amplifying unit and is used for equally dividing the radio-frequency signal amplified by the first stage of the preceding stage push amplifying unit into 2NThe power signals are respectively output to 2NA final-stage power amplifier module for performing second-stage amplification on the power signal and outputting the power signal to a combiner module, wherein the combiner module is used for combining 2NSynthesizing the power signals after the second-stage amplification into a microwave source signal and outputting the microwave source signal, wherein N is a positive integer greater than one;
the combiner module comprises a plurality of power combiners, the power combiners adopt a ridge waveguide magic T space combination structure, the ridge waveguide magic T space synthesis structure comprises four coaxial waveguide conversion structures, three waveguide magic Ts and three isolation loads, wherein the three waveguide magic T comprises two first waveguide magic T and one second waveguide magic T, the input end of the coaxial waveguide conversion structure is connected with the final power amplifier module and is used for coaxially converting the power signal amplified by the second stage into a waveguide guided wave system for propagation, two input ends of the first waveguide magic T are respectively connected with output ends of the two coaxial waveguide conversion structures, two input ends of the second waveguide magic T are respectively connected with one output end of the two first waveguide magic T, and output ends of the three waveguide magic T are respectively connected with the three isolation loads.
2. The ultra-wideband high-power high-efficiency multiband transmission subsystem according to claim 1, wherein the pre-stage push amplifying unit comprises a pre-stage attenuator, a power divider, a low-noise amplifier, a digital control attenuator, an equalizer, an attenuator, an amplifier, a digital control attenuator, an amplifier, an isolator, a final-stage amplifier, a final-stage isolator and a coupler, which are connected in sequence, wherein an output end of the coupler is connected with the final-stage power amplifying unit, and an input end of the pre-stage attenuator is connected with the signal source.
3. The ultra-wideband high-power high-efficiency multiband transmission subsystem according to claim 1, wherein the final power amplifier module is implemented by using GaN power tubes, and the GaN power tubes are implemented by cascade synthesis of 64 power amplifier tubes.
4. The ultra-wideband high-power high-efficiency multiband emission subsystem according to claim 3, further comprising a power amplifier monitoring unit, wherein the power amplifier monitoring unit is configured to collect operating state information, the operating state information includes temperature and output power of the power amplifier tube, and voltage and current of a gate and a drain of the power amplifier tube, the power amplifier monitoring unit includes a microprocessor, a temperature sensor, a detector and a voltage and current sensor, the temperature sensor is connected to the microprocessor and configured to monitor the temperature of the power amplifier tube, and the detector is configured to couple and detect the output power of each power amplifier tube to obtain a detected voltage and transmit the detected voltage to the microprocessor; and the voltage and current sensor is connected with the microprocessor and is used for detecting the voltage and the current of the drain electrode and the grid electrode of the power amplification tube.
5. The ultra-wideband high-power high-efficiency multiband transmission subsystem according to claim 4, wherein the power supply unit is a digital power supply, and the digital power supply is electrically connected to the microprocessor.
6. The ultra-wideband high-power high-efficiency multiband transmission subsystem according to claim 5, further comprising a remote monitoring unit, wherein the remote monitoring unit comprises a remote host, the microprocessor comprises a communication module, the microprocessor is in communication connection with the remote host through the communication module, and the microprocessor transmits the operation status information to the remote host through the communication module and receives the operation instruction of the remote host.
7. The ultra-wideband high-power high-efficiency multiband emission subsystem according to claim 3, wherein a heat dissipation structure is further disposed at the power amplifier tube, the heat dissipation structure comprises oxygen-free copper, a heat pipe array and a heat sink, the oxygen-free copper is disposed right below the power amplifier tube, and the heat pipe array is disposed between the heat sink and the oxygen-free copper.
8. The ultra-wideband high power high efficiency multiband emission subsystem according to claim 7, wherein gap-fill material is filled between the heat pipe array and the oxygen-free copper.
9. The ultra-wideband high power high efficiency multiband emission subsystem according to claim 8, wherein said gap-fill material is a phase change material.
10. The ultra-wideband high-power high-efficiency multiband transmission subsystem according to claim 1, wherein a bidirectional coupler is further connected to the output end of the combiner module, and the microwave source signal is output after passing through the bidirectional coupler.
CN202111435562.5A 2021-11-29 2021-11-29 Ultra-wideband high-power high-efficiency multiband transmission subsystem Pending CN114421978A (en)

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CN115242200A (en) * 2022-09-15 2022-10-25 成都国盛军通科技有限公司 C-band radio frequency signal power amplification device and method
CN115378464A (en) * 2022-08-12 2022-11-22 江苏德是和通信科技有限公司 Synthetic switched systems of transmitter owner spare machine
CN117135132A (en) * 2023-10-26 2023-11-28 南京纳特通信电子有限公司 Multiport radio frequency matrix and control method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115378464A (en) * 2022-08-12 2022-11-22 江苏德是和通信科技有限公司 Synthetic switched systems of transmitter owner spare machine
CN115378464B (en) * 2022-08-12 2023-08-15 江苏德是和通信科技有限公司 Main and standby machine synthesis switching system of transmitter
CN115242200A (en) * 2022-09-15 2022-10-25 成都国盛军通科技有限公司 C-band radio frequency signal power amplification device and method
CN115242200B (en) * 2022-09-15 2023-01-06 成都国盛军通科技有限公司 C-band radio frequency signal power amplification device and method
CN117135132A (en) * 2023-10-26 2023-11-28 南京纳特通信电子有限公司 Multiport radio frequency matrix and control method thereof
CN117135132B (en) * 2023-10-26 2024-01-23 南京纳特通信电子有限公司 Signal control method of multi-port radio frequency matrix

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