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Power amplifier for Ku-waveband for satellite

A power amplifier and ku-band technology, which is applied in the field of aerospace microwave active product design and manufacture, can solve the problems of inability to suppress the out-of-band gain of the power amplifier.

Active Publication Date: 2012-12-19
NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

THalesAlenia's Ku-band power amplifier microwave amplifying circuit consists of microwave power monolithic and microwave power tube components, but there is no band-pass filter and power modulation circuit, which cannot suppress the out-of-band gain of the power amplifier

Method used

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  • Power amplifier for Ku-waveband for satellite

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing, the present invention is further described in detail:

[0014] The invention relates to a Ku-band power amplifier for satellites, which comprises a microwave amplifying circuit, a power modulation circuit, a second harmonic suppression circuit and a secondary power supply that provides secondary voltage and telemetry signals and responds to remote control commands. Wherein, the microwave amplifying circuit comprises a power amplifying monolithic 7, a bandpass filter 9, and inner matching tubes 11, 12, and 13 connected in sequence, and at the input and output terminals of the microwave amplifying circuit 1, the power amplifying monolithic 7 An isolator is set at the output end and the input end of the internal matching tube 11, specifically, the input end is connected to the isolator 6 by a microstrip, the output end is directly output by the isolator 14, and the output end of the power amplifier 7 is provided with an isolat...

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Abstract

The invention discloses a high-reliable power amplifier for a Ku-waveband for satellites. The power amplifier comprises a microwave amplifying circuit, a band-pass filter, a power source modulator circuit, and a second harmonics suppression circuit. The microwave amplifying circuit comprises a power amplification single chip, a filter and a power tube. The second harmonics suppression circuit is formed by a high impedance wire and a low impedance wire. The power source modulator circuit is formed by a driving circuit and an MOS (metal oxide semiconductor) tube. Modular design is utilized, thermal design and derating design are effectively performed, high-confidence reliability demonstration and experimental technique, accelerated life test method, and reliability degree prediction technique are utilized, and output power of the Ku-waveband is enabled to be higher than 15W. The power amplifier is a satellite-used GaAs solid amplifier with the gain larger than 35dB.

Description

technical field [0001] The invention relates to the field of design and manufacture of aerospace microwave active products, is widely used in satellite radar systems, and can amplify the power of Ku-band up-conversion signals and transmit them from antennas. Background technique [0002] The satellite Ku-band power amplifier is an instrument that amplifies the input Ku-band signal and outputs it. At present, only the 55th Research Institute of China Electronics Technology Group Corporation is developing it in China, and other units have no relevant research and development records and reports. Only the European THalesAlenia company has development records and finished products. THalesAlenia's Ku-band power amplifier microwave amplifying circuit consists of microwave power monolithic and microwave power tube components, but without a band-pass filter and power modulation circuit, it cannot suppress the out-of-band gain of the power amplifier. Contents of the invention [0...

Claims

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Application Information

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IPC IPC(8): H03F3/20
Inventor 汪宇罗运生周明胡广华
Owner NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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