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砷化镓场效应功率管(GaAs Power FET)的主要应用之一是用作卫星通讯转发器。最近一个报告谈到一种C波段7级放大器,其输出功率10瓦,增益50分贝,瞬时带宽40兆赫,效率33.4％。本文将叙述一种适合于空间飞行器环境的砷化镓场效应管放大器,这种放大器有一个恒温网络,以改善空间飞行器的环境性能。已经设计出一个6级放大器,频率从3.7—4.2千兆赫,瞬时带宽为300兆赫,这个放大器的直流漏偏压是8.5伏,频带中心输出功率为10瓦,
One of the main applications of gallium arsenide field effect power transistors (GaAs Power FETs) is for use as a satellite communications repeater. A recent report referred to a C-band Class 7 amplifier with an output of 10 watts, a gain of 50 dB, an instantaneous bandwidth of 40 MHz and an efficiency of 33.4%. This article will describe a gallium arsenide FET amplifier suitable for spacecraft environments that has a constant temperature network to improve the environmental performance of the spacecraft. A 6-stage amplifier has been designed with a frequency of 3.7-4.2 gigahertz and an instantaneous bandwidth of 300 MHz. This amplifier has a dc-to-drain bias of 8.5 volts and a band-center output of 10 watts,