关键词: 场效应晶体管, 微波接收机, 应用

Abstract: This paper describes a scheme of an all-FET C-band low-noisewide-band microwave receiver for use in communication satellite.The recei-ver covers the full spectrum assigned to the satellite communication with about 68.5 dB power gain and noise figure of less than 2.5 dB.To prove the reali-zability of this receiver scheme,several microwave components,such as low-noise amplifiers,band-pass and band-stop filters,FET balanced mixer,gain-compensation circuits etc have been developed.All of the elements and FETdevices used in the experiments are native products.The test results are presentedin this paper too.By means of the advantages which the FETs offered invarious microwave applications,we can realize a microwave receiver with smallsize,light wight,low power consumption and good retransmission performance.

Key words: Subject Term Field effect transistor, Microwave receiver, Application.