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这里主要介绍三端的微波半导体器件。三端微波器件可分为双极晶体管和场效应晶体管两大类。在微波频率范围内,这两类器件都可用于微波低噪声放大和微波功率源。微波双极晶体管已有较长的发展史,早已得到普遍应用,但到目前为止,只能用于C波段以下,而场效应晶体管在C到Ku波段还保持良好的微波性能。从电路应用来说,一般用双极晶体管较为简单,在放大器中容易作到宽带匹配,而用场效
Here mainly introduces three-terminal microwave semiconductor devices. Three-terminal microwave devices can be divided into two categories of bipolar transistors and field-effect transistors. Both types of devices are available for microwave low noise amplification and microwave power sources in the microwave frequency range. Microwave bipolar transistors have a long history of development and have long been widely used, but so far they can only be used below the C band, while the field effect transistors maintain good microwave performance in the C to Ku band. From the circuit applications, the general use of bipolar transistors is relatively simple, easy to make broadband in the amplifier match, and the use of field