分析双工无线电话机中场效应管的应用

The Analyses of Field-effect Transistor in Duplex Operation

双工无线电话机可作为移动通讯或固定通讯使用,适合于无线电通信爱好者开发与利用。本文主要阐述用场效管取代以往的晶体管应用在双工无线电话机的核心部分,改善系统噪声性能,抗干扰能力增强,提高接收机灵敏度,从而扩大了无线电话机的使用范围。

Duplexoperation radio telephone can work as movingcommunicationand fixing communication.It is suited to radio amateurs to develop and utilize.This paper analyses field dffect trransistor substituting for transistor to apply in heart of radiotelephone.It can improve in its performance,with improving system's noise figure,strength-eninganti-interferenceability,enbancing radio receiver's sensitivity and extending its usefulrange.