前言本文是一篇实用的研究报告,就目前在接收机设计中大家所关心的几个问题提出自己的看法并提供实际研究成果。本文所研究问题的立脚点是国内元器件,包括采用国产晶体管和场效应管如何进行线性设计、如何减小互调干扰、如何使用晶体滤波器和国产 Preface This article is a practical research report, on the current design of the receiver, we are concerned about several issues put forward their own views and provide practical research results. The main issue of this paper is the domestic components, including the use of domestic transistors and FETs how to design linear, how to reduce intermodulation interference, how to use the crystal filter and domestic