高频电路设计收音机机论文接收机.docVIP

编号： （高频电路设计与制作） 实训论文说明书 题 目： 调频接收机 院 （系）： 信息与通信学院 专 业： 电子信息工程 学生姓名： 学 号： 指导教师： 摘　　要 随着科学技术的发展，调频接收机的应用十分广泛，尤其消费类占有相当的市场，从分立元件组成的收音机到集成电路组成的接收机，调频接收机技术以达到十分成熟的地步。从普通的调幅接收机到高级调频接收机，调频接收机以较高的技术含量和较高的音质得到了广泛的欢迎。本文介绍了基于,采用系统的工作原理硬件设计方法。 关键词：调频、高频、接收机 Abstract With the development of science and technology, FM receiver used widely, especially consumer have quite market, from discrete components radio to integrated circuit composed of receiver, FM receiver technology to achieve very mature point. From the normal amplitude modulation receiver to senior FM receiver, FM receiver with high technology content and high quality has been widely welcomed. This paper introduces based on high frequency electronic circuit, the CXA1691M chip mixing, discriminator system working principle hardware design method of producing a simple FM receiver. The radio from its birth until now, go to the lavatory not only the media dissemination of information, but also promote the modern electronic technology and the more advanced the development of telecommunications equipment. Current frequency modulation type or amplitude modulation receiver, typically use the superheterodyne, it has a high sensitivity, stable, good selectivity and the advantages of small distortion. To understand the working principle of receiver and through the drawing principle diagram, welding circuit board, commissioning works and other electronic electrician practice for us to study electronic technical college students have a lot of meaning. This training report a simple analysis of the superheterodyne receiver circuit principle of work and its assembly and debugging, etc. Key words: receiver, high frequency, FM 目　　录 引言 1 1无线电及接收机的基本知识 1 1.1无线电发射接收基本原理 1 1.2收音机的发展及分类 1 2调频收音机的工作流程及原理 2 2.1调频收音机基本组成及信号流程 2 2.2接收机的工作原理及原理图 3 3各功能块电路原理及芯片介绍 4 3.1 CXA1691芯片功能介绍 4 3.2高频小信号放大电路 5 4接收机的工作频率及性能指标 6 4.1工作频率范围 6 4.2调频收音机性能指