调频立体声设计-------接收解码（包括开题报告，翻译文献等）

目次 1. 调频立体声广播………………………………………………………………1 1.1调频广播发展史及调频原理…………………………………………………1 1.2调频立体声的编码过程………………………………………………………4 2. 调频立体声的接收……………………………………………………………7 2.1高频电路………………………………………………………………………11 2.2高频放大电路…………………………………………………………………14 2.3变频电路………………………………………………………………………16 2.4中频放大电路…………………………………………………………………18. 2.5频率合成电路…………………………………………………………………19 2.6自动频率控制电路……………………………………………………………20 2.7限幅电路………………………………………………………………………21 2.8鉴频器电路……………………………………………………………………24. 3.立体声解调器……………………………………………………………………26 3.1矩阵方式立体声解调器………………………………………………………26 3.2开关方式立体声解调器………………………………………………………27 3.3锁相环立体声解调器…………………………………………………………29 4整机实现…………………………………………………………………………31 4.1调频调谐器BA4408F…………………………………………………………31 4.2中频放大电路BA4428L………………………………………………………32 4.3调频立体声解码器BA1362F…………………………………………………34 4.4芯片连接………………………………………………………………………36 调频立体声本文主要是对调频立体声接收机系统的实现，共分为四章，第一章是前言部分，主要阐述调频立体声的发展史以及调频原理；第二章阐述的是调频立体声的接收，这一部分与单声道接收机的差别不是很大，主要由高频放大器，混频器，本机振荡器，中频放大器，限幅器以及调频鉴频器，他们的原理以及典型电路图；第三章主要阐述的是调频立体声解码器，它的实现共有三种方式：矩阵方式，开关方式，以及锁相环方式，经过比较，由于锁相环立体声解码器具有许多优越性，所以在该系统中就采用了锁相环方式；第四章就是整机的实现，由于每一部分的实现都有很多方式，所以并没有仔细分析每个电路的有缺点，而是从宏观上比较了芯片的性能，采用了文中所示的三个芯片。对于调频立体声接收机，影响其性能的主要部分是高频接收和立体声解码，所以文中对这两部分尤其是立体声解码作了比较详细的介绍，于其他部分则采用了常规芯片。 关键词 调频 立体声 接收机 解码器 限幅器 Title FM STEREO Abstract This text receives to the frequency modulation stereo primarily the machine system realizes, is divided into totally four chapters, chapter 1 is a foreword part, expatiating high fidelity development in frequency modulation history and frequency modulation principles primarily;What chapter 2 expatiate is a frequency modulation to receive high fidelityly, this a the part is very big with single a difference for receiving machine not, main from high the enlarger of feequency , the machine of frequency-composed, this machine flaps the shaking machine, inside shaking enlarger, limit a machine and frequency modulation frequency-inspect machine, their principle and typical model electric circuit diagram;Chapter 3 expatiates primarily of is a high fidelity solution in frequency modulation code machine, it realizes to have three kinds of methods totally:Matrix method, switch method, and lock mutually wreath method, through comparison, because of lock mutually high fidelity solution in wreath code tool contain a lot of superior, so in that system adopted the lock mutually wreath method;A function for is whole machine realizing, because of eachly first part ofly realizing all having a lot of ways, so without careful analysis each electric circuit having weakness, but from macro view lastly comparing integrated circuit , adopt three IC shown in the text.Receive the machine to the frequency modulation stereo, affect the main part of its function is a high freequencyto receive to solve the code with the stereo, so text inside to these two parts is a high fidelity solution code particularly Made the detailed introduction, then adopted in the other part normal regulations IC. Keywords stereo FM decoder receiver frequency