摘要
本文对目前正在美国市场上竞争的两种 AM 立体声体制之一(卡恩制)的实现构思和方案进行了介绍.卡恩制 AM 立体声的关键在于如何更完善地把 L、R 信号各自置放在发射载频的下、上两侧边带之中.为此,需要采用边带补偿技术,本文开发了一种易于在 IBM-PC 计算机上执行的计算卡恩制采用边带补偿后的调幅、调相波频谱的方法.此方法也适用于分析在电力系统中采用独立边带来传送通信调度信号所占据的频谱.
In this paper,one of the two types of AM sterco system which are competing cach other on the Amcrican markets(i.c.Kahn AM stereo system)is pres- ented,including its realization idea and variant designs.The key point of Kahn system lies in the fact whether you can more perfectly put the L.R signals separately on the lower sideband and upper sideband of the transmitted carrier.It is necessary to use sideband elimination techniq ues for this purpose.Also in this paper we develop an algorithm and program which is easily executed on IBM—PC computer to calculate the transmitted RF spectrum fo Kahn's AM stereo transmitter employing sideband climination techniques.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
1989年第5期481-488,共8页
Journal of University of Electronic Science and Technology of China
关键词
AM立体声
发射机
边带补偿
广播
AM sterco
sideband climination technique
medium wave AM broadcasting
