数字频率合成附加信道(SCA)调制器  

Digital Frequency Synthesizer Subsidiary Communications Authorization(SCA)Modulator

作　　者：陆堪 黄坚 

机构地区：[1]浙江省电子技术研究所

出　　处：《杭州电子科技大学学报（自然科学版）》1998年第2期55-61,共7页Journal of Hangzhou Dianzi University：Natural Sciences

摘　　要：本文提出了一种新型实用的SCA调制器设计方案。采用混频器加滤波的技术，解决了SCA调制器的高频率稳定度和六频偏的矛盾，并提出了实现低载波，低失真，低串扰的措施。This article introduce a new functional designment of SCA modulator. By using the tech-nology of adding mixer and filter, it solves the problem on the stability of high frequency and big frequency deviation of SCA modulator. And it also points out the methods to realize loW fre-quency carrier, low distortion and low main - side channel interference.

关 键 词：调制器 附加信道 频率合成 滤波器 混频 

分 类 号：TN76[电子电信—电路与系统]