摘要
目前实验室常用的信号源一般都是用模拟电路来产生所需的信号。模拟信号有着显示不直观、输出不稳定、低频信号差等缺点。本文介绍一种采用DDS+PLL技术来实现数字式信号源的基本方法和原理,设计电路提供了数字式的直接输入,操作简单、显示直观,以满足实验室的实际需要。
Currently the common laboratory signal source generally is generated by analog circuit. There are some weakness ahout analog signal such as indirect display, output unsteady and low resolution, etc.This paper introduces a basic method and principle using the technology of DDS＋PLL to realize digital signal source. Digital circuit have some advantage such as direct importation, operation simple and direct display to satisfy the effective demand of laboratory.
出处
《科技广场》
2007年第9期217-218,共2页
Science Mosaic
关键词
锁相环
DDS
数字式
信号源
PLL（Phase Locked Loop）
DDS
Digital
Signal Source
