摘要
在通信、电子测量和教学实验等场合需要高精度、频率可变的信号源,现采用导致频率合成第二次革命的直接数字频率合成(DDS)技术实现可编程的信号源的方案。同时,也扩展为低频幅频特性测试系统的一个标准的扫频信号。
Signal source with high precision and changeable frequency is needed in communication,electronic measurement,teaching experiment and so on.This paper presents a design of a low frequency program-controlled signal source based on DDS technology.Meanwhile,the source can be conveniently expanded into a standard frequency sweep signal of a low-frequency magnitude-frequency characteristics tester.
出处
《信息技术》
2010年第7期116-118,共3页
Information Technology
