摘要
分析了采用地址计数器原理实现的双相信号发生器的局限性,介绍了应用直接数字合成技术(DDS)基本原理、采用可编程逻辑器件实现的双相信号发生器的方法。该技术可以扩展信号发生器的频段,提高相位分辨率,还可以实现两路独立信号发生器的功能,大大提高了仪器的应用范围。
The paper analyzes the limitation of the two-channel function gen er ator by us-ing the principle of addressing counter.It introduces the primary t heory of Direct Data Synthesize technique and the means to realize the two-chan nel function generator.This principle extends the range of frequency,increases the resolution of phase and realizes the function of two-channel independent function generator,which makes this instru-mentation applied widely.
出处
《电测与仪表》
北大核心
2002年第8期17-19,共3页
Electrical Measurement & Instrumentation
