一种基于CPLD的智能宽带去边沿抖动技术

A CPLD-based Intelligent Elimination Technique for Edge Trembling of Wideband Signals

随着电子技术的迅速发展,电子设计和电子测量技术不断得到提高,对信号的质量问题引起了更多的注意。本文针对电路设计和测量中经常碰到的信号边沿抖动问题,系统分析了这一常见现象的产生机理和危害。在总结常见解决方法的基础上,结合实际应用给出了一种全新的基于CPLD(复杂可编程逻辑器件)的智能宽带去抖动技术,该解决方案的主要开销是三个触发器、一个定时器和少量控制程序代码。最后在性能上做了对比分析。

With the development of the electronic technology, the technique of electronic design and electronic measurement has being improved. At the same time, the more and more attention has been paid on the signal quality. The problems of signal edge trembling in the electronic design and measurement are discussed frequently in this paper. The mechanism and the damages are analyzed systematically. Following the summary of ordinary solutions, a new intelligent elimination technique for edge trembling of wideband signal based on CPLD （Complex Programmable Logic Device） is proposed. Three triggers, one timer and a few control program codes are used in this solution. At last, a contradistinctive analysis is made to prove the excellent performance of this method.