摘要
跟踪滤波器是跟随接收机输出端的信号处理装置，它通过锁相环和采样滤波器来跟踪和提纯中心频谱。本文介绍一种开关式窄频跟踪滤波器的原理，设计电路及其典型应用。
Introduces the principle of a narrow band tracking filter of the switch type, designs its circuits and describes its typical applications.
关键词
跟踪滤波器
窄带
锁相环
设计
应用
Tracking filter
Receiver
Narrow band
Sampling
Phase locking loops
