摘要
介绍了基于多相滤波结构的数字下变频原理,对用于数字下变频的测频方法进行了理论分析,最后给出了仿真结果,证明该方法是简单易行的。这种测频方法对宽带数字接收机的设计有一定参考作用。
This paper introduces the principle of digital down-conversion（DDC） based on multiphase filtering configuration, analyzes the principle of frequency measurement method for digital downconverting,at last gives the simulation result. The simulation result proves that the frequency measurement method is feasible and easy, and is of reference effect for the design of wide band digital receiver.
出处
《舰船电子对抗》
2007年第5期88-92,共5页
Shipboard Electronic Countermeasure
关键词
多相滤波
数字下变频
快速测频
数字接收机
multiphase filtering
digital down-conversion
fast frequency measurement
digital receiver
