相位锁定环描述
相位锁定环描述：相位锁定环是一种通信技术，输入一个之前经过幅度调制的接收信号，输出一个频率相同的正弦振荡信号。其原理根本上来说就是通过不断减小接收信号和本地振荡器信号之间的相位差，使得本地振荡器信号的频率不断逼近接收信号的频率.
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Summary
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