摘要
本文论述了：（１）检测门限的高低与信号正确检测和误差的关系，（２）ＡＦＣ环路带宽如何选择，（３）输入信号的频漂对ＡＦＣ的影响。
This essay discusses : ( 1 ) The relation of the detection threshold values's height and the signal's correct detection and errors, ( 2 ) How to select the loop bandwidth of AFC, ( 3 ) The effect to AFC from the frequency floating of input signal.
