公开(公告)号：US6160444A

公开(公告)日：2000-12-12

申请号：US840391

申请日：1997-04-29

Applicant: Wayne Leslie Horsfall ,  Gary Shipton

Inventor： Wayne Leslie Horsfall ,  Gary Shipton

IPC: H03L7/093 ,  H03D3/02 ,  H03D3/24 ,  H03D3/00 ,  H03L7/08

CPC classification number: H03D3/244

Abstract: A method of demodulating an FM carrier wave and an FM demodulation circuit are described which use a phase locked loop. The phase locked loop is tuned to a selected carrier wave frequency including the step of selecting a setting of the variable gain circuit in the phase locked loop to select desired loop gain.

Abstract translation: 描述了使用锁相环的解调FM载波和FM解调电路的方法。 锁相环被调谐到选定的载波频率，包括在锁相环中选择可变增益电路的设置以选择期望的环路增益的步骤。