Adjacent channel interference suppressing system for FM receiver

摘要

An adjacent channel interference suppressing system for an FM receiver which includes a first detecting device for amplifying and demodulating an intermediate frequency signal which has passed through a wide-band filter; a second detecting device for amplifying and demodulating an intermediate frequency signal which has passed through a narrow-band filter; a level adjusting device for receiving FM detection signals from the first and second detecting devices, and for complementarily and continuously adjusting the levels of the FM detection signals; and a control signal generating device for generating a control signal for controlling the level adjusting device according to the presence or absence of an adjacent channel interference.