Adjacent station interference rejecting circuit

Details Adjacent station interference rejecting circuit Adjacent station interference rejecting circuit

1982-01-20

1984-03-06

Hickey, R. J.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

455144, 455296, 455302, 381 94, H04H 500

Patent

active

044356188

ABSTRACT:
A circuit for eliminating a beat signal resulting from interference between a broadcast signal of a received station and a broadcast signal of an adjacent station during the reception of an AM broadcast. A cancel signal generating circuit for forming a cancel signal synchronized to the beat signal contained in an AM detected output signal is connected to the output of an AM detector. The cancel signal is combined with the AM detected output signal in a mixing circuit connected to the AM detector, to eliminate the beat signal. Such a beat signal cancelling circuit may be served by a pilot signal cancelling circuit in an FM receiver.

REFERENCES:
patent: 3995219 (1976-11-01), Rasehorn et al.
patent: 4047116 (1977-09-01), Ogita
patent: 4069398 (1978-01-01), Fujie
patent: 4192970 (1980-03-01), Kahn

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