Signal seeking stop circuit for amplitude modulated receiver

Details Signal seeking stop circuit for amplitude modulated receiver Signal seeking stop circuit for amplitude modulated receiver

1979-08-08

1981-04-14

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

H03J 718

Patent

active

042623634

ABSTRACT:
A circuit for terminating the signal seeking mode of operation of an AM receiver includes a comparator which responds to a composite signal comprising a broadband IF signal and the detected IF signal strength. A control signal is produced when the composite signal exceeds a predetermined threshold. The broadband component of the composite signal is effective as a blanking potential when the receiver is off-channel. A second comparator is utilized to establish local sensitivity so that local and distant sensitivity settings are not interrelated.

REFERENCES:
patent: 2884519 (1959-04-01), Masselin
patent: 3599099 (1971-08-01), Tatebayashi
patent: 3947774 (1976-03-01), Glennon et al.

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