Sectored antenna communications receiver with squelch circuit

Details Sectored antenna communications receiver with squelch circuit Sectored antenna communications receiver with squelch circuit

1977-05-02

1979-05-08

Griffin, Robert L.

325478, H04B 110

Patent

active

041538781

ABSTRACT:
A receiver produced signal includes an information signal immediately preceded and followed by noise signals. The presence of an information signal is sensed by detector circuitry which, after an inherent delay interval, closes a squelch gate. The detector experiences an additional delay at the conclusion of an information signal.
To prevent both deletion of the initial portion of the information signal and a noise "tail" following said signal, a delay line, comprised of a bucket brigade device, is series coupled between the receiver and the squelch gate. The delay provided by the delay line is approximately equal to the inherent delay time of the detector means.

REFERENCES:
patent: 3206679 (1965-09-01), Miller
patent: 3979679 (1976-09-01), Bush et al.
patent: 4013962 (1977-03-01), Beseke et al.

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