Receiver squelch circuit with adjustable threshold

Details Receiver squelch circuit with adjustable threshold Receiver squelch circuit with adjustable threshold

1993-08-26

1995-04-18

Urban, Edward F.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency or phase modulation

455220, 327 72, H04B 110

Patent

active

054086949

ABSTRACT:
A receiver squelch circuit has a programmable DC threshold level. The squelch circuit includes input circuitry that responds to an incoming signal by generating a decision signal when the DC voltage level of the incoming signal crosses a predetermined threshold level. A programmable control network selectively varies the predetermined threshold level.

REFERENCES:
patent: 3106646 (1963-10-01), Carter
patent: 3550007 (1970-12-01), Schmitt
patent: 4176286 (1979-11-01), Shuffied, Jr.
patent: 4490838 (1984-12-01), Nishioka et al.
patent: 4648126 (1987-03-01), Toffolo
patent: 4743779 (1988-05-01), Valley
patent: 4991227 (1991-02-01), Kehler, Jr.
patent: 5003196 (1991-03-01), Kawaguchi
patent: 5014348 (1991-05-01), Boone et al.
patent: 5105104 (1992-04-01), Eisele et al.

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