Automatic gain control apparatus

Details Automatic gain control apparatus Automatic gain control apparatus

1987-03-18

1989-05-09

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

455246, 375 98, H04L 2708

Patent

active

048295930

ABSTRACT:
An automatic gain control apparatus of the digital control type achieves fine control over the output amplitude of the gain controlled signal without increasing the number of bits handled by the A/D and D/A converters. The system operates by adding the output of a digital AGC converter to a variable step voltage which is set in response to the detected D.C. level of the signal to be gain-controlled.

REFERENCES:
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patent: 4222118 (1980-09-01), Dickinson et al.
patent: 4385400 (1983-05-01), Malchow
patent: 4479253 (1984-10-01), Daniel, Jr.
patent: 4499586 (1985-02-01), Cafaiella et al.
patent: 4546326 (1985-10-01), Van Uffelen et al.
patent: 4606075 (1986-08-01), Eastmond
patent: 4625240 (1986-11-01), Yablonski
patent: 4691337 (1987-09-01), Yoshihara et al.
patent: 4691377 (1987-09-01), Yoshihara et al.

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