Method for acquiring a rapid automatic gain control (AGC) respon

Details Method for acquiring a rapid automatic gain control (AGC) respon Method for acquiring a rapid automatic gain control (AGC) respon

1996-10-24

1998-03-03

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

4552401, 4552441, 375345, 330141, H04B 106

Patent

active

057246521

ABSTRACT:
A method for acquiring rapid automatic gain control (AGC) response in a narrow band receiver teaches opening the AGC loop (100), setting the gain control signal (106) amplitude of the AGC amplifier stage (104) to a known value, altering the gain control signal (106) amplitude over time, and monitoring the narrow band receiver for an output signal (112). Upon output signal (112) detection, halting alteration of the gain control signal (106) amplitude, closing the AGC loop (100) and commencing normal operation. A particular facet of this approach suggests detecting the output (112) with a varying gain detector (116,132) after the loop (100) is closed and before normal operations are commenced.

REFERENCES:
patent: 5130668 (1992-07-01), Emslie et al.
patent: 5361395 (1994-11-01), Yamamoto
patent: 5469115 (1995-11-01), Peterzell et al.
Seevinck, Evert "Analysis and Synthesis of Translinear Integrated Circuits" Elsevier--New York, 1988 p. 215.

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