Reception automatic gain control system and method

Details Reception automatic gain control system and method Reception automatic gain control system and method

1996-06-03

1998-07-21

Chin, Stephen

Pulse or digital communications

Receivers

Automatic gain control

4552341, H04L 2708

Patent

active

057844100

ABSTRACT:
An automatic gain control system is disclosed which incorporates a control error amplitude limiting circuit to provide fine gain control for relatively small control error values, while providing limited gain renewal values to maintain amplifier stability for relatively large control error values. In another embodiment, an automatic gain control system is disclosed which incorporates a variable scaling means which scales the control error with coefficients selected in accordance with the positive or negative sign of the control error to provide maximum control loop response rates which are the same for both increases and decreases in signal power. Automatic gain control systems and methods are disclosed which respectively limit the control error amplitude and scale the control error with coefficients selected on the basis of the cotnrol error being either positive or negative, to provide improved, more precise, and more symmetrical amplifier gain control.

REFERENCES:
patent: 5448595 (1995-09-01), Kaku et al.
patent: 5452332 (1995-09-01), Otani et al.

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