Circuit arrangement for automatic gain control

Details Circuit arrangement for automatic gain control Circuit arrangement for automatic gain control

1992-02-21

1993-07-13

Kuntz, Curtis

Pulse or digital communications

Repeaters

Testing

4552341, 369 49, H04L 2708

Patent

active

052280632

ABSTRACT:
An automatic gain control circuit includes an amplifier, the gain of which is to be controlled, and an input terminal for receiving an analog input signal. A first signal path is arranged between the input terminal and the amplifier and includes a controllable switch and a first filter. A second signal path is responsive to the input terminal and includes an analog-to-digital converter for providing digital signals representative of levels of the analog input signal. A signal processor receives the digital signals and provides control signals. A pulse width modulator receives the control signals and provides a pulse width modulated signal, the width of which varies in accordance with the digital signals, to the controllable switch.

REFERENCES:
patent: 4789995 (1988-12-01), Hurst et al.
patent: 5084791 (1992-01-01), Thanos et al.

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