Automatic gain control circuit with low distortion

Details Automatic gain control circuit with low distortion Automatic gain control circuit with low distortion

1999-01-22

2000-04-25

Pascal, Robert

Amplifiers

With semiconductor amplifying device

Including gain control means

330310, H03G 310

Patent

active

060548991

ABSTRACT:
An automatic gain control circuit is described, comprising: a resistance control node, a first field-effect transistor, a second field-effect transistor, an inductor, a first resistor, a second resistor, a first capacitor, and a second capacitor. The inductor is connected in series with the field-effect transistors. The first resistor is connected between the gate of the first field-effect transistor and the resistance control node while the second resistor is connected between the gate of the second field-effect transistor and the resistance control node. The first capacitor is connected between the gate and drain of the first field-effect transistor, whereas the second capacitor is connected between the gate and source of the second field-effect transistor.

REFERENCES:
patent: 2812390 (1957-11-01), Overbeek
patent: 4987382 (1991-01-01), Saitoh
patent: 5083095 (1992-01-01), Madaffari
patent: 5389891 (1995-02-01), Phillippe
patent: 5563545 (1996-10-01), Scheinberg

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