Apparatus for automatically controlling a gain of a power...

Details Apparatus for automatically controlling a gain of a power... Apparatus for automatically controlling a gain of a power...

2006-12-12

2006-12-12

Pascal, Robert (Department: 2817)

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

Reexamination Certificate

active

07148747

ABSTRACT:
An apparatus for automatically controlling a gain of a power amplifier includes a reception-signal detecting unit which detects a reception signal; a reference-voltage generating unit which generates a reference voltage; a gain control voltage detecting unit which compares the detected reception signal with the generated reference voltage to detect a gain control voltage; a gain control unit which controls a gain of an input signal to output a gain signal based on the detected gain control voltage; an impedance matching unit which compensates for mismatched impedance of the gain control unit according to gain control; and a power amplifying unit which amplifies the gain signal.

REFERENCES:
patent: 5270824 (1993-12-01), Dobrovolny
patent: 6356150 (2002-03-01), Spears et al.
patent: 6362690 (2002-03-01), Tichauer
patent: 6930554 (2005-08-01), Mondal et al.
patent: 7031682 (2006-04-01), Hayashihara
patent: 7054605 (2006-05-01), Groe
patent: 2000-183675 (2000-06-01), None

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