Gain control methods and systems in an amplifier assembly

Details Gain control methods and systems in an amplifier assembly Gain control methods and systems in an amplifier assembly

2006-06-27

2006-06-27

Choe, Henry (Department: 2817)

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

C330S279000

Reexamination Certificate

active

07068100

ABSTRACT:
A Variable Gain Amplifier (VGA) amplifies an input signal according to a gain, to produce an amplified signal. A detector module detects a power indicative of a power of the amplified signal. A comparator module compares the detected power to a high threshold, a low threshold and a target threshold intermediate the high and low thresholds. A controller module changes the gain of the VGA so as to drive the detected power in a direction toward the middle threshold when the comparator module indicates the detected power is not between the high and low thresholds.

REFERENCES:
patent: 4066977 (1978-01-01), Chambers et al.
patent: 5077541 (1991-12-01), Gilbert
patent: 5432478 (1995-07-01), Gilbert
patent: 5684431 (1997-11-01), Gilbert et al.
patent: 6002356 (1999-12-01), Cooper
patent: 6232908 (2001-05-01), Nakaigawa
patent: 6255906 (2001-07-01), Eidson et al.
patent: 6377117 (2002-04-01), Oskowsky et al.
patent: 6577196 (2003-06-01), Hart
patent: 6597898 (2003-07-01), Iwata et al.
patent: 6600374 (2003-07-01), Nguyen et al.
patent: 6608524 (2003-08-01), Kawabe et al.
patent: 6621345 (2003-09-01), Matsugatani et al.
patent: 8203979 (1984-05-01), None
U.S. Appl. No. 09/438,687, Bult et al.
International Search Report issued Aug. 28, 2002 for Appln. No. PCT/USo1/21022, 6 pages.
Sam, B. “Direct Conversion Receiver for Wide-band CDMA,” Wireless Symposium, pp. 105, (Spring 2000).

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