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Class Information
Number: 330/132
Name: Amplifiers > With control of power supply or bias voltage > With control of input electrode or gain control electrode bias > Frequency selective means to select control signal from amplifier channel
Description: Subject matter wherein the "means to control the bias voltage" is derived from the electrical signal channel through a frequency selective means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7429891 |
Method and system for low noise amplifier (LNA) gain adjustment through narrowband received signal strength indicator (NRSSI) |
Sep. 30, 2008 |
| 7148747 |
Apparatus for automatically controlling a gain of a power amplifier and associated methods |
Dec. 12, 2006 |
| 6954623 |
Load variation tolerant radio frequency (RF) amplifier |
Oct. 11, 2005 |
| 6853242 |
Power supply based audio compression for digital audio amplifier |
Feb. 8, 2005 |
| 6812789 |
RF power amplifier digital gain flattening over multiband frequencies |
Nov. 2, 2004 |
| 6791406 |
Power servo-loop, an RF signal amplifier circuit, and an RF signal transmitter fitted with such a circuit |
Sep. 14, 2004 |
| 6765436 |
Power supply based audio compression for digital audio amplifier |
Jul. 20, 2004 |
| 6741128 |
Distortion canceling circuit |
May. 25, 2004 |
| 6683496 |
System and method for minimizing dissipation in RF power amplifiers |
Jan. 27, 2004 |
| 6608523 |
System and method for producing a pilot signal in a distortion reduction system |
Aug. 19, 2003 |
| 6545536 |
Biasing circuit for VGS drift and thermal compensation of a power device |
Apr. 8, 2003 |
| 6525605 |
Power amplifier system having frequency and amplifier failure compensation |
Feb. 25, 2003 |
| 6304145 |
Large signal amplifier gain compensation circuit |
Oct. 16, 2001 |
| 6246285 |
AGC circuit based on a peak detection system |
Jun. 12, 2001 |
| 6147555 |
Amplification system having mask detection |
Nov. 14, 2000 |
| 6111461 |
High frequency amplifier circuit |
Aug. 29, 2000 |
| 6072824 |
Circuit arrangement for reducing intermodulation in a bandpass filter system |
Jun. 6, 2000 |
| 5990746 |
Amplifier system |
Nov. 23, 1999 |
| 5923215 |
Linearized amplifier |
Jul. 13, 1999 |
| 5814752 |
Musical instrument crossover circuits and method of using same |
Sep. 29, 1998 |
| 5712593 |
Linear power amplifier with distortion detection |
Jan. 27, 1998 |
| 5694082 |
Circuit arrangement for determining intermodulation products |
Dec. 2, 1997 |
| 5546050 |
Radio frequency bus leveling system |
Aug. 13, 1996 |
| 5220287 |
Voice processing apparatus |
Jun. 15, 1993 |
| 4468630 |
Wide-band amplifier for driving capacitive load |
Aug. 28, 1984 |
| 4293937 |
Borehole acoustic telemetry system |
Oct. 6, 1981 |
| 4281295 |
Noise reducing apparatus |
Jul. 28, 1981 |
| 4219780 |
Gain controlled amplifier circuits |
Aug. 26, 1980 |
| 4185248 |
Input level supervisory system for level regulator |
Jan. 22, 1980 |
| 4114115 |
Compandor apparatus |
Sep. 12, 1978 |
| 4101849 |
Adaptive filter |
Jul. 18, 1978 |
| 3978422 |
Broadband automatic gain control amplifier |
Aug. 31, 1976 |
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