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Class Information
Number: 330/85
Name: Amplifiers > Signal feedback > Amplifier in signal feedback path
Description: Subject matter wherein the "signal feedback circuit means" has an amplifier therein, as defined in the class definition, which may have bias control means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7423489 |
Low return loss resistive feedback amplifier |
Sep. 9, 2008 |
| 7420414 |
Amplifier, and step-down regulator and operational amplifier using the amplifier |
Sep. 2, 2008 |
| 7420152 |
Wide-range linear output photo sensor circuit |
Sep. 2, 2008 |
| 7403067 |
Compensation circuit for amplifiers having multiple stages |
Jul. 22, 2008 |
| 7397307 |
Amplifier arrangement having an adjustable gain, and use thereof |
Jul. 8, 2008 |
| 7372327 |
Input structure for a power amplifier and associated methods |
May. 13, 2008 |
| 7368982 |
Balanced output circuit and electronic apparatus utilizing the same |
May. 6, 2008 |
| 7359136 |
TMR/GMR amplifier with input current compensation |
Apr. 15, 2008 |
| 7355471 |
Circuit for DC offset cancellation |
Apr. 8, 2008 |
| 7348854 |
Automatic biasing and protection circuit for field effect transistor (FET) devices |
Mar. 25, 2008 |
| 7342445 |
Radio frequency power amplifier circuit and method |
Mar. 11, 2008 |
| 7332971 |
Multi-gigabit/s transimpedance amplifier for optical networks |
Feb. 19, 2008 |
| 7317351 |
Low noise amplifier |
Jan. 8, 2008 |
| 7301394 |
Impedance matched variable gain low noise amplifier using shunt feed-back |
Nov. 27, 2007 |
| 7292100 |
Interpolated variable gain amplifier with multiple active feedback cells |
Nov. 6, 2007 |
| 7289286 |
TMR/GMR amplifier with input current compensation |
Oct. 30, 2007 |
| 7265624 |
Amplifier circuit |
Sep. 4, 2007 |
| 7253680 |
Amplifier system with current-mode servo feedback |
Aug. 7, 2007 |
| 7250818 |
RF power amplifier circuit and RF transmitter and terminal including it |
Jul. 31, 2007 |
| 7239207 |
Transimpedance amplifier |
Jul. 3, 2007 |
| 7233199 |
Circuit and method of establishing DC bias levels in an RF power amplifier |
Jun. 19, 2007 |
| 7202732 |
Transimpedance amplifier with linearized transconductance feedback |
Apr. 10, 2007 |
| 7193471 |
High frequency power amplifier circuit and radio communication system |
Mar. 20, 2007 |
| 7183842 |
Optimum composite cascode amplifier |
Feb. 27, 2007 |
| 7164313 |
Method and apparatus for opening a feedback loop |
Jan. 16, 2007 |
| 7157976 |
High frequency amplifier |
Jan. 2, 2007 |
| 7154238 |
Semiconductor integrated circuit including a motor driving control apparatus having an amplitude regulation circuit |
Dec. 26, 2006 |
| 7132885 |
Low phase shift implementation of the baseband circuitry of a Cartesian feedback loop |
Nov. 7, 2006 |
| 7123095 |
High frequency power amplifier circuit and radio communication system |
Oct. 17, 2006 |
| 7116163 |
Buffer circuit |
Oct. 3, 2006 |
| 7113020 |
Capacitance multiplier circuit exhibiting improving bandwidth |
Sep. 26, 2006 |
| 7091773 |
Limiting circuit with level limited feedback |
Aug. 15, 2006 |
| 7088182 |
Class AB output stage circuit with stable quiescent current |
Aug. 8, 2006 |
| 7078965 |
Servo balancing among driver devices |
Jul. 18, 2006 |
| 7064605 |
Circuit and method of establishing DC bias levels in an RF power amplifier |
Jun. 20, 2006 |
| 7042284 |
Operational amplifier arrangement |
May. 9, 2006 |
| 7026870 |
Low-noise active RC signal processing circuit |
Apr. 11, 2006 |
| 7005950 |
Negative impedance converter |
Feb. 28, 2006 |
| 7002308 |
Motor driving control method and apparatus with amplitude regulation circuit |
Feb. 21, 2006 |
| 7002409 |
Compensation circuit for amplifiers having multiple stages |
Feb. 21, 2006 |
| 6998913 |
Method and apparatus for linear low-frequency feedback in monolithic low-noise charge amplifiers |
Feb. 14, 2006 |
| 6995610 |
Amplifier and radio frequency tuner |
Feb. 7, 2006 |
| 6975734 |
Audio apparatus of negative driving with adaptive gain control |
Dec. 13, 2005 |
| 6919763 |
Transconductance amplifier for inductive loads and method for driving inductive loads |
Jul. 19, 2005 |
| 6870427 |
Process and device for controlling the operation of a bipolar transistor in class A |
Mar. 22, 2005 |
| 6844784 |
Wide dynamic range transimpedance amplifier |
Jan. 18, 2005 |
| 6831510 |
Continuous low-frequency error cancellation in a high-speed differential amplifier |
Dec. 14, 2004 |
| 6822506 |
Amplitude and rise-time sensitive timing-shaping filters with built-in pulse-tail cancellation for high count-rate operation |
Nov. 23, 2004 |
| 6819172 |
DC offset cancellation techniques |
Nov. 16, 2004 |
| 6816010 |
Transimpedance amplifier |
Nov. 9, 2004 |
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