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Class Information
Number: 330/134
Name: Amplifiers > With control of power supply or bias voltage > With control of input electrode or gain control electrode bias > Plural different bias control voltages provided by separate means
Description: Subject matter including at least two separate and distinct bias voltage control means as therein defined, wherein the control voltages are applied to input or gain control electrodes, and which may be applied to a single amplifying device or to more than one amplifying device.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7443245 |
High frequency power amplifier circuit and electronic component for high frequency power amplifier |
Oct. 28, 2008 |
| 7405617 |
Dynamic biasing system for an amplifier |
Jul. 29, 2008 |
| 7378881 |
Variable gain amplifier circuit |
May. 27, 2008 |
| 7355477 |
Transmitter power control loop for high-speed wireless LANs |
Apr. 8, 2008 |
| 7345537 |
Linear power amplifier with multiple output power levels |
Mar. 18, 2008 |
| 7227415 |
High frequency power amplifier circuit and radio communication system |
Jun. 5, 2007 |
| 7199657 |
Amplification gain stages having replica stages for DC bias control |
Apr. 3, 2007 |
| 7193459 |
Power amplifier control technique for enhanced efficiency |
Mar. 20, 2007 |
| 7167718 |
Transmission power control apparatus, transmission power control method, and mobile station |
Jan. 23, 2007 |
| 7123094 |
High frequency power amplifier circuit and radio communication system |
Oct. 17, 2006 |
| 7109791 |
Tailored collector voltage to minimize variation in AM to PM distortion in a power amplifier |
Sep. 19, 2006 |
| 7098732 |
Multi-stage variable gain amplifier utilizing overlapping gain curves to compensate for log-linear errors |
Aug. 29, 2006 |
| 7072130 |
Auto-ranging attenuators for read channels |
Jul. 4, 2006 |
| 7071782 |
HF amplifier with switchable gain |
Jul. 4, 2006 |
| 7038538 |
Folded cascode high voltage operational amplifier with class AB source follower output stage |
May. 2, 2006 |
| 7012464 |
Method and circuit for a dual supply amplifier |
Mar. 14, 2006 |
| 6937097 |
High-frequency power amplifier having differential inputs |
Aug. 30, 2005 |
| 6927630 |
RF power detector |
Aug. 9, 2005 |
| 6922093 |
Radio frequency amplifier and method of driving the same |
Jul. 26, 2005 |
| 6917244 |
Power control for a switching mode power amplifier |
Jul. 12, 2005 |
| 6903611 |
Automatic gain control device |
Jun. 7, 2005 |
| 6900694 |
High frequency power amplifier module and wireless communication apparatus |
May. 31, 2005 |
| 6828854 |
Method and circuit for a dual supply amplifier |
Dec. 7, 2004 |
| 6816013 |
Automatic gain control device |
Nov. 9, 2004 |
| 6788138 |
Transmission power control circuit |
Sep. 7, 2004 |
| 6778616 |
Radio reception apparatus and received power amplification method |
Aug. 17, 2004 |
| 6771124 |
System and method for low-noise amplifier with a high frequency response |
Aug. 3, 2004 |
| 6731167 |
High frequency power amplifier module and wireless communication apparatus |
May. 4, 2004 |
| 6727754 |
RF power detector |
Apr. 27, 2004 |
| 6724252 |
Switched gain amplifier circuit |
Apr. 20, 2004 |
| 6710662 |
Power amplifier with improved linearity and reduced transistor stacks |
Mar. 23, 2004 |
| 6696892 |
Large dynamic range programmable gain attenuator |
Feb. 24, 2004 |
| 6646510 |
Method of adjusting gain and current consumption of a power amplifier circuit while maintaining linearity |
Nov. 11, 2003 |
| 6642783 |
Amplification device with optimized linearity |
Nov. 4, 2003 |
| 6639461 |
Ultra-wideband power amplifier module apparatus and method for optical and electronic communications |
Oct. 28, 2003 |
| 6636114 |
High frequency power amplifier module and wireless communication apparatus |
Oct. 21, 2003 |
| 6630861 |
Variable gain amplifier |
Oct. 7, 2003 |
| 6621343 |
Open loop variable gain amplifier using replica gain cell |
Sep. 16, 2003 |
| 6614300 |
Dual current mirror power amplifier bias control |
Sep. 2, 2003 |
| 6577190 |
Linear gain control amplifier |
Jun. 10, 2003 |
| 6559717 |
Method and/or architecture for implementing a variable gain amplifier control |
May. 6, 2003 |
| 6538507 |
Automatic gain control circuit with high linearity and monotonically correlated offset voltage |
Mar. 25, 2003 |
| 6535068 |
System and method for temperature compensated IF amplifier |
Mar. 18, 2003 |
| 6492872 |
High frequency power amplifying module and wireless communication apparatus |
Dec. 10, 2002 |
| 6492869 |
Linear amplifier and radio communication apparatus using the same |
Dec. 10, 2002 |
| 6480068 |
Hardware assisted automatic gain control for digital subscriber line modems |
Nov. 12, 2002 |
| 6441686 |
Offset correction method and apparatus |
Aug. 27, 2002 |
| 6404283 |
Method and apparatus for amplifying a radio frequency signal |
Jun. 11, 2002 |
| 6380804 |
Method and apparatus for switching stages of a multistage amplifier quickly between operational modes |
Apr. 30, 2002 |
| 6359518 |
Signal level adjusting circuit using coupling stage for preventing variation from resulting in each operating point of first amplifying stage and second amplifying stage |
Mar. 19, 2002 |
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