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Class Information
Number: 330/136
Name: Amplifiers > With control of power supply or bias voltage > With control of input electrode or gain control electrode bias > Bias control signal from input of amplifier
Description: Subject matter wherein "the bias control voltage" is derived from the input circuit of the amplifying device.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7622992 |
Power amplifier circuit having a bias signal inputted into input terminal and method thereof |
Nov. 24, 2009 |
| 7602243 |
Amplifier |
Oct. 13, 2009 |
| 7586374 |
Wireless communication unit, integrated circuit and biasing therefor |
Sep. 8, 2009 |
| 7583149 |
Power supply apparatus, amplifier apparatus, radio apparatus and reproducing apparatus |
Sep. 1, 2009 |
| 7567123 |
Adaptive bias current circuit and method for amplifiers |
Jul. 28, 2009 |
| 7560984 |
Transmitter |
Jul. 14, 2009 |
| 7558541 |
Amplifier gain and phase stabilizer |
Jul. 7, 2009 |
| 7554396 |
Power amplifier circuit for peak envelope modulation of high frequency signal |
Jun. 30, 2009 |
| 7541864 |
Power amplifier and pulse-width modulated amplifier |
Jun. 2, 2009 |
| 7541867 |
Polar amplifier |
Jun. 2, 2009 |
| 7538610 |
Method and system for enhancement of power amplifier efficiency through controlled variation of gain in a power Amplifier Driver |
May. 26, 2009 |
| 7535973 |
Correction method and correction loop for a complex digital signal |
May. 19, 2009 |
| 7531783 |
Variable gain constant bandwidth trans-impedance amplifier for fiber optic rate sensor |
May. 12, 2009 |
| 7525377 |
Method for controlling a linear power amplifier |
Apr. 28, 2009 |
| 7518441 |
Signal processor for use with a power amplifier in a wireless circuit |
Apr. 14, 2009 |
| 7519337 |
Transmitter and mobile communication terminal using the same |
Apr. 14, 2009 |
| 7515885 |
Communications signal amplifiers having independent power control and amplitude modulation |
Apr. 7, 2009 |
| 7515001 |
AC amplifier and piezoelectric vibrator oscillator |
Apr. 7, 2009 |
| 7514996 |
Distortion compensation amplifying apparatus |
Apr. 7, 2009 |
| 7508262 |
Envelope elimination and restoration amplifier harmonic energy recovery system and method |
Mar. 24, 2009 |
| 7504881 |
Power amplifier |
Mar. 17, 2009 |
| 7505824 |
Audio signal processing apparatus and audio signal processing method |
Mar. 17, 2009 |
| 7499502 |
Amplifier, information communication apparatus and amplification method |
Mar. 3, 2009 |
| 7498876 |
Amplifier having half-wave tracking power rails |
Mar. 3, 2009 |
| 7492223 |
Method and system for a highly efficient power amplifier utilizing dynamic biasing and predistortion |
Feb. 17, 2009 |
| 7479833 |
Dynamic biasing amplifier apparatus, dynamic biasing apparatus and method |
Jan. 20, 2009 |
| 7479832 |
Differential amplifying system |
Jan. 20, 2009 |
| 7474149 |
Radio frequency power amplifier and method using a controlled supply |
Jan. 6, 2009 |
| 7474880 |
Linear and non-linear dual mode transmitter |
Jan. 6, 2009 |
| 7466203 |
Solid state microwave power amplifier |
Dec. 16, 2008 |
| 7466197 |
Selecting samples for amplifier digital predistortion estimation |
Dec. 16, 2008 |
| 7466195 |
Error driven RF power amplifier control with increased efficiency |
Dec. 16, 2008 |
| 7463092 |
Amplifier with variable impedance transformation and method of amplification using the same |
Dec. 9, 2008 |
| 7459973 |
Method and apparatus for amplifying a signal modulated in amplitude |
Dec. 2, 2008 |
| 7457598 |
Signal amplifier system for a broadcast receiver |
Nov. 25, 2008 |
| 7454179 |
Radio frequency power detector and decision circuit used with DC supply voltage controlled power amplifiers |
Nov. 18, 2008 |
| 7446605 |
Amplifier arrangement with controllable gain and method for controlling an amplifier gain |
Nov. 4, 2008 |
| 7444125 |
Communications signal amplifiers having independent power control and amplitude modulation |
Oct. 28, 2008 |
| 7439809 |
Radio frequency power amplifier |
Oct. 21, 2008 |
| 7440733 |
Constant gain nonlinear envelope tracking high efficiency linear amplifier |
Oct. 21, 2008 |
| 7427895 |
Doherty amplifier with improved linearity |
Sep. 23, 2008 |
| 7427897 |
Power amplifier with close-loop adaptive voltage supply |
Sep. 23, 2008 |
| 7423484 |
Adaptive predistortion for a transmit system with gain, phase and delay adjustments |
Sep. 9, 2008 |
| 7420415 |
Method and apparatus for controlling a power amplifier in a mobile communication system |
Sep. 2, 2008 |
| 7409193 |
Predistortion circuit for a transmit system |
Aug. 5, 2008 |
| 7405614 |
Circuit arrangement having an amplifier arrangement and an offset compensation arrangement |
Jul. 29, 2008 |
| 7405618 |
Method and apparatus for controlling a power amplifier in a mobile communication system |
Jul. 29, 2008 |
| 7405617 |
Dynamic biasing system for an amplifier |
Jul. 29, 2008 |
| 7400192 |
Low noise amplifier and differential amplifier with variable gain mode |
Jul. 15, 2008 |
| 7397304 |
Auto gain control circuit |
Jul. 8, 2008 |
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