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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 |
| 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 |
| 7427897 |
Power amplifier with close-loop adaptive voltage supply |
Sep. 23, 2008 |
| 7427895 |
Doherty amplifier with improved linearity |
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 |
| 7405617 |
Dynamic biasing system for an amplifier |
Jul. 29, 2008 |
| 7405618 |
Method and apparatus for controlling a power amplifier in a mobile communication system |
Jul. 29, 2008 |
| 7405614 |
Circuit arrangement having an amplifier arrangement and an offset compensation arrangement |
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 |
| 7391261 |
Enhanced bandwidth envelope elimination and restoration |
Jun. 24, 2008 |
| 7392020 |
Table reference type predistorter |
Jun. 24, 2008 |
| 7388430 |
Enhanced digital predistortion |
Jun. 17, 2008 |
| 7386075 |
Apparatus for and method of optimizing the performance of a radio frequency receiver in the presence of interference |
Jun. 10, 2008 |
| 7382192 |
Bias current compensation circuit for a differential input stage |
Jun. 3, 2008 |
| 7379511 |
Method for reducing DC offset error for single ended and differential signals |
May. 27, 2008 |
| 7368985 |
High frequency power amplifier and transmitter |
May. 6, 2008 |
| 7369781 |
Burst mode optical receiver considering characteristic of extinction ratio of received optical signal |
May. 6, 2008 |
| 7359682 |
Apparatus and method for improving efficiency of power amplifier operating under large peak-to-average power ratio |
Apr. 15, 2008 |
| 7359680 |
Delay calibration in polar modulation transmitters |
Apr. 15, 2008 |
| 7345535 |
Power amplification apparatus of portable terminal |
Mar. 18, 2008 |
| 7342454 |
Analog multistage amplification circuit in the field of sensor |
Mar. 11, 2008 |
| 7339426 |
High efficiency linear amplifier employing dynamically controlled back off |
Mar. 4, 2008 |
| 7330077 |
Monolithically integrated power amplifier device |
Feb. 12, 2008 |
| 7327192 |
Adaptive predistortion for a transmit system with gain, phase and delay adjustments |
Feb. 5, 2008 |
| 7327191 |
Distortion compensating apparatus and method |
Feb. 5, 2008 |
| 7321635 |
Linearization of amplifiers using baseband detection and non-baseband pre-distortion |
Jan. 22, 2008 |
| 7319362 |
Power amplifying apparatus |
Jan. 15, 2008 |
| 7317352 |
Power amplifier |
Jan. 8, 2008 |
| 7312655 |
Apparatus and method for controlling bias adaptation bias of a high power amplifier |
Dec. 25, 2007 |
| 7305041 |
Peak suppression of multi-carrier signal with different modulation |
Dec. 4, 2007 |
| 7298214 |
Amplifying circuit with variable supply voltage |
Nov. 20, 2007 |
| 7295064 |
Doherty amplifier |
Nov. 13, 2007 |
| 7288987 |
RF amplifier employing active load linearization |
Oct. 30, 2007 |
| 7289778 |
Power circuit and communication device provided with same |
Oct. 30, 2007 |
| 7288988 |
Adaptive predistortion linearized amplifier system employing selective sampling |
Oct. 30, 2007 |
| 7282996 |
Electronic amplifier with signal gain dependent bias |
Oct. 16, 2007 |
| 7276966 |
Radio frequency envelope apparatus and method |
Oct. 2, 2007 |
| 7276967 |
Signal level adjusting apparatus, gain value updating method, and program |
Oct. 2, 2007 |
| 7274255 |
Efficient generation of radio frequency currents |
Sep. 25, 2007 |
| 7268625 |
Method and apparatus for a linear transconductance device |
Sep. 11, 2007 |
| 7262657 |
Bias control for reducing amplifier power consumption and maintaining linearity |
Aug. 28, 2007 |
| 7259630 |
Elimination of peak clipping and improved efficiency for RF power amplifiers with a predistorter |
Aug. 21, 2007 |
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