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Class Information
Number: 330/129
Name: Amplifiers > With control of power supply or bias voltage > With control of input electrode or gain control electrode bias
Description: Subject matter wherein the "means to control the bias voltage" is applied to an input electrode of the amplifying device, or to an electrode separate and distinct from the signal input electrodes and in vacuum tube amplifiers also separate and distinct from the anode or screen grid electrodes in order to control the bias of such electrode.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619477 |
Current sense amplifier for voltage converter |
Nov. 17, 2009 |
| 7606544 |
System for dynamic control of automatic gain control take-over-point and method of operation |
Oct. 20, 2009 |
| 7595692 |
Automatic gain control circuit |
Sep. 29, 2009 |
| 7595694 |
Electronics parts for high frequency power amplifier |
Sep. 29, 2009 |
| 7587188 |
Radio wave reception device, radio wave clock, and repeater |
Sep. 8, 2009 |
| 7583137 |
Power supply compensation |
Sep. 1, 2009 |
| 7560993 |
Amplifier |
Jul. 14, 2009 |
| 7557653 |
Shared linearity maintenance in power amplifiers |
Jul. 7, 2009 |
| 7549157 |
Automatic gain-setting in relaying device |
Jun. 16, 2009 |
| 7546098 |
Control system with selective open-loop operation |
Jun. 9, 2009 |
| 7541867 |
Polar amplifier |
Jun. 2, 2009 |
| 7542741 |
System and method for power mapping to compensate for power amplifier gain control variations |
Jun. 2, 2009 |
| 7535297 |
Architecture and method for improving efficiency of a class-A power amplifier by dynamically scaling biasing current thereof as well as synchronously compensating gain thereof in order to main |
May. 19, 2009 |
| 7528649 |
Method for designing input circuitry for transistor power amplifier |
May. 5, 2009 |
| 7522892 |
Power amplifier with serial interface and associated methods |
Apr. 21, 2009 |
| 7519337 |
Transmitter and mobile communication terminal using the same |
Apr. 14, 2009 |
| 7515880 |
Variable gain frequency multiplier |
Apr. 7, 2009 |
| 7508262 |
Envelope elimination and restoration amplifier harmonic energy recovery system and method |
Mar. 24, 2009 |
| 7501888 |
Gain control methods and systems in an amplifier assembly |
Mar. 10, 2009 |
| 7498877 |
Power amplifier with automatic switching function |
Mar. 3, 2009 |
| 7483678 |
Single chip GSM/EDGE transceiver architecture with closed loop power control |
Jan. 27, 2009 |
| 7483727 |
Mobile wireless communications device having improved antenna impedance match and antenna gain from RF energy |
Jan. 27, 2009 |
| 7477106 |
Power amplifier with bias control |
Jan. 13, 2009 |
| 7477102 |
High efficiency linear microwave power amplifier |
Jan. 13, 2009 |
| 7474149 |
Radio frequency power amplifier and method using a controlled supply |
Jan. 6, 2009 |
| 7474157 |
Power amplifier |
Jan. 6, 2009 |
| 7463092 |
Amplifier with variable impedance transformation and method of amplification using the same |
Dec. 9, 2008 |
| 7463091 |
Communication semiconductor integrated circuit device and wireless communication system |
Dec. 9, 2008 |
| 7456690 |
Automatic gain control using multi-comparators |
Nov. 25, 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 |
| 7450916 |
Excess current and saturation detection and correction in a power amplifier |
Nov. 11, 2008 |
| 7446605 |
Amplifier arrangement with controllable gain and method for controlling an amplifier gain |
Nov. 4, 2008 |
| 7443236 |
CDMA power amplifier design for low and high power modes |
Oct. 28, 2008 |
| 7436334 |
Amplifier, analogue to digital converter, methods of amplifying and of converting an analogue input signal to a digital output signal and of producing a mineral hydrocarbon fluid |
Oct. 14, 2008 |
| 7427894 |
Dual-mode, dual-load high efficiency RF power amplifier |
Sep. 23, 2008 |
| 7411456 |
AGC circuit |
Aug. 12, 2008 |
| 7382296 |
System for mixed analog-digital automatic gain control |
Jun. 3, 2008 |
| 7382186 |
Amplifiers with high efficiency in multiple power modes |
Jun. 3, 2008 |
| 7362172 |
Variable gain circuit |
Apr. 22, 2008 |
| 7352244 |
Electronics parts for high frequency power amplifier |
Apr. 1, 2008 |
| 7345536 |
Amplifier circuit and control method thereof |
Mar. 18, 2008 |
| 7342445 |
Radio frequency power amplifier circuit and method |
Mar. 11, 2008 |
| 7340228 |
Apparatus and method for high efficiency RF power amplification using drain bias adaptation |
Mar. 4, 2008 |
| 7333781 |
Power correction loop for a power amplifier |
Feb. 19, 2008 |
| 7323922 |
Digitally controlled gain stage having an analogue control input |
Jan. 29, 2008 |
| 7319363 |
Method and circuit for controlling amplification |
Jan. 15, 2008 |
| 7317352 |
Power amplifier |
Jan. 8, 2008 |
| 7298212 |
Automatic level control circuit with improved attack action |
Nov. 20, 2007 |
| 7295073 |
Automatic gain control apparatus |
Nov. 13, 2007 |
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