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Class Information
Number: 330/127
Name: Amplifiers > With control of power supply or bias voltage
Description: Subject matter combined with means to control the voltage of the source of electrical energy which is supplied to the amplifying device, or combined with means to control a bias voltage applied to an electrode, such control means, generally, being applied to stabilize the power supply or bias voltage or to alter the operation of the amplifying device in a predetermined manner as, for example, to control the signal amplitude, or means to regulate the power, heater, or filament supply of the amplifying device.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7589586 |
High frequency signal detection circuit |
Sep. 15, 2009 |
| 7571415 |
Layout of power device |
Aug. 4, 2009 |
| 7541864 |
Power amplifier and pulse-width modulated amplifier |
Jun. 2, 2009 |
| 7535973 |
Correction method and correction loop for a complex digital signal |
May. 19, 2009 |
| 7532067 |
Amplifier device with adjustable supply voltage |
May. 12, 2009 |
| 7512387 |
Method and control system for controlling the output power of an RF amplifier system |
Mar. 31, 2009 |
| 7489198 |
Linear regulating switch |
Feb. 10, 2009 |
| 7482869 |
High efficiency amplification |
Jan. 27, 2009 |
| 7479833 |
Dynamic biasing amplifier apparatus, dynamic biasing apparatus and method |
Jan. 20, 2009 |
| 7474157 |
Power amplifier |
Jan. 6, 2009 |
| 7471146 |
Optimized circuits for three dimensional packaging and methods of manufacture therefore |
Dec. 30, 2008 |
| 7460843 |
Amplifier apparatus, polar modulation transmission apparatus and wireless communication apparatus |
Dec. 2, 2008 |
| 7454179 |
Radio frequency power detector and decision circuit used with DC supply voltage controlled power amplifiers |
Nov. 18, 2008 |
| 7447485 |
Device and method for controlling a voltage control signal |
Nov. 4, 2008 |
| 7420411 |
Voltage control circuit and method for supplying an electrical component with a supply voltage |
Sep. 2, 2008 |
| 7420414 |
Amplifier, and step-down regulator and operational amplifier using the amplifier |
Sep. 2, 2008 |
| 7420422 |
Audio amplifier driven by single voltage source and related voltage supply circuit |
Sep. 2, 2008 |
| 7417502 |
Selectable power supply for audio amplifier |
Aug. 26, 2008 |
| 7397303 |
Vacuum tube circuit |
Jul. 8, 2008 |
| 7395038 |
High-efficiency modulating RF amplifier |
Jul. 1, 2008 |
| 7394233 |
High efficiency modulated power supply |
Jul. 1, 2008 |
| 7392021 |
Apparatus, system, and method for measuring power delivered to a load |
Jun. 24, 2008 |
| 7373116 |
High output power radio frequency integrated circuit |
May. 13, 2008 |
| 7372918 |
Transmission device with adaptive digital predistortion, transceiver with transmission device, and method for operating a transmission device |
May. 13, 2008 |
| 7368874 |
Dynamic depressed collector |
May. 6, 2008 |
| 7369837 |
Frequency-mixing method and frequency-mixing device using the same |
May. 6, 2008 |
| 7369816 |
Highly accurate temperature sensor employing mixed-signal components |
May. 6, 2008 |
| 7336127 |
Doherty amplifier configuration for a collector controlled power amplifier |
Feb. 26, 2008 |
| 7333564 |
High frequency power amplifier circuit |
Feb. 19, 2008 |
| 7330071 |
High efficiency radio frequency power amplifier having an extended dynamic range |
Feb. 12, 2008 |
| 7315152 |
System for detecting current in an output stage of a power amplifier |
Jan. 1, 2008 |
| 7259630 |
Elimination of peak clipping and improved efficiency for RF power amplifiers with a predistorter |
Aug. 21, 2007 |
| 7239206 |
Ultracapacitor audio amplifier |
Jul. 3, 2007 |
| 7154337 |
Amplifying a signal using a control modulator that provides a bias resistance |
Dec. 26, 2006 |
| 7138861 |
Load mismatch adaptation in coupler-based amplifiers |
Nov. 21, 2006 |
| 7135930 |
Switched supply for operational amplifier |
Nov. 14, 2006 |
| 7136058 |
Display apparatus, digital-to-analog conversion circuit and digital-to-analog conversion method |
Nov. 14, 2006 |
| 7130415 |
Line Driver apparatus |
Oct. 31, 2006 |
| 7099635 |
High-efficiency modulating RF amplifier |
Aug. 29, 2006 |
| 7091772 |
Power amplification by using different fixed power supply signals for the amplifier |
Aug. 15, 2006 |
| 7091777 |
Controller for an RF power amplifier |
Aug. 15, 2006 |
| 7068109 |
Apparatus for controlling modulation of an alternating waveform on a DC voltage signal within a low-noise block controller |
Jun. 27, 2006 |
| 7053708 |
Electronic component for high frequency power amplifier and radio communication system |
May. 30, 2006 |
| 7038536 |
Power supply processing for power amplifiers |
May. 2, 2006 |
| 6998915 |
Apparatus for switching matching circuit in mobile communication terminal |
Feb. 14, 2006 |
| 6996379 |
Linear high powered integrated circuit transmitter |
Feb. 7, 2006 |
| 6978014 |
Apparatus for providing power to line drivers in a communication system |
Dec. 20, 2005 |
| 6970152 |
Stacked amplifier arrangement for graphics displays |
Nov. 29, 2005 |
| 6963460 |
Voltage regulator operable over a wide range of supply voltage |
Nov. 8, 2005 |
| 6960956 |
Apparatus and methods for monitoring and controlling power amplifier linearity using detected fundamental and harmonic components |
Nov. 1, 2005 |
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