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Class Information
Number: 330/149
Name: Amplifiers > Hum or noise or distortion bucking introduced into signal channel
Description: Subject matter wherein the signal has a hum or noise component inadvertently introduced therein, as where there is ineffective filtering of a rectified A.C. power supply or bias, and wherein such objectional component is removed or reduced by the same hum or noise component introduced into the signal path of the amplifier in such manner as to oppose the objectional signal component, thereby removing it from, or reducing it in, the output signal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7170344 |
Multi-band predistorter using power series representation |
Jan. 30, 2007 |
| 7170343 |
Fast LUT predistorter for power amplifier |
Jan. 30, 2007 |
| 7170342 |
Linear power amplification method and linear power amplifier |
Jan. 30, 2007 |
| 7161990 |
Predistortion amplifier |
Jan. 9, 2007 |
| 7157971 |
Low-distortion differential circuit |
Jan. 2, 2007 |
| 7157967 |
System and method for control of loop alignment in adaptive feed forward amplifiers |
Jan. 2, 2007 |
| 7151913 |
Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture |
Dec. 19, 2006 |
| 7151405 |
Estimating power amplifier non-linearity in accordance with memory depth |
Dec. 19, 2006 |
| 7149484 |
Portable communication device having adjustable amplification and method therefor |
Dec. 12, 2006 |
| 7146138 |
Power boosting technique for wireless multi-carrier power amplifier |
Dec. 5, 2006 |
| 7142054 |
Amplifying signals using a quadrature coupled amplifier |
Nov. 28, 2006 |
| 7136628 |
Adaptive digital predistortion method and apparatus for wireless transmitter |
Nov. 14, 2006 |
| 7130595 |
Transmitter power amplifier ramping method |
Oct. 31, 2006 |
| 7129778 |
Digital cross cancellation system |
Oct. 31, 2006 |
| 7129777 |
Digital feedback linearizing apparatus to linearize power amplifier and method used by the apparatus |
Oct. 31, 2006 |
| 7126422 |
Multi-band feed-forward amplifier and adjustment method therefor |
Oct. 24, 2006 |
| 7123086 |
Feed forward amplifier employing positive feedback pilot generation |
Oct. 17, 2006 |
| 7116167 |
Predistortion linearizer and method thereof |
Oct. 3, 2006 |
| 7113606 |
Adjustable harmonic distortion detector and method for using the same |
Sep. 26, 2006 |
| 7113037 |
Performing remote power amplifier linearization |
Sep. 26, 2006 |
| 7113036 |
Method and apparatus for adaptive digital predistortion using nonlinear and feedback gain parameters |
Sep. 26, 2006 |
| 7113035 |
Electronic circuit |
Sep. 26, 2006 |
| 7110718 |
Phase distortion using MOS nonlinear capacitance |
Sep. 19, 2006 |
| 7109792 |
Table-based pre-distortion for amplifier systems |
Sep. 19, 2006 |
| 7106133 |
Distortion compensator |
Sep. 12, 2006 |
| 7102430 |
Efficient method and means for integration of power control and predistortion in a transmitter |
Sep. 5, 2006 |
| 7098734 |
Distortion-compensated amplifier using predistortion technique |
Aug. 29, 2006 |
| 7095277 |
Method and arrangement for a power amplifier |
Aug. 22, 2006 |
| 7095278 |
Power amplifier arrangement and method for memory correction/linearization |
Aug. 22, 2006 |
| 7095988 |
Apparatus for linear transmitter with improved loop gain stabilization |
Aug. 22, 2006 |
| 7091777 |
Controller for an RF power amplifier |
Aug. 15, 2006 |
| 7091779 |
Non-linear modeling method |
Aug. 15, 2006 |
| 7091780 |
Method and apparatus for operating a transmission amplifier |
Aug. 15, 2006 |
| 7091781 |
Wideband feed forward linear power amplifier |
Aug. 15, 2006 |
| 7091782 |
Radio apparatus comprising an amplifier for radio-frequency signals, amplifier for radio-frequency signals and method for amplifying such signals |
Aug. 15, 2006 |
| 7092833 |
Method and circuit for linearizing nonlinear curves |
Aug. 15, 2006 |
| 7088176 |
Method and arrangement relating to multicarrier power amplifiers |
Aug. 8, 2006 |
| 7088980 |
Frequency converter with nonlinear distortion cancellation |
Aug. 8, 2006 |
| 7084703 |
Self-calibrated power amplifier linearizers |
Aug. 1, 2006 |
| 7081795 |
Predistortion circuit, low-distortion power amplifier, and control methods therefor |
Jul. 25, 2006 |
| 7079819 |
RF transmitters with saturation detection and correction and methods therefor |
Jul. 18, 2006 |
| 7075366 |
Methods and systems for stabilizing an amplifier |
Jul. 11, 2006 |
| 7071777 |
Digital memory-based predistortion technique |
Jul. 4, 2006 |
| 7072617 |
System and method for suppression of RFI interference |
Jul. 4, 2006 |
| 7068101 |
Adaptive predistortion for a transmit system |
Jun. 27, 2006 |
| 7068102 |
Power amplifying apparatus and method using pre-distortion and radio communication system including the same apparatus |
Jun. 27, 2006 |
| 7064608 |
Feed-forward-back suppressed noise circuits |
Jun. 20, 2006 |
| 7061317 |
Even order distortion elimination in push-pull or differential amplifiers and circuits |
Jun. 13, 2006 |
| 7062234 |
Pre-distortion cross-cancellation for linearizing power amplifiers |
Jun. 13, 2006 |
| 7057455 |
System and method for reducing dynamic range and improving linearity in an amplication system |
Jun. 6, 2006 |
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