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Class Information
Number: 375/297
Name: Pulse or digital communications > Transmitters > Antinoise or distortion (includes predistortion) > Power amplifier
Description: Subject matter including an amplifier which is used for the modulation process in the transmitter.

Patents under this class:

Patent Number Title Of Patent Date Issued
8503952 Compensation of an asymmetric frequency response of a radio Aug. 6, 2013
8498591 Digital Predistortion for nonlinear RF power amplifiers Jul. 30, 2013
8498322 Spread-spectrum pilot signals in a communications transmitter Jul. 30, 2013
8494086 Distortion and aliasing reduction for digital to analog conversion Jul. 23, 2013
8494085 Method and system for bandwidth calibration for a phase locked loop (PLL) Jul. 23, 2013
8493877 Adaptive satellite return link symbol rate determination Jul. 23, 2013
8489047 Transmitter linearized using bias deviation gain adjustment and method therefor Jul. 16, 2013
8488718 Correction of distortions in an emission chain Jul. 16, 2013
8483631 Method and apparatus for predistorting a waveform for input to an amplifier Jul. 9, 2013
8483314 Wireless apparatus and distortion compensation method used on time division duplex system Jul. 9, 2013
8478344 Power recovery circuit based on partial standing waves Jul. 2, 2013
8478210 Apparatus and method of digital predistortion for power amplifiers with dynamic nonlinearities Jul. 2, 2013
8477870 Transmitter including polar modulation circuit Jul. 2, 2013
8472897 Power amplifier predistortion methods and apparatus Jun. 25, 2013
8472896 Method and apparatus for transformer power combiner and dynamic power control for outphasing power amplifiers Jun. 25, 2013
8472557 Transmitter with quantization noise compensation Jun. 25, 2013
8472556 Amplifier device and predistortion control method Jun. 25, 2013
8472535 Multi-carrier transmitter back-off estimation Jun. 25, 2013
8467474 Monitor for spectral degradation of transmitter or receiver Jun. 18, 2013
8467473 Power control techniques for wireless transmitters Jun. 18, 2013
8466755 Polar modulation apparatus and communication device Jun. 18, 2013
8462883 Transmission apparatus and method of controlling the same Jun. 11, 2013
8462882 Measurement of transmitter I/Q impairments using shared local oscillators Jun. 11, 2013
8457567 Amplitude modulation controller for polar transmitter Jun. 4, 2013
8457259 Method and system for partitioning gain for wireless radio frequency integrated circuits Jun. 4, 2013
8457249 Method and apparatus for crest factor reduction in telecommunications systems Jun. 4, 2013
8457247 In-band generation of low-frequency periodic signaling Jun. 4, 2013
8457246 Apparatus and method for envelope tracking power amplifier in wireless communication system Jun. 4, 2013
8457243 Transmitter comprising a pulse width pulse position modulator and method thereof Jun. 4, 2013
8457192 Pulse width modulator Jun. 4, 2013
8452250 DC offset compensation method and DC offset compensation device May. 28, 2013
8451960 Transmitter gain control and calibration May. 28, 2013
8451157 Double balanced digital transmitter May. 28, 2013
8451156 Asynchronous sigma delta analog to digital converter using a time to digital converter May. 28, 2013
8447249 System and method for providing open loop transmit power control May. 21, 2013
8447246 System and method for a multi-band transmitter May. 21, 2013
8446980 Distortion compensation circuit and a distortion compensation method May. 21, 2013
8446979 Predistortion with integral crest-factor reduction and reduced observation bandwidth May. 21, 2013
8446202 Power limiting circuit May. 21, 2013
8442166 Preamble detection with unknown channel May. 14, 2013
8442142 Method and system for beamforming signal transmission under a per-antenna power constraint May. 14, 2013
8437425 Distortion compensation device, distortion compensation method and wireless apparatus May. 7, 2013
8437424 Robust transmit/feedback alignment May. 7, 2013
8437420 Multiple output discrete digital transmitter May. 7, 2013
8433261 RF communications device with inverse function for coupler therein and related methods Apr. 30, 2013
8433077 Noise removal device and noise removal method Apr. 30, 2013
8432997 Method and system of beamforming a broadband signal through a multiport network Apr. 30, 2013
8432220 Linearization device for a power amplifier Apr. 30, 2013
8428181 Method and apparatus for optimizing transmitter power efficiency Apr. 23, 2013
8428179 Apparatus and method for crest factor reduction Apr. 23, 2013

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