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Browse by Category: Main > Communications
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:
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Patent Number Title Of Patent Date Issued
7558313 Cross-correlated TDMA, spread spectrum, CDMA and OFDM systems Jul. 7, 2009
7555272 Transmission arrangement for transmitting data continuously in the time domain Jun. 30, 2009
7555268 RF transmitter having multiple constant transmit power levels Jun. 30, 2009
7555059 Low power distributed transmitter Jun. 30, 2009
7555057 Predistortion calibration in a transceiver assembly Jun. 30, 2009
7551905 Distortion compensation apparatus Jun. 23, 2009
7551689 Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios Jun. 23, 2009
7551688 Waveforms for envelope tracking transmitter Jun. 23, 2009
7551687 Distortion compensating apparatus Jun. 23, 2009
7548133 Modulation of an RF transmit signal Jun. 16, 2009
7545883 Diversity wireless systems Jun. 9, 2009
7545881 Method and apparatus for controlling spurious transmissions in a communications system Jun. 9, 2009
7545880 Multiple polynomial digital predistortion Jun. 9, 2009
7542741 System and method for power mapping to compensate for power amplifier gain control variations Jun. 2, 2009
7542733 Method and apparatus for diversity transmission from a mobile station Jun. 2, 2009
7542519 Radio frequency transmitter and method therefor Jun. 2, 2009
7542518 Predistortion apparatus and method for compensating for a nonlinear distortion characteristic of a power amplifier using a look-up table Jun. 2, 2009
7539269 Method and apparatus for discrete power synthesis of multicarrier signals with constant envelope power amplifiers May. 26, 2009
7535974 Method and apparatus for amplifier linearization using adaptive predistortion May. 19, 2009
7535973 Correction method and correction loop for a complex digital signal May. 19, 2009
7532680 Multi-mode radio frequency transmitter May. 12, 2009
7529524 Adaptive power amplifier linearization in time division duplex communication systems May. 5, 2009
7529316 Transmitter May. 5, 2009
7522671 Apparatus and method for transmitting and receiving high-speed differential current data between circuit devices Apr. 21, 2009
7515652 Digital modulator for a GSM/GPRS/EDGE wireless polar RF transmitter Apr. 7, 2009
7515648 Transmitter and wireless communication apparatus using same Apr. 7, 2009
7515646 Method and apparatus for reducing EMI emissions for data signals traveling over a data pathway Apr. 7, 2009
7512387 Method and control system for controlling the output power of an RF amplifier system Mar. 31, 2009
7511574 Predistorter Mar. 31, 2009
7509109 Adaptive correction of a received signal frequency response tilt Mar. 24, 2009
7508897 PLL circuit and high-frequency receiving device Mar. 24, 2009
7505530 Pre-distortion using a by-pass signal Mar. 17, 2009
7499502 Amplifier, information communication apparatus and amplification method Mar. 3, 2009
7499501 Symbol error based compensation methods for nonlinear amplifier distortion Mar. 3, 2009
7496145 Method and apparatus for reducing transmitter peak power requirements with orthogonal code noise shaping Feb. 24, 2009
7489910 Wireless transmitter and amplifier Feb. 10, 2009
7486939 Apparatus for removing distortions created by an amplifier Feb. 3, 2009
7483492 GMSK and OFDM nonlinearly and linearly amplified cellular and wireless networks Jan. 27, 2009
7480345 Semiconductor integrated circuit for communication, radio-communication apparatus, and transmission starting method Jan. 20, 2009
7480344 Architectural techniques for envelope and phase signal alignment in RF polar transmitters using power amplifier feedback Jan. 20, 2009
7477701 Real time dynamic correlator Jan. 13, 2009
7471935 Automatic level control Dec. 30, 2008
7471739 Advanced adaptive pre-distortion in a radio frequency transmitter Dec. 30, 2008
7471738 Method and apparatus for optimizing transmitter power efficiency Dec. 30, 2008
7471736 Frequency based modulator compensation Dec. 30, 2008
7469020 Systems, methods, and apparatus for reducing dynamic range requirements of a power amplifier in a wireless device Dec. 23, 2008
7463869 Low noise high isolation transmit buffer gain control mechanism Dec. 9, 2008
7463697 Multicarrier transmitter and methods for generating multicarrier communication signals with power amplifier predistortion and linearization Dec. 9, 2008
7460843 Amplifier apparatus, polar modulation transmission apparatus and wireless communication apparatus Dec. 2, 2008
7457371 Transmission signal generating circuit and radio base station communication apparatus using the same Nov. 25, 2008

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