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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:
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Patent Number Title Of Patent Date Issued
7751783 Power amplifier protection circuit and associated methods Jul. 6, 2010
7751496 Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture Jul. 6, 2010
7751488 System and method for communicating data using symbol-based randomized orthogonal frequency division multiplexing (OFDM) Jul. 6, 2010
7747224 Method and apparatus for adaptively controlling signals Jun. 29, 2010
7742543 Transmission circuit by polar modulation system and communication apparatus using the same Jun. 22, 2010
7742541 Transmission circuit, and communication apparatus using the same Jun. 22, 2010
7742539 Adaptation of IQ-error compensation Jun. 22, 2010
7738594 Method to maintain RF power amplifier linearity in varying load VSWR conditions without isolator Jun. 15, 2010
7738590 Radio communication apparatus capable of switching modulation schemes Jun. 15, 2010
7738420 Apparatus and method for allocating subchannel and power in communication system, and transmitting apparatus Jun. 15, 2010
7734263 Transmission circuit and communication device Jun. 8, 2010
7733993 Phase noise canceling OFDM receiver Jun. 8, 2010
7733979 Average power control of wireless transmission having a variable duty cycle Jun. 8, 2010
7733978 Apparatus and method of dynamically adapting the LUT spacing for linearizing a power amplifier Jun. 8, 2010
7733976 Computational circuits and methods for processing modulated signals having non-constant envelopes Jun. 8, 2010
7733177 Method and system for calculating the pre-inverse of a nonlinear system Jun. 8, 2010
7729446 System and method for digitally correcting a non-linear element using a multiply partitioned architecture for predistortion Jun. 1, 2010
7729445 Digital outphasing transmitter architecture Jun. 1, 2010
7728665 Distortion compensation apparatus and method Jun. 1, 2010
7725088 Fast mode switching frequency synthesizing apparatus and method for operating in low power consumption May. 25, 2010
7724840 RF transmitter with predistortion and method therefor May. 25, 2010
7720175 Apparatus and method for reducing peak-to-average power ratio in an OFDM communication system May. 18, 2010
7720129 Frequency-hopping carrier generator May. 18, 2010
7719377 Alternating digital RF modulation May. 18, 2010
7715810 System and method for combining stepped drain bias control with digital predistortion for a power amplifier May. 11, 2010
7715490 Spectral emission shaping sigma delta modulator for wireless applications May. 11, 2010
7711070 Method and apparatus for control of transmitter power consumption May. 4, 2010
7710301 Digital/analog converter and transmitter for complex signals May. 4, 2010
7706467 Transmitter with an envelope tracking power amplifier utilizing digital predistortion of the signal envelope Apr. 27, 2010
7702301 Method and apparatus for distortion correction of RF amplifiers Apr. 20, 2010
7697901 Digital variable gain mixer Apr. 13, 2010
7697617 Synchronisation method and apparatus for OFDM symbols Apr. 13, 2010
7693494 High dynamic range pre-power amplifier incorporating digital attenuator Apr. 6, 2010
7693208 Method and circuit for limiting the power of a signal compiled from spread-coded signals Apr. 6, 2010
7688138 Electronic device having a predistortion filter and related methods Mar. 30, 2010
7684514 Transmitter apparatus and wireless communication apparatus Mar. 23, 2010
7684513 Amplifier circuit and amplifying method Mar. 23, 2010
7683713 Predistorter Mar. 23, 2010
7680467 Distortion compensating amplifier Mar. 16, 2010
7680210 Method for generating I/Q signal in a TDMA transmitter and corresponding modulator Mar. 16, 2010
7680209 Method and device for training an RF amplifier linearization device, and mobile terminal incorporating same Mar. 16, 2010
7679439 Predistorter Mar. 16, 2010
7672397 Method for producing a transmission signal Mar. 2, 2010
7672396 Reducing image spectral leakage due to I-Q imbalance Mar. 2, 2010
7672395 Digital predistorter and predistortion method therefor Mar. 2, 2010
7671691 Quadrature modulator with phase controller apparatus and error detector Mar. 2, 2010
7668254 Real time dynamic correlator for evaluating electrical characteristics of a transmitter Feb. 23, 2010
7664202 Transmission device and wireless communication apparatus Feb. 16, 2010
7664201 Digital automatic gain control Feb. 16, 2010
7664161 Pulse generator and the transmitter with a pulse generator Feb. 16, 2010

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