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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
7657238 Method and apparatus for modulating a radio signal using digital amplitude and phase control signals Feb. 2, 2010
7656975 Gain control in signal processing with feed-forward gain correction Feb. 2, 2010
7656964 Forward and reverse VSWR insensitive power detection using phase shifting and harmonic filtering Feb. 2, 2010
7653147 Transmitter control Jan. 26, 2010
7649961 Suppressed carrier quadrature pulse modulator Jan. 19, 2010
7646238 Amplification apparatus Jan. 12, 2010
7643801 Clipping of transmission signal Jan. 5, 2010
7643759 Signal-quality evaluation device, signal adjustment method, optical-signal evaluation system, and optical transmission system Jan. 5, 2010
7643573 Power management in a data acquisition system Jan. 5, 2010
7639992 Digital compensation for nonlinearities in a phase-locked loop of a polar transmitter Dec. 29, 2009
7639077 Method and apparatus for pre-conditioning an electrical signal Dec. 29, 2009
7634024 Adaptive peak windowing for crest factor reduction in a communication system transmitter Dec. 15, 2009
7634022 Polar modulator and wireless communication apparatus using the same Dec. 15, 2009
7627293 Strategic predistortion function selection Dec. 1, 2009
7626455 Distortion compensation apparatus Dec. 1, 2009
7613251 Distortion compensating apparatus and method Nov. 3, 2009
7613250 Distortion compensation apparatus Nov. 3, 2009
7613248 Signal processing with channel eigenmode decomposition and channel inversion for MIMO systems Nov. 3, 2009
7613232 Method for automatic control of RF output level of a repeater Nov. 3, 2009
7609781 Wireless communication device with self calibration feature for controlling power output Oct. 27, 2009
7609780 Method and apparatus for performing sequential closed loop multiple input multiple output (MIMO) Oct. 27, 2009
7606539 Adaptive predistorter coupled to a nonlinear element Oct. 20, 2009
7606324 Digital pre-distortion technique using non-linear filters Oct. 20, 2009
7606322 Digital pre-distortion technique using nonlinear filters Oct. 20, 2009
7599418 Method and apparatus for a frequency hopper Oct. 6, 2009
7596185 Radio transmitter with variable amplifier units in the baseband section and in the radio-frequency section of the transmission path Sep. 29, 2009
7593484 Radio frequency (RF) receiver with double loop integrated fast response automatic gain control (AGC) Sep. 22, 2009
7593481 CDMA, W-CDMA, 3.sup.rd generation interoperable modem format selectable (MFS) systems with GMSK modulated systems Sep. 22, 2009
7593480 Transmission device and radio communication device Sep. 22, 2009
7593478 Low peak to average ratio search algorithm Sep. 22, 2009
7593477 Training sequence for linearizing an RF amplifier Sep. 22, 2009
7590190 System and method for forward path gain control in a digital predistortion linearized transmitter Sep. 15, 2009
7586996 Method for controlling the power of the output signal from an amplifier system and the associated system Sep. 8, 2009
7586995 Peak windowing for crest factor reduction Sep. 8, 2009
7583754 Method and system for broadband predistortion linearization Sep. 1, 2009
7580476 Communication system and method for improving efficiency and linearity Aug. 25, 2009
7570711 Quadrature LINC transmission method and apparatus Aug. 4, 2009
7570710 In-phase and quadrature-phase signal amplitude and phase calibration Aug. 4, 2009
7570709 Automatic transmit power control loop with modulation averaging Aug. 4, 2009
7570689 Advanced receiver with sliding window block linear equalizer Aug. 4, 2009
7570187 Technique for improving modulation performance of translational loop RF transmitters Aug. 4, 2009
7567625 Apparatus and method for sub-carrier allocation in a multiple-input and multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) communication system Jul. 28, 2009
7565119 Predistortion correction loop-back based on high linearity and low linearity modes Jul. 21, 2009
7565118 Polar modulation transmission apparatus and wireless communication apparatus Jul. 21, 2009
7564922 RF transmitter for efficiently compensating output power variation due to temperature and process Jul. 21, 2009
7564305 System and method for self-cancellation of N.sup.th-order intermodulation products Jul. 21, 2009
7561636 Digital predistortion apparatus and method in power amplifier Jul. 14, 2009
7561629 Multicarrier receiver and transmitter with delay correcting function Jul. 14, 2009
7558334 Enhanced hybrid class-S modulator Jul. 7, 2009
7558333 Distortion tolerant linear phase modulations Jul. 7, 2009

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