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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
7454179 Radio frequency power detector and decision circuit used with DC supply voltage controlled power amplifiers Nov. 18, 2008
7454178 Low-loss transmitter module Nov. 18, 2008
7453952 Predistortion circuit for a transmit system Nov. 18, 2008
7453945 Methods and devices for controlling RF, multi-carrier amplifier signal power Nov. 18, 2008
7449946 High voltage, high current, and high accuracy amplifier Nov. 11, 2008
7447485 Device and method for controlling a voltage control signal Nov. 4, 2008
7440514 Control of data transmission voltage level using clipping in a low-voltage network Oct. 21, 2008
7440496 Apparatus and method to extend communication range Oct. 21, 2008
7440488 TDMA, spread spectrum RF agile filtered signal transmission Oct. 21, 2008
7439895 Linear amplifier using digital feedforward Oct. 21, 2008
7436916 Pulse modulator and PPM demodulation determining circuit employed in ultra wideband wireless communications Oct. 14, 2008
7436900 Intermodulation distortion identification and quantization circuit for a linear amplifier system Oct. 14, 2008
7433422 Method for generating a signal with a definable pulse shape Oct. 7, 2008
7430249 Carrier state judging device and transmitting device Sep. 30, 2008
7428230 Time-division-duplexing type power amplification module Sep. 23, 2008
7426372 Piecewise linearizer circuit for radio frequency amplification Sep. 16, 2008
7424064 Polar transmitter with digital to RF converter Sep. 9, 2008
7423958 Transmitter for transmitting signals over radio channels and method for transmitting signals over radio channels Sep. 9, 2008
7421037 Reconfigurable transmitter with direct digital to RF modulator Sep. 2, 2008
7420416 Tunable predistorter Sep. 2, 2008
7418058 Distortion compensating apparatus and method Aug. 26, 2008
7415254 Power control circuit, semiconductor device and transceiver circuit using the same Aug. 19, 2008
7415250 Distortion compensating amplifier Aug. 19, 2008
7415066 Mis-matched modulation-demodulation format selectable filters Aug. 19, 2008
7409010 Method and system for transmitting signals with reduced spurious emissions Aug. 5, 2008
7405680 Distortion compensator Jul. 29, 2008
7403573 Uncorrelated adaptive predistorter Jul. 22, 2008
7400864 Method and apparatus for compensating for phase variations caused by activation of an amplifier Jul. 15, 2008
7400691 Power control on a packet-by-packet basis in a CMOS transceiver Jul. 15, 2008
7400690 Adaptive phase controller, method of controlling a phase and transmitter employing the same Jul. 15, 2008
7395039 Transmitter Jul. 1, 2008
7395038 High-efficiency modulating RF amplifier Jul. 1, 2008
7392020 Table reference type predistorter Jun. 24, 2008
7391822 Method and apparatus for estimating a sample delay between a transmission signal and a feedback signal in a mobile communication system, and a base station transmitter using the same Jun. 24, 2008
7388929 Method and apparatus for providing service availability information in a wireless communication system Jun. 17, 2008
7386060 Method of reducing a peak-to-average power ratio Jun. 10, 2008
7383028 Timing adjustment method for wireless communication apparatus Jun. 3, 2008
7382835 Power booster using peak suppression and pre-distortion for terminal radios Jun. 3, 2008
7379715 Transmitter apparatus and method using polar modulation with signal timing adjustment May. 27, 2008
7376205 Device and method for compensation of transmission line distortion May. 20, 2008
7376180 Adaptive receivers for bit rate agile (BRA) and modulation demodulation (modem) format selectable (MFS) signals May. 20, 2008
7373118 Method and system for facilitating transmission of analog signals to a wireless terminal May. 13, 2008
7369820 System and method for DC offset correction in transmit baseband May. 6, 2008
7369580 Amplitude limiting circuit and CDMA communication apparatus May. 6, 2008
7366482 Transmission device, transmission output control method, and radio communications device Apr. 29, 2008
7362821 Method and apparatus for amplifier linearization using adaptive predistortion Apr. 22, 2008
7362820 Apparatus and method for modulating and digitally predistorting a signal in a multiple modulation schemes Apr. 22, 2008
7362819 Device and method for reducing peaks of a composite signal Apr. 22, 2008
7362818 Amplitude and phase comparator for microwave power amplifier Apr. 22, 2008
7359680 Delay calibration in polar modulation transmitters Apr. 15, 2008

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