Amplifiers operating in envelope tracking mode or non-envelope tracking mode

Optimization methods for amplifier with variable supply power

Method for implementing compensation filter and apparatus for signal bandwidth compensation

Time alignment for an amplification stage

RF transmitter, integrated circuit device, wireless communication unit and method therefor

Low-noise TIA-to-ADC interface with a wide-range of passive gain control

Method and system for aligning signals widely spaced in frequency for wideband digital predistortion in wireless communication systems

Quadrature hybrid coupler, amplifier, and wireless communication device

Distortion compensation device and distortion compensation method

Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer

Vector processor having instruction set with vector convolution function for fir filtering

Method and apparatus for predicting signal characteristics for a nonlinear power amplifier

Rugged IQ receiver based RF gain measurements

Reducing effects of RF mixer-based artifact using pre-distortion of an envelope power supply signal

Transmitter and signal processing method

Maximum likelihood bit-stream generation and detection using M-algorithm and infinite impulse response filtering

Software digital front end (SoftDFE) signal processing

High efficiency and high linearity adaptive power amplifier for signals with high PAPR

Digital processor having instruction set with complex exponential non-linear function

Direct digital synthesis of signals using maximum likelihood bit-stream encoding

Mobile device including a power amplifier with selectable voltage supply

Calibration for power amplifier predistortion

Signal transmitting device and signal transmitting method

Distortion compensation circuit, and transmission device using distortion compensation circuit and high-frequency power amplifier

DC-coupled peak detector

Method and system for compensating for distortion in a transmitter by utilizing a digital predistortion scheme with a feedback mixer configuration

Systems, and methods of RF power transmission, modulation, and amplification, including embodiments for output stage protection

Method for compensating signal distortions in composite amplifiers

RF transmitter and method of operation

Method and system for baseband predistortion linearization in multi-channel wideband communications systems

Linearizing a power amplifier

Snubber for a direct current (DC)-DC converter

Optical signal processing device and optical signal processing method

Dual inductive element charge pump buck and buck power supplies

Amplifying device

Amplifier circuit and wireless communication equipment

Daisy-chained ring of remote units for a distributed antenna system

Multiband RF switch ground isolation

Direct current (DC)-DC converter having a multi-stage output filter

Transmitter linearized in response to derivative signal and method therefor

Transmission apparatus and transmission method

Amplifier bandwidth extension for high-speed tranceivers

Transmitter linearized using look-up table with unadaptable data and method therefor

High efficiency path based power amplifier circuitry

MOBILE WIRELESS COMMUNICATIONS DEVICE WITH SELECTIVE POWER AMPLIFIER CONTROL AND RELATED METHODS

Signal processing apparatus and amplification apparatus

Multiple functional equivalence digital communications interface

Apparatus for compensating for distortion of transmitter array in radio communication system and method for controlling the same

Power amplifier

Method and system for a linearized transmitter including a power amplifier

Voltage multiplier charge pump buck

Predistortion circuit, wireless communication unit and method for coefficient estimation

Transmitter and method for controlling same

Method for predistorting signals for non-linear components in the presence of long term memory effects

Reception signal processing device

Interference reduction between RF communications bands

RF power transmission, modulation, and amplification, including direct cartesian 2-branch embodiments

Combined RF equalizer and I/Q imbalance correction

Multi-stage crest factor reduction (CFR) for multi-channel multi-standard radio

DEVICE AND METHOD FOR PRE-DISTORTING AND AMPLIFYING A SIGNAL BASED ON AN ERROR ATTRIBUTE

Amplifying device

Linearization of broadband power amplifiers

Radio-frequency transmitter, such as for broadcasting and cellular base stations

Apparatus and method for operating a transmitter

SEMICONDUCTOR DEVICE FOR SIGNAL AMPLIFICATION

Cascaded converged power amplifier

Systems and methods of RF power transmission, modulation, and amplification, including embodiments for error correction

Multi-Dimensional Error Definition, Error Measurement, Error Analysis, Error Function Generation, Error Information Optimization, and Error Correction for Communications Systems

Systems and methods of RF power transmission, modulation, and amplification

Multi-band peak power reduction

Method and system for minimizing power consumption in a communication system

Multi-dimensional volterra series transmitter linearization

Amplifier bandwidth extension for high-speed tranceivers

Digital pre-distortion processing method and apparatus

High output power digital TX

Controlling a transmit path based on monitored error vector magnitude (EVM) performance

Multi-standard wireless transmitter

Independent PA biasing of a driver stage and a final stage

Dynamic digital pre-distortion system

PA bias power supply undershoot compensation

Selecting PA bias levels of RF PA circuitry during a multislot burst

Efficiency improvement of doherty power amplifier using supply switching and digitally controlled gate bias modulation of peaking amplifier

PA envelope power supply undershoot compensation

Selecting a converter operating mode of a PA envelope power supply

Temperature correcting an envelope power supply signal for RF PA circuitry

Distortion compensation device and distortion compensating method

Apparatus and methods for biasing power amplifiers

Pre-distortion architecture for compensating non-linear effects

Linearization in the presence of phase variations

RF PA linearity requirements based converter operating mode selection

Digital output power measurement in radio communication systems

FLIP-CHIP POWER AMPLIFIER AND IMPEDANCE MATCHING NETWORK

Embedded RF PA temperature compensating bias transistor

Feedback based buck timing of a direct current (DC)-DC converter

DC-DC converter semiconductor die structure

RF transmitter architecture, integrated circuit device, wireless communication unit and method therefor

Apparatus and methods for envelope tracking

Amplifying device and signal processing device

Frequency selective IQ correction

Transmitter and communication apparatus

Envelope path processing for envelope tracking amplification stage

Power amplification based on phase angle controlled reference signal and amplitude control signal

Transmitter and communication device

Quadrature communications device with I antennas and Q antennas and related methods

Reduced power-consumption transmitters

Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a quadrature feedback mixer configuration

Charge pump based power amplifier envelope power supply and bias power supply

Baseband-derived RF digital predistortion

Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer

High-frequency power amplifier

Overlay class F choke

Power amplification device, transmitter, and power amplification control method

Composite power amplifier, transmitter, and composite-power-amplifier control method

Look-up table based configuration of multi-mode multi-band radio frequency power amplifier circuitry

Linear mode and non-linear mode quadrature PA circuitry

Transmitter and power supply control module

Frequency correction of a programmable frequency oscillator by propagation delay compensation

Fast envelope system calibration

Combined RF detector and RF attenuator with concurrent outputs

Auto configurable 2/3 wire serial interface

Transmitter apparatus

Sampling circuit, communication device, distortion correction circuit, signal sampling method, and program

PA bias power supply efficiency optimization

Signal processing device and method, radiofrequency transmission system including such a device

Method and system for baseband predistortion linearization in multi-channel wideband communication systems

Wireless communication apparatus

Transmission circuit, communication apparatus, and transmission method

MODULE FOR MODULATION AND AMPLIFICATION

Transmission circuit

Transmitter linearized in response to signal magnitude derivative parameter and method therefor

Transmitter including polar modulation circuit

Transmission circuit and communication device

Quadrature power amplifier architecture

Method and system for minimizing power consumption in a communication system

Control modules

Multi-band power amplifier digital predistortion system and method

Quad LINC transmitter with switchable Chireix amplifiers

Method and apparatus for compensating code channel power in a transmitter

Transmission apparatus and distortion compensation method

Method and system for enhancing efficiency by modulating power amplifier gain

Voltage compatible charge pump buck and buck power supplies

Transmitting a signal from a power amplifier

Split current current digital-to-analog converter (IDAC) for dynamic device switching (DDS) of an RF PA stage

High performance transmitter preamplification chain with calibration feedback

Digital RF transmitter optimized for linear quantized IQ up conversion

Dynamic device switching (DDS) of an in-phase RF PA stage and a quadrature-phase RF PA stage

Daisy-chained ring of remote units for a distributed antenna system

Systems and Methods of RF Power Transmission, Modulation, and Amplification, Including Embodiments for Compensating for Waveform Distortion

Transmission apparatus, radio communication apparatus, and transmission method

Predistortion of complex modulated waveform

Method for amplifying a signal by a power amplifier, power amplifier system, device, computer program product, and digital storage medium thereof

Power amplification apparatus, OFDM modulation apparatus, wireless transmission apparatus, and distortion reduction method for power amplification apparatus

Distortion compensation amplifier

Method and system for polar modulation with discontinuous phase for RF transmitters with integrated amplitude shaping

Dynamic digital pre-distortion system

Decomposer and amplifier

Feedforward controlled envelope modulator and feedforward control circuit thereof

Distortion compensation circuit, transmitting apparatus and distortion compensating method

Distortion compensation circuit

Voltage generator, control circuit, vector sum phase shifter, and optical transceiver

Power amplifier linearization using cancellation-based feed forward methods and systems

Parallel forward path cartesian feedback loop and loop filter with switchable order for cartesian feedback loops

Power limiting circuit

Adder, and power combiner, quadrature modulator, quadrature demodulator, power amplifier, transmitter and wireless communicator using same

Communication device and power correction method

Method and amplifier for cancelling magnetic coupling

Radio frequency transmitter having an amplifier with power supply modulation

Signal compensation device and communication apparatus

Multiple envelope tracking system for an active antenna array

Active antenna array with modulator-based pre-distortion

SYSTEM AND METHOD FOR UWB TRANSMISSION PREDISTORTION AND RF WIRE-BOND INTERFACE TECHNIQUE RELATED APPLICATION

Method and apparatus for compensating code channel power in a transmitter

Single envelope tracking system for an active antenna array

Dynamic range improvements of load modulated amplifiers

Linearized transmitter including a power amplifier

Power amplification device, and transmission device and communication device using same

Systems and methods providing multi-path low noise amplifiers with seamless switching

Current canceling variable gain amplifier and transmitter using same

TRANSMISSION APPARATUS AND ADJUSTMENT VALUE MEASUREMENT METHOD

Digital affine transformation modulated power amplifier for wireless communications

Adaptive digital post distortion reduction

High efficiency linear amplifier

Systems and methods of power amplifier digital pre-distortion

Distortion compensation circuit and a distortion compensation method

Predistortion of amplifier input signals

Transmitter utilizing a duty cycle envelope reduction and restoration modulator

RF TRANSMITTER AND METHOD OF OPERATION

Apparatus and method for reducing third-order intermodulation distortion

Reducing the distortion of applied modulation

Phase correction apparatus and phase correction method

Phase corrector and phase correction method

Frequency offset Cartesian feedback system

Outphasing amplification of digital modulated signals in a radiofrequency transmission system

Distortion compensation apparatus and method for detecting failure in the same

Distortion compensation device

ADAPTIVE DIGITAL PREDISTORTION OF COMPLEX MODULATED WAVEFORM USING LOCALIZED PEAK FEEDBACK FROM THE OUTPUT OF A POWER AMPLIFIER

Power amplifier and radio wave transmitter having the same

Transmission apparatus

Adaptive radio transceiver with an antenna matching circuit

Radio system and a method for relaying radio signals

Front end and high frequency receiver having quadrature low noise amplifier

Power amplifying circuit, and transmitter and wireless communication device using the same

Method and system for enhancing efficiency by modulating power amplifier gain

High efficiency linear power amplifiers with load compensation

Phase correcting apparatus and distortion compensating apparatus for radio transmitter

Semiconductor device for signal amplification

PHASE MISMATCH COMPENSATION DEVICE

WIRELESS TRANSMISSION DEVICE AND WIRELESS TRANSMISSION METHOD

POLAR MODULATION TRANSMITTER AND POLAR MODULATION TRANSMISSION METHOD

Transceiver amplifier and delay deviation compensation method

Radio station and active antenna array

Method and system for a highly efficient power amplifier utilizing dynamic baising and predistortion

Distortion compensator, distortion compensation method, and transmitter

Scalable cost function generator and method thereof

Distortion correction device and method for power amplifier

Control modules

Switched modulation of a radio-frequency amplifier

Multi-dimensional Volterra series transmitter linearization

Phase calibration for multiple transmitter systems

ADAPTIVE COMBINER ERROR CALIBRATION ALGORITHMS IN ALL-DIGITAL OUTPHASING TRANSMITTER

Current canceling variable gain amplifier and transmitter using same

High linearity low noise receiver with load switching

Multi-mode configurable transmitter circuit

Pulse width modulator

Signal amplification

Amplifier with gain expansion stage

Noise-shaped blocker-reject amplifier

Distortion compensating apparatus, wireless communicating apparatus, and distortion compensating method

Distortion compensation amplification device and correction method

Apparatus and method for bias modulator using zero current switching

Measuring load impedance of an amplifier driving a variable load

Distortion compensator apparatus, amplifier apparatus, transmitter, and method of compensating distortion

Predistorter

Apparatus and method for amplifying signal power in a communication system

Method for compensating signal distortions in composite amplifiers

Predistorter

Method and apparatus for direct digital to radio frequency conversion

Baseband-derived RF digital predistortion

RF power amplifier controlled by estimated distortion level of output signal of power amplifier

RADIO TRANSMISSION APPARATUS

Power amplifier predistortion methods and apparatus using envelope and phase detector

Systems and methods of RF power transmission, modulation and amplification

Method and system for compensation of DC offset in an RF receiver

Mobile transmitter and transmitting method thereof

Signal amplifier structure for radio transmitter

Apparatus and method for adaptive cartesian transmitter linearization and wireless transmitter employing the same

Method and system for a highly efficient power amplifier utilizing dynamic biasing and predistortion

System and method for amplifier gain measurement and compensation

Low power distributed transmitter

Balanced amplifier with protection circuit

Buffer circuit for reducing differential-mode phase noise and quadrature phase error

Methods and apparatus for reducing peak-to-RMS amplitude ratio in communication signals

Adaptive radio transceiver with filtering

Method and apparatus for a cartesian error feedback circuit to correct distortion within a power amplifier

Linear RF amplifier with polar feedback

Dynamic digital pre-distortion system

RF transmitter with compensation of differential path delay

Tunable RF bandpass transconductance amplifier

Distortion compensation apparatus

Adaptive radio transceiver with floating mosfet capacitors

Adaptive radio transceiver with an antenna matching circuit

Method of adjusting the resonance frequency of an L-C resonant circuit and resonant circuit

Wireless communication unit, linearised transmitter circuit and method of linearising therein

Method and system for baseband predistortion linearization in multi-channel wideband communication systems

Transmission device

RF transmitter with predistortion and method therefor

METHOD AND SYSTEM FOR ESTIMATING AND COMPENSATING NON-LINEAR DISTORTION IN A TRANSMITTER USING DATA SIGNAL FEEDBACK

Method and system for a linearized transmitter including a power amplifier

Method and system for enhancing efficiency by modulating power amplifier gain

Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a single feedback mixer

Method and system for compensating for estimated distortion in a transmitter by utilizing a digital predistortion scheme with a quadrature feedback mixer configuration

Method and system for a highly efficient power amplifier utilizing dynamic biasing and predistortion

Multi-dimensional error definition, error measurement, error analysis, error function generation, error information optimization, and error correction for communications systems

Hybrid Doherty Amplifier System and Method

Buffer for driving capacitive load

Method and apparatus for compensating code channel power in a transmitter

Method and system for minimizing power consumption in a communication system

Transmission power amplifier apparatus for combining power-amplified constant amplitude signals each having controlled constant amplitude value and phase

Methods and apparatus for conditioning low-magnitude events in communications signals

System and method for linearizing a CMOS differential pair

Transmitter power amplifier working at different power supplies

Distortion compensator and wireless communication device

Tuneable filter control method and base station

Power supply apparatus, amplifier apparatus, radio apparatus and reproducing apparatus

Passive amplification of signals

Predistorter

Systems, methods, and apparatuses for multi-path orthogonal recursive predistortion

Distortion compensating apparatus

Adaptive radio transceiver with filtering

RF transmitter with variably biased RF power amplifier and method therefor

Distortion compensating apparatus and method

Controller for a radio-frequency amplifier

Distortion compensating apparatus and method

Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion

Systems and methods of RF power transmission, modulation, and amplification, including embodiments for compensating for waveform distortion

Systems and methods of RF power transmission, modulation and amplification, including embodiments for compensating for waveform distortion

Systems and methods of RF power transmission, modulation, and amplification, including embodiments for compensating for waveform distortion

Signal extraction circuit and distortion-compensated amplifier incorporating the same

Reduced distortion amplifier

Digital transmitter