AUDIO AMPLIFIER CIRCUIT FOR DRIVING A SPEAKER

AMPLIFIER

NOISE SHAPER BASED SPREAD SPECTRUM FOR PULSE WIDTH MODULATION

CLASS-D AUDIO AMPLIFIER AND NOISE ELIMINATION DEVICE THEREOF

CIRCUITS FOR AMPLFICATION OF A DELTA-SIGMA MODULATED BIT-STREAM

Combined Class D Amplifier and Buck Regulator

Programmable chopping architecture to reduce offset in an analog front end

Receiver automatic gain control systems and methods

Amplification interface, and corresponding measurement system and method for operating an amplification interface

Increasing power efficiency in a digital feedback class D driver

Programmable chopping architecture to reduce offset in an analog front end

Amplifier with sample and average common mode feedback resistor

All-digital transmitter with wideband beamformer

Automated envelope tracking system

PWM modulator having quantizer calibratable for multi-non-ideal gain-affecting characteristics

Programmable gain amplifier with programmable resistance

Semiconductor device for reading and outputting signal from a sensor

Transimpedance amplifiers with feedforward current

PWM modulator having quantizer with controllable analog gain and calibratable for multi-non-ideal gain-affecting characteristics

Apparatuses and methods for hybrid switched capacitor array power amplifiers

Latched comparator and analog-to-digital converter making use thereof

Adjustable gain devices and methods for use therewith

Automated envelope tracking system

Switched amplifier

Load detector

Class-S RF transmitter for MRI scanners

Magnetic field sensor with feedback loop for test signal processing

Amplifier circuit

Controlling noise transfer function of signal path to reduce charge pump noise

Correcting for non-linearity in an amplifier providing a differential output

Radio frequency amplifier

Digital transmitter

Driver Interface Methods and Apparatus for Switch-Mode Power Converters, Switch-Mode Power Amplifiers, and Other Switch-Based Circuits

Amplifiers with delta-sigma modulators using pulse-density modulations and related processes

All digital multi-channel RF transmitter for paralel magnetic resonance imaging with SSB modulation

Driver interface methods and apparatus for switch-mode power converters, switch-mode power amplifiers, and other switch-based circuits

Estimating voltage on speaker terminals driven by a class-D amplifier

Audio amplifiers

Automated envelope tracking system

Signal amplification and transmission based on complex delta sigma modulator

TRANSMITTER, TRANSCEIVER CIRCUIT, AND WIRELESS TRANSMITTING AND RECEIVING SYSTEM

Audio signal amplification device

Implementation method and device of multi-bit modulation-based digital speaker system

Transmitter/receiver apparatus, transmitter apparatus and transmitting/receiving method

Transmitter and method for transmission control in a technique of delta sigma modulating

Transmitter and method of transmitting

Transmission circuit

Switched capacitor transmitter circuits and methods

Switched capacitor transmitter circuits and methods

Sigma-delta analog-to-digital converter

Transmitter and method of transmitting

High efficiency amplification

Sigma-delta modulation apparatus and sigma-delta modulation power amplifier

Transmitter and transmitting method

Interleaved multipath digital power amplification

Digital acoustic system

High efficiency amplification

One-bit digital-to-analog converter offset cancellation

Variable gain amplifier for low voltage applications

High efficiency amplification

Circuit for transmitting ASK RF signals with data signal edge adaptation

Integrated circuit

Integrated Circuit and Sensor for Imaging

RF signal generation circuit and wireless transmitter

Power amplifier architectures

Audio mixing device, method thereof, and electronic device

High efficiency amplification

Differential amplifying apparatus

Amplifier structure and amplification method thereof

Wireless communication apparatus

Distortion suppression in high-level capable audio amplification circuit

Variable gain amplifier for low voltage applications

DIGITAL AMPLITUDE MODULATOR AND POLAR TRANSMITTER USING THEREOF

Amplifier circuitry, integrated circuit and communication unit

Thermal feedback for switch mode amplification

Amplifier circuit

Audio signal controller

High level capable audio amplification circuit

ADC chopping transconductor having two pairs of cascode transistors

Nested transimpendance amplifier

ΔΣ modulation digital-analog converter, digital signal processing method, and AV device

Outphasing amplification of digital modulated signals in a radiofrequency transmission system

Front end and high frequency receiver having quadrature low noise amplifier

Power amplifier architectures

Chopping technique for continuous time sigma-delta ADCs without Q-noise folding

Sigma delta class D power amplifier and method thereof

POWER AMPLIFIER

Nested transimpedance amplifier

Digital microphone

Low voltage digital to analog converter, comparator and sigma-delta modulator circuits

Power amplifier architectures

Predistortion Calibration In A Transceiver Assembly

Switched-capacitor amplifier arrangement and method

DAC based switching power amplifier

Method and apparatus for direct digital to radio frequency conversion

High efficiency amplification

ON-THE-FLY INTRODUCTION OF INTER-CHANNEL DELAY IN A PULSE-WIDTH-MODULATION AMPLIFIER

Class D amplifier

Apparatus and method for power amplification in wireless communication system

MULTI-BAND TUNABLE RESONANT CIRCUIT

Polar modulation transmitter circuit and communications device

Class-D amplifier with noise-immunity feedback

Low voltage track and hold circuits

Nested transimpedance amplifier

Audio communication unit and integrated circuit

Low voltage operational transconductance amplifier circuits

APPARATUS AND METHOD FOR CONTROLLING VOLUME

Digital amplifier with analogue error correction circuit

Transmitter

Low voltage operational transconductance amplifier circuits

Transmission circuit and communication device

System and method for common mode bias for high frequency buffers

Sigma-delta based Class D audio or servo amplifier with load noise shaping

Sigma-delta based class D audio power amplifier with high power efficiency

Multistage amplifier apparatus with distortion compensation function

Noise-shaping amplifier with waveform lock

Signal Output Circuit, Audio Signal Output Apparatus Using The Same, And Electronic Device

DAC based switching power amplifier

Low power output stage

Radio frequency power amplifier and method using a controlled supply

Class-D amplifier

Noise shaping comparator based switch capacitor circuit and method thereof

Voltage-to-current converter

Multi-mode class-D amplifiers

Power management in a data acquisition system

Digital transmitter

Continuous-time delta-sigma analog digital converter having operational amplifiers

Device and method for pulse width modulation

Pulse width modulation in digital power amplifier

Wireless transceiver with modulation path delay calibration

Digital transmitters for wireless communication

Digital PWM amplifier with simulation-based feedback

Transmitter apparatus and wireless communication apparatus

Switching amplifier

Method and system for equalization of a replacement load

High dynamic range pre-power amplifier incorporating digital attenuator

Pre-power amplifier of load, switch array, and impedance compensation

Signal processor for use with a power amplifier in a wireless circuit

Modulation apparatus and modulation method

Nested transimpedance amplifier

Operational amplifier and related noise separation method thereof

Nested transimpedance amplifier

Method and system for creating a spectral null in a switching amplifier

Nested transimpendance amplifier

Amplifier circuit

Adaptive predistortion for a transmit system with gain, phase and delay adjustments

Base-band digital pre-distortion-based method for improving efficiency of RF power amplifier

Systems and methods for load detection and correction in a digital amplifier

Method and apparatus for combining multiple signals for high efficiency applications

Output stage for a hearing aid and method of driving output stage

Elimination of pop-up noise in class D amplifier

Summing comparator for higher order class D amplifiers

Class-D amplifier system

Modulator-amplifier

Reconfigurable transmitter

Input matching apparatus and method for power amplifier using delta-sigma modulated signal

Negative contributive offset compensation in a transmit buffer utilizing inverse clocking

Automute detection in digital audio amplifiers

Method and apparatus for a fully digital quadrature modulator

Amplifier having half-wave tracking power rails

DEVICE AND METHOD FOR SIGNAL PROCESSING

Noise-shaping amplifier with waveform lock

Nested transimpedance amplifier

Differential analog filter

Baseband signal processor

Amplifier apparatus

Radio frequency digital-to-analog converter

Switching amplifier

Segmented chopping amplifier

Portable cardiac monitor including pulsed power operation

Variable gain amplifier for low voltage applications

Method for predistortion of a signal, and a transmitting device having digital predistortion, in particular for mobile radio

Method for signal processing and a transmitting device with digital predistortion, in particular for mobile radio

Radio frequency power amplifier and corresponding method

Radio frequency power amplifier and method using an amplitude control system

Shaping noise in power amplifiers of duplex communication systems

Class D amplifier

Class D amplifier

Transmission modulation apparatus, communication apparatus and mobile wireless apparatus

Digital switching amplifier

Power amplifier and method for error correcting of output signals thereof

Amplifier fault detection circuit

Apparatus and method for reduced sample rate class S RF power amplifier

Serial audio output driver circuits and methods

Constant frequency self-oscillating amplifier

Transmitting/receiving device having a polar modulator with variable predistortion

Polar modulator and a method for modulation of a signal

Linear commutating amplifier

Polar modulator and method for modulation of a signal

Adaptive predistortion for a transmit system with gain, phase and delay adjustments

Noise shaper for shaping a power spectral density of an error signal and method therefore

Class-D amplifier with noise-immunity feedback

System and method for high frequency, high output swing buffers

Pulse width modulation amplifier

Power amplifying apparatus

Linear buffer

Switching amplifier comprising a delta-sigma modulation circuit

Adaptive predistortion for a transmit system with gain, phase and delay adjustments

Digital amplifier

Low noise amplifier for electro-physiological signal sensing

Offset cancellation in a switching amplifier

On-the-fly introduction of inter-channel delay in a pulse-width-modulation amplifier

Driver circuit for driving a power amplifier

Apparatus and method for high efficiency power amplification for a mobile communication system

PWM driver and class D amplifier using same

Switching power amplifier and method for amplifying a digital input signal

System and method for common mode bias for high frequency buffers

Method and system for equalization of a replacement load

Apparatus and method for direct quadrature power amplifier modulation

Pulse width-modulated noise shaper

Delay locked loop circuit, digital predistortion type transmitter using same, and wireless base station

Phase corrected miller compensation of chopper and nested chopper amplifiers

Class-D amplifier having high order loop filtering

Hybrid polar/cartesian digital modulator

High efficiency amplification

Power amplifier apparatus and DC component removing method

Current mode analog-to-digital converter

Audio signal processing apparatus and audio signal processing method

Class-D amplifier

Transmission device and delay time adjustment method thereof

Low noise high isolation transmit buffer gain control mechanism

Audio amplifier

Method and apparatus for digital amplitude and phase modulation

Fully digital transmitter including a digital band-pass sigma-delta modulator

Gain boosted operational amplifier having a field effect transistor with a well biasing scheme

Class D amplifier and a method of pulse width modulation

Efficient pulse amplitude modulation transmit modulation

Multi-band tunable resonant circuit

Methods and apparatus for amplification in a tuner

Class-D amplifier

Operational transconductance amplifier input driver for class D audio amplifiers

Class D amplifier

Programmable radio transceiver

Direct current offset correction systems and methods

Class D amplifier

Programmable radio transceiver

Low distortion class D amplifier using a controlled delay

Transmitting circuit, communication equipment, audio equipment, video equipment, and transmitting method

Reconfigurable transmitter with direct digital to RF modulator

Polar transmitter with digital to RF converter

Switching power amplifier using a frequency translating delta sigma modulator

Power amplification device

Apparatus and method of limiting power applied to a loudspeaker

Data converter and data conversion method, and transmitter circuit, communications device and electronic device using the same

Radio frequency digital-to-analog converter

Amplifier using delta-sigma modulation

Modulator—amplifier

Direct outphasing modulator

Switched capacitor circuit compensation apparatus and method

Betamimetics having a long-lasting activity, processes for preparing them, and their use as medicaments

Filter for a modulator and methods thereof

System and method for reducing dynamic range and improving linearity in an amplication system

Compensating for load pull in electromagentic signal propagation using adaptive impedance matching

Word length reduction circuit

Volume adjustment device, digital amplifier, and digital signal reproducing device

Multistage differential amplifier

Amplifier or filter circuit in switched capacitor circuit logic and method for amplifying or filtering signals

Digital amplification device

Modified polar amplifier architecture

Multiple polar amplifier architecture

Variable supply amplifier system

Delta-sigma digital-to-analog converter assembly

Signal converter, output amplifying device, audio apparatus, and transmitting and receiving system

Switching amplifier architecture

Efficient broadband switching-mode amplifier

Linear buffer

Method and apparatus to compensate AM-PM delay mismatch in envelope restoration transmitter

Digital amplifier

High-efficiency amplifier, converter and methods

Class D amplifier

Signal processing circuit

Method of acquiring low distortion and high linear characteristic in triode-typed transconductor

D-class signal amplification circuit

Signal processing device and class D amplifier that can reduce radiation noise even if the number of channels of a digital audio signal inputted thereto increases

Switchable operational amplifier circuit

Method and apparatus for efficient mixed signal processing in a digital amplifier

Pop and click reduction using DAC power up and power down processing

Digital cross cancellation system

System and method for reducing dynamic range and improving linearity in an amplication system

Loop filter for class D amplifiers

Audio amplifier

Device and method for signal processing

Envelope elimination and restoration device

MOSFET well biasing scheme that mitigates body effect

Adaptive predistortion for a transmit system with gain, phase and delay adjustments

Adaptive predistortion for a transmit system with gain, phase and delay adjustments

Adaptive predistortion for transmit system with gain, phase and delay adjustments

Adaptive predistortion for a transmit system with gain, phase and delay adjustments

Low-noise, high-accuracy single-ended input stage for continuous-time sigma delta (CTSD) analog-to-digital converter (ADC)

Amplifiers

Adaptive baseline correction for delta amplification

Envelope tracking power amplifier circuit and related apparatus

Receiver automatic gain control systems and methods for asymmetrical or unbalanced constellations

Fully differential adjustable gain devices and methods for use therewith

Methods and apparatus for a class-D amplifier