Power amplifier controller with polar transmitter

Receiver

RF power amplifier controller circuit with compensation for output impedance mismatch

Automatic gain control circuit and receiver circuit

Receiver

SIGNAL LEVEL DETECTOR WITH HYSTERESIS CHARACTERISTIC

Switched capacitor voltage converter for a power amplifier

Radio system and a method for relaying radio signals

Amplifier system with digital adaptive power boost

Auto gain controllers, and communication terminals having the same

Amplifier and analog/digital converter

ELECTRONIC DEVICE FOR SELF OSCILLATING CLASS D SYSTEM

Fast common mode feedback control for differential driver

Phase error de-glitching circuit and method of operating

Amplifier compression adjustment circuit

Phase error de-glitching circuit and method of operating

Push-pull linear hybrid class H amplifier

Comparator circuit for comparing three inputs

Distortion compensator, distortion compensation method, and transmitter

Amplifier circuit and A/D converter

Power amplifier system with power control function

Reference bias generating circuit

Magnetic coupler device and magnetically coupled isolator

Integrator-based common-mode stabilization technique for pseudo-differential switched-capacitor circuits

Low voltage differential signaling driver with programmable on-chip resistor termination

Radio frequency amplification circuit utilizing variable voltage generator

Class D amplifier

Monolithic FM-band transmit power amplifier for mobile cellular devices and method of operation thereof

Bias balancing circuit

RF power amplifier system with impedance modulation

Multi-level pulse width modulation power amplifier method and apparatus

Class-D amplifier

Switching amplifier

Method and apparatus for controling output power of communication equipment

Optical receiving circuit

Power amplifier

Class D audio amplifier

Power amplifiers having improved protection against avalanche current

Semiconductor device

OUTPUT DRIVER CALIBRATION

Transmission circuit for bias control of power amplifier

Precision triangle waveform generator

Amplifier arrangement and signal generation method

Switched capacitor voltage converter for a power amplifier

Power source and method for controlling operational power

Switching power supply device and semiconductor integrated circuit

Systems, methods, and apparatuses for linear envelope elimination and restoration transmitters

Systems and arrangements for sensing current with a low loss sense element

Method for compensating signal distortions in composite amplifiers

Amplifier with dynamic bias

Integrated circuit comparator or amplifier

Constant current circuit, light emitting apparatus and power supply apparatus using that constant current circuit

Temperature compensation of collector-voltage control RF amplifiers

Class D amplifier

Adaptively tuned RF power amplifier

RF power amplifier apparatus and power supply circuit for controlling-power supply voltage to RF power amplifier

Configurable feedback for an amplifier

Apparatus for slew rate enhancement of an operational amplifier

Power amplifier controller with polar transmitter

MULTI-BAND TUNABLE RESONANT CIRCUIT

Communication semiconductor integrated circuit, communication electronic component and wireless communication system

Received signal strength indicator self-calibrating gain of limiter

Methods and systems for comparing currents using current conveyor circuitry

Measurement of burst mode optical power over multiple bursts

Drive circuit supplying current to load based on control signal, and portable information terminal including the same

Alternating current level detection circuit

High-frequency signal detector

Power amplifier module and a time division multiple access radio

Power amplification device

Differential signal generator circuit

Linear RF amplifier with polar feedback

Communication method for vacuum tube replacement devices

Semiconductor integrated circuit

Power amplifier and transmission and reception system

Dynamic biasing amplifier apparatus, dynamic biasing apparatus and method

Adaptive protection circuit for a power amplifier

Loop gain equalizer for RF power amplifier

Modulated triangular wave amplifier

Simple operational amplifiers circuit and alternative circuit of latch circuit

Method and system for precise current matching in deep sub-micron technology

Constant margin CMOS biasing circuit

Low distortion class-D amplifier

Current pre-amplifier and associated current comparator

Amplifier circuit, semiconductor device, and controlling method

Method and system for wide range amplitude detection

Digitizing circuit for anti-ambient light noise

Noise reduction system and method for audio switching amplifier

Signal detecting circuit

Buffer amplifier, driver IC and display apparatus using that driver IC

Signal conditioning circuit, a comparator including such a conditioning circuit and a successive approximation converter including such a circuit

Compensated gain control device

Sense amplifier circuit for low voltage applications

Sense amplifiers with high voltage swing

Photoelectric conversion apparatus with fully differential amplifier

Electronic Circuit Arrangement With Active Control During The Reception Of A Received Electrical Signal

Receiving circuit and optical signal receiving circuit

Amplifier apparatus and method

Method and apparatus for DC offset cancellation in amplifiers

Protected digital audio driver

Differential signal transmission and reception circuit capable of reducing power consumption

Low distortion radio frequency (RF) limiter

Microelectronic device equipped with a thermal protection circuit and thermal protection method for a microelectronic device

Circuit with Q-enhancement cell having feedback loop

Systems and arrangements for sensing current with a low loss sense element

Driver for switch and a method of driving the same

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

Peak detector and fixed gain amplifier circuit for automatic gain control and variable gain amplifier circuit

Input interface circuit adapted to both of analog and digital signals

Power amplifier

Automatic bias control circuit for reduced current consumption in a linear power amplifier

Auto-range current mirror circuit

RF amplifier with pulse detection and bias control

Low voltage CMOS differential amplifier

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

Systems, methods, and apparatuses for linear envelope elimination and restoration transmitters

ANALOG SIGNAL TRANSITION DETECTOR

Low voltage CMOS differential amplifier

Expanded performance and functions for vacuum tube replacement devices

High speed amplifier with controllable amplification and output impedance and comparator using the same

Output power control of an RF amplifier

Automatic gain control circuit and signal reproducing device

Integrated circuit comparator or amplifier

Switching power amplifier

Input stage for multiplexing and methods for using an input stage for multiplexing

Noise shaping comparator based switch capacitor circuit and method thereof

Electronic circuit

Circuit having enhanced input signal range

Auto gain controller

Phase error de-glitching circuit and method of operating

Self-oscillating power circuit

Voltage-controlled current source and variable-gain amplifier

Method for nullifying temperature dependence and circuit therefor

Light emitting apparatus and control method thereof

Automatic gain control with three states of operation

Amplifier compression controller circuit

Amplitude error de-glitching circuit and method of operating

RF power amplifier controller circuit including calibrated phase control loop

RF power amplifier controller circuit with compensation for output impedance mismatch

RF power amplifier controller circuit

Power amplifier controller circuit

Differential amplifier and operational amplifier

Radiofrequency (RF) and/or microwave power amplification device and corresponding radiocommunication terminal

Switching power supply device and a semiconductor integrated circuit

Variable gain voltage/current converter circuit having current compensation circuit for compensating for change in DC current flowing into active element for performing voltage/current conversion

Distortion compensation

CLASS D AMPLIFIER WITH START-UP CLICK NOISE ELIMINATION

Multi-phase techniques for tuning and/or measuring operations of an amplifier

Audio output driver and methods for use therewith

Current sensing circuit and boost converter having the same

Method and apparatus for generating an optimized reference current threshold

Soft saturation detection for power amplifiers

Power supply rejection for pulse width modulated amplifiers and automatic gain control

Precision triangle waveform generator

Voltage buffer for capacitive loads

Source driver output stage circuit, buffer circuit and voltage adjusting method thereof

Amplifier circuit

Signal presence detector

Variable threshold bipolar signal peak detector

Adaptable voltage control for a variable gain amplifier

SPEAKER PROTECTION CIRCUIT

Method and apparatus for controlling the output power of a power amplifier

Soft-start circuit and method for power-up of an amplifier circuit

Recovery from clipping events in a class D amplifier

Power amplifier and wireless communication device

Operational amplifier

Apparatus and method to control audio volume in D class amplifier

Protection circuit

Charging circuit and control method and integrated circuit utilizing the same

Feedback controller for PWM amplifier

Radio frequency excitation arrangement including a limiting circuit

Indicators for vacuum tube replacement devices

Zero cancellation in multiloop regulator control scheme

Apparatus and method for effecting signal chopping in an amplifier device

Apparatus and method for generating internal voltage adaptively from external voltage

Compartmental gain limiter and controlling method thereof

Power amplifier arrangement, particularly for mobile radio, and method for determining a performance parameter

Automatic bias control circuit for linear power amplifiers

Differential amplifier and operational amplifier

Wide dynamic range switching variable gain amplifier and control

Low voltage CMOS differential amplifier

Integrated wide bandwidth attenuating-and-amplifying circuit

PFM control circuit for DC regulator

Modulated triangular wave amplifier

DC level wandering cancellation circuit

Automatic gain control with three states of operation

Communication semiconductor integrated circuit, communication electronic component and wireless communication system

Radio frequency power amplifier and corresponding method

Radio frequency power amplifier and method using an amplitude control system

Method of verifying preamplifier circuit functions, and magnetic record regeneration apparatus using the same

Power efficient dynamically biased buffer for low drop out regulators

Amplifier unit and optical disc drive

Differential comparator with extended common mode voltage range

Protection of output stage transistor of an RF power amplifier

Controller and loading system thereof

Reference voltage generating circuit with ultra-low power consumption

Low-consumption voltage amplifier

Comparator with offset compensation

Low voltage CMOS differential amplifier

Sense amplifiers with high voltage swing

Methods for multiplexing

Preamplifier circuit having a variable feedback resistance

Radio frequency power amplifier

DC offset calibration apparatus

Auto gain controller

Bias current cancellation for differential amplifiers

High frequency power amplifier and transmitter

Signal determining apparatus including amplifier circuit with variable response speed

Amplifier system and method

Differential gain stage for low voltage supply

Adaptable voltage control for a variable gain amplifier

Method and apparatus for controlling common-mode output voltage in fully differential amplifiers

Analog multiplexing circuits

Charge comparator with low input offset

Low voltage comparator

Voltage buffer for capacitive loads

Class D-amplifier

Bias current cancellation for differential amplifiers

Differential signal comparator

Programmable automatic signal amplitude control circuit

Multi-band tunable resonant circuit

Adaptable voltage control for a variable gain amplifier

Predistorter

DC level wandering cancellation circuit

Communication apparatus

Programmable radio transceiver

xDSL-line-interface-circuit

Programmable radio transceiver

Switching regulator control circuit, switching regulator and switching regulator control method

Correcting DC offsets in a multi-stage amplifier

Post amplifier array integrated circuit

Power supply rejection for pulse width modulated amplifiers and automatic gain control

Amplifying circuit with adjustable amplification and transmitter system comprising such an amplifying circuit

Power amplifier

Class-D amplifier

Differential amplifier and calculation amplifier

Analog buffer and method for driving the same

Variable rate RC calibration circuit with filter cut-off frequency programmability

Pulse width modulator and loading system thereof

Class D amplifier

Recovery from clipping events in a class D amplifier

Transmission apparatus

Method and apparatus for controlling the output power of a power amplifier

Loop filter for class D amplifiers

Dynamically controlled auto-ranging current sense circuit

Receiver and common-mode voltage calibration method thereof

Techniques for amplifier output voltage limiting

Feedback circuit and methods for negative charge pump

Amplifier circuit

Current-mode hysteresis comparator

Amplification systems

Envelope tracking circuits and methods with adaptive switching frequency

Single-stage folded cascode buffer amplifiers with analog comparators