VOLTAGE SWITCHING IN A POWER MANAGEMENT INTEGRATED CIRCUIT

BIAS CIRCUIT FOR POWER AMPLIFIER

MULTI-AMPLIFIER ENVELOPE TRACKING APPARATUS

Delay-compensating power management circuit

SYMBOL-POWER-TRACKING SUPPLY, AND WIRELESS DEVICE USING AMPLIFICATION SYSTEM POWERED BY THE SYMBOL-POWER-TRACKING SUPPLY

Multi-amplifier envelope tracking apparatus

Delay-compensating power management circuit

Amplifier circuit and methods of operation thereof

Apparatus and methods for envelope tracking systems with automatic mode selection

RF transmit system with switchable power supply device

Distributed feed-forward envelope tracking system

Control of envelope tracker PMIC

Driver circuit and operational amplifier circuit used therein

Apparatus and methods for envelope tracking systems with automatic mode selection

Distributed feed-forward envelope tracking system

Amplifier offset cancellation using amplifier supply voltage

AMPLIFIER CIRCUIT AND METHODS OF OPERATION THEREOF

Power supply signal generation

Amplifier circuit and methods of operation thereof

Selecting between boosted supply and battery supply

APPARATUS AND METHODS OF CALIBRATING A POWER AMPLIFIER SYSTEM TO COMPENSATE FOR ENVELOPE AMPLITUDE MISALIGNMENT

Driver circuit and operational amplifier circuit used therein

System for monitoring the peak power of a telecommunication signal and method for calculating the peak value and for selecting the associated supply voltage

Control of envelope tracker PMIC

POWER SUPPLY FOR CLASS G AMPLIFIER

Load-adaptive class-G amplifier for low-power audio applications

Multi-branch outphasing system and method

Power amplifier with supply switching

Linearization circuits and methods for multilevel power amplifier systems

Feed-forward envelope tracking

Apparatus and methods for envelope tracking systems with automatic mode selection

DC-to-DC converter block, converter, and envelope tracking system

Power amplifier ramping and power control with forward and reverse back-gate bias

Driver circuit and operational amplifier circuit used therein

Feed-forward envelope tracking

Digital dynamic bias circuit

Systems and methods for predictive switching in audio amplifiers

Power supply for class G amplifier

Method and electronic device for minimizing noise in power amplifier

Method and apparatus for supplying power to an amplifier

Content dependent common voltage driver systems and methods

Integrated circuit arrangement for a microphone, microphone system and method for adjusting one or more circuit parameters of the microphone system

Selecting between boosted supply and battery supply

Systems and methods for predictive switching in audio amplifiers

Audio signal amplification device, power supply device, and power supply control method

Amplifier circuit and methods of operation thereof

System and method for acoustic transducer supply

Circuit and musical instrument

Generating power supply signals for a plurality of RF power amplifiers

Methods of calibrating a power amplifier system to compensate for envelope amplitude misalignment

Asymmetric multilevel backoff amplifier with radio-frequency splitter

RF amplifier having a transition shaping filter

Dynamic bias modulator with multiple output voltage converter and power amplification apparatus using the same

Communication units and methods for power supply control

Amplifier circuit and methods of operation thereof

Method for amplifying a signal and amplifying device

Amplifier circuit and methods of operation thereof

Asymmetric multilevel backoff amplifier with radio-frequency splitter

Supply modulation for radio frequency power amplification

Apparatus and methods for calibration of envelope trackers

Linearity and noise improvement for multilevel power amplifier systems using multi-pulse drain transitions

RF amplifier having a transition shaping filter

Apparatus and methods for overdrive protection of radio frequency amplifiers

Envelope tracking with low frequency loss correction

Linearization circuits and methods for multilevel power amplifier systems

Multi-branch outphasing system and method

High efficiency amplification

Inverter/power amplifier with capacitive energy transfer and related techniques

Apparatus and methods for calibrating envelope trackers

Circuits and methods for power amplification with extended high efficiency

Power supply device for high frequency power amplifying circuit and high frequency power amplifying apparatus

Audio amplifier and power supply voltage switching method

Power supply device for high frequency power amplification circuit and high frequency power amplification device

Power supply circuit

Boost-on-demand amplifier

Apparatus and method for multilevel lossless outphasing power amplifier

High efficiency amplification

Method and apparatus for calibrating time alignment

Amplifier circuit and methods of operation thereof

Linearization circuits and methods for multilevel power amplifier systems

Method and apparatus for multilevel power amplification

Linearization circuits and methods for multilevel power amplifier systems

Control circuit and method for controlling an operation of a power amplifier

Control of a switched mode power supply and linear power supply for an audio device

Mobile device including a power amplifier with selectable voltage supply

Interference suppression for switched mode power supply

Regulated cascode current mirror scheme for transconductance amplifiers

High efficiency amplification

High-frequency amplifier, and high-frequency module and wireless transceiver using same

Linear amplifier power supply modulation for envelope tracking

Method for controlling fast tracking power supply, fast tracking power supply, and system

System and method for improving power efficiency of a transmitter

System and method for envelope tracking power supply

Power supply control circuit

Low-offset current-sense amplifier and operating method thereof

Amplifying unit, power amplifier and transmitter

Adaptive average power tracking

High efficiency amplification

Power amplifier with dynamically added supply voltages

Apparatus and methods for envelope tracking calibration

POWER SUPPLY ARRANGEMENT FOR LINE TERMINATION UNITS

Amplifying device and method involving envelope signal

Power Amplifiers for Wireless Systems

High efficiency audio amplifier

Doherty amplifier

High speed low power multiple standard and supply output driver

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

POWER AMPLIFYING DEVICES

Power amplifier

Power amplifying devices

Amplifier circuit and methods of operation thereof

POWER SUPPLY APPARATUS AND POWER SUPPLY CONTROL METHOD

Tracking power supply, method for controlling power supply, and communication apparatus

Fast tracking power supply device, fast tracking power supply control method, and communication equipment

Amplification apparatus

Power amplifier

Amplifier circuit and methods of operation thereof

High Efficiency Linear Transmitter

Amplifier circuit and methods of operation thereof

Headphone amplifier circuit

Amplifying apparatus

Amplifying device

High bandwidth power supply system with high efficiency and low distortion

Method and apparatus for controlling power supply of audio amplifier

Class-G line driver control signal

AMPLIFIER CIRCUIT

Method and apparatus for powering a wireless peripheral

System and method for dynamic drain voltage adjustment to control linearity, output power, and efficiency in RF power amplifiers

Amplifier circuit and methods of operation thereof

Headphone amplifier circuit

Amplifier current drive reversal

Methods and apparatus for power reduction in a transceiver

Transformer-capacitor enhancement circuitry for power amplifiers

System and method of using residual voltage from a prior operation to establish a bias voltage for a subsequent operation

Apparatus and method for power transmitter in wireless communication system

AMPLIFIER CIRCUIT AND METHODS OF OPERATION THEREOF

AMPLIFIER CIRCUIT AND METHODS OF OPERATION THEREOF

High efficiency amplification

Distributed class G type amplifier switching method

System and method for dynamic drain voltage adjustment to control linearity, output power, and efficiency in RF power amplifiers

POWER SUPPLY DEVICE AND METHOD OF SUPPLYING POWER SUPPLY VOLTAGE TO LOAD DEVICE

Audio amplifier circuit and electronic apparatus including the same

Amplifier circuit and methods of operation thereof

Amplifier device with adjustable supply voltage

Power amplifier

Distributed class G type amplifier switching method

Integrated implementation of a voltage boost follower and method therefor

Signal output circuit, communication apparatus and signal output control method

Method and apparatus for control of transmitter power consumption

Power amplifier unit, communication terminal and control method of power amplifier unit

Device and method for controlling a voltage control signal

Intelligent RF power control for wireless modem devices

Apparatus and method for generating internal voltage adaptively from external voltage

Power saving in a transmitter

Operational amplifier, and amplitude modulator and transmitter using the same

OFDM amplifier and method therefor

Variable bandwidth envelope modulator for use with envelope elimination and restoration transmitter architecture and method

Transmitter

Amplifier system and method

High efficiency amplification

Transmitter