AMPLIFIER CIRCUIT AND METHOD FOR STABILIZING BIAS CURRENT OF AN AMPLIFIER CIRCUIT

POWER AMPLIFIER SUPPLY NETWORKS WITH HARMONIC TERMINATIONS

AMPLIFIER CIRCUIT, TRACKER MODULE, AMPLIFYING MODULE, AND COMMUNICATION DEVICE

AMPLIFIER CIRCUIT FOR MICROPHONE, MICROPHONE CIRCUIT AND ELECTRONIC DEVICE

POWER AMPLIFIER SYSTEM WITH DYNAMIC HEADROOM GENERATOR

POWER MANAGEMENT SYSTEMS AND METHODS RELATED TO A PLURALITY OF CONVERTERS FOR PROVIDING DUAL INTEGRATED MULTI-MODE POWER MANAGEMENT

AMPLIFIER SUPPLY CIRCUIT

APPARATUS AND METHOD OF POWER MANAGEMENT USING ENVELOPE STACKING

POWER SUPPLY CONTROL SYSTEM

HYBRID LOW POWER RAIL TO RAIL AMPLIFIER WITH LEAKAGE CONTROL

Power management systems and methods related to a plurality of converters for providing dual integrated multi-mode power management

Envelope tracking system with modeling of a power amplifier supply voltage filter

High-frequency signal processing apparatus and wireless communication apparatus

Current tracking bulk voltage generator

High quiescent current control

High-frequency signal processing apparatus and wireless communication apparatus

POWER AMPLIFIER SUPPLY NETWORKS WITH HARMONIC TERMINATIONS

AUXILIARY CONTROL CIRCUIT FOR POWER AMPLIFICATION MODULE, POWER AMPLIFICATION MODULE, AND COMMUNICATION DEVICE

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

Transceiver circuit

High-frequency signal processing apparatus and wireless communication apparatus

Power management systems and methods related to a plurality of converters for providing dual integrated multi-mode power management

OPAMP overload power limit circuit, system, and a method thereof

Integrated circuit with an input multiplexer system

Amplifiers

Potential measurement device

Systems and methods for sensing a current in a circuit

Apparatus and method of power management using envelope-stacking

Amplifiers

Power amplifier, power amplifier system and operating method thereof

High quiescent current control

Temperature compensation circuit for power amplifier

Operational amplifier with indirect current feedback current limiter

Dual-domain power distribution system in a mobile device

Envelope tracking system with modeling of a power amplifier supply voltage filter

High-frequency signal processing apparatus and wireless communication apparatus

Envelope tracking power management apparatus incorporating multiple power amplifiers

OPAMP overload power limit circuit, system, and a method thereof

Power amplifier module and power amplification method

Average power tracking power amplifier apparatus

Supply modulating circuit including switching circuit and wireless communication device including the supply modulating circuit

Multi-mode power amplifier

Logarithmic power detector

Control of envelope tracker PMIC

Apparatus and method of power management using envelope stacking

Amplifier, amplification circuit and phase shifter

Power management in transceivers

High-frequency signal processing apparatus and wireless communication apparatus

Transceiver circuit

Envelope tracking integrated circuit and related apparatus

Method and apparatus for digital envelope tracking with dynamically changing voltage levels for power amplifier

Method and apparatus for providing selective pre-signal amplifier, supply power conditioning

Dual-domain power distribution system in a mobile device

Envelope tracking system with modeling of a power amplifier supply voltage filter

High-frequency signal processing apparatus and wireless communication apparatus

Power amplifier with a tracking power supply

Multi-phase power converter system using multiple amplifier integrated circuits

Power supply signal generation

Selecting between boosted supply and battery supply

Power management in transceivers

Control of envelope tracker PMIC

Bias circuit and power amplifier circuit

Short-circuit protection apparatus and method

High-frequency signal processing apparatus and wireless communication apparatus

Switching power supply and amplification device

Current-limiting circuit for a power amplifier

Power management systems including a plurality of converters for providing dual integrated multi-mode power management

Power amplifier module

Class-H switching amplifier circuit having supply voltage proportional to an audio signal

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

Apparatus and methods for envelope tracking systems

High-frequency signal processing apparatus and wireless communication apparatus

Power management in transceivers

DC-DC converter block, DC-DC converter comprising same and associated system envelope tracking system

Amplifier

Adjusting envelope tracking power supply

Selecting between boosted supply and battery supply

High-frequency signal processing apparatus and wireless communication apparatus

Low dropout linear voltage regulator with compensation

Multi-phase power converter system using multiple amplifier integrated circuits

Multiple output boost DC-DC power converter

Load adaptable boost DC-DC power converter

Systems and methods for predictive switching in audio amplifiers

Millimetre wave power amplifier and a method of optimising such a power amplifier

Bias circuit for power amplifier

Programmable amplifier circuit capable of providing large or larger resistance for feedback path of its amplifier

High-frequency signal processing apparatus and wireless communication apparatus

Generating power supply signals for a plurality of RF power amplifiers

Energy supply unit for a traveling wave tube

Broadband envelope tracking

High-frequency signal processing apparatus and wireless communication apparatus

Audio circuit

Apparatus and methods for capacitive load reduction in a mobile device

Handheld portable high fidelity music playback with streaming and WiFi routing ability

Power amplifier module

Radio frequency circuitr having an integrated harmonic filter and a radio frequency circuit having transistors of different threshold voltages

Radio frequency circuitr having an integrated harmonic filter and a radio frequency circuit having transistors of different threshold voltages

Asymmetric multilevel backoff amplifier with radio-frequency splitter

RF amplifier having a transition shaping filter

Apparatus and methods for envelope tracking systems

DC bias regulator for cascode amplifier

Apparatus and methods for power amplifiers with phase compensation

Open loop digital PWM envelope tracking system with dynamic boosting

High efficiency variable voltage supply

Asymmetric multilevel backoff amplifier with radio-frequency splitter

Amplifier having enhanced power efficiency

Apparatus and methods for capacitive load reduction of an envelope tracker

Amplification of a radio frequency signal

High gain, high slew rate amplifier

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

Adaptive ISO-gain pre-distortion for an RF power amplifier operating in envelope tracking

RF amplifier having a transition shaping filter

Voltage modulator

Envelope tracking with low frequency loss correction

Current source, an integrated circuit and a method

Group delay calibration of RF envelope tracking

Apparatus and methods for envelope trackers

Power management in transceivers

CHARGE RECYCLING DRIVER OUTPUT STAGE

Envelope tracking system for MIMO

Envelope tracking push-pull or differential power amplifier

Amplifier system

Amplifier circuit and amplifier circuit IC chip

AMPLIFICATION DEVICE AND RADIO COMMUNICATION APPARATUS EQUIPPED WITH AMPLIFICATION DEVICE

Adaptive bias circuit and power amplifier

Switched amplifier for a variable supply voltage

Buck-boost converter for an audio amplifier with multiple operations modes

Controlling the common mode voltage of a non-isolated buck-boost converter

Differential output mode for a multi-mode power converter

Methods and apparatus for envelope tracking system

Linear row array integrated power combiner for RF power amplifiers

RF amplifier having discrete supply voltages

POWER AMPLIFIER ENVELOPE TRACKING

High efficiency amplification

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

Power amplifier module

Differential operational amplifier and bandgap reference voltage generating circuit

Power amplifying module

Amplifier circuit and method of amplifying a signal in an amplifier circuit

Signal amplifier with active power management

System linearization assembly and method for use in modifying distortion components

Circuits and methods for power amplification with extended high efficiency

Parallel correction amplifier

Joint optimisation of supply and bias modulation

Adaptive adjustment of power splitter

Apparatus and methods for phase compensation in power amplifiers

Audio amplifier and power supply voltage switching method

Radio frequency composite Class-S power amplifier having discrete power control

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

High speed power supply system

Envelope tracker with variable boosted supply voltage

Envelope tracking system for MIMO

Power module for envelope tracking

Apparatus and methods for reducing capacitive loading of an envelope tracker

High efficiency amplification

Power management in transceivers

Apparatus and methods for envelope tracking in radio frequency systems

High efficiency variable voltage supply

Integrated start-up bias boost for dynamic error vector magnitude enhancement

Amplifier circuit

Transmitter architecture and related methods

Low dissipation amplifier

Apparatus and methods for capacitive load reduction

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

Power supply circuits

Integrated start-up bias boost for dynamic error vector magnitude enhancement

Integrated start-up bias boost for dynamic error vector magnitude enhancement

VRAMP limiting using resistors

High efficiency amplification

Dual inductive element charge pump buck and buck power supplies

Amplifying device

Amplifier circuit and wireless communication equipment

Multiband RF switch ground isolation

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

Power supply pre-distortion

High efficiency path based power amplifier circuitry

Multiple functional equivalence digital communications interface

Power management in transceivers

Voltage multiplier charge pump buck

Average power tracking controller

Voltage offset loop for a switching controller

Multiple mode RF power converter

RF power converter

Interference reduction between RF communications bands

Amplifying device

Amplifier using voltage variable power supply

Methods for determining optimum power supply voltages for radio-frequency power amplifier circuitry

Envelope tracking system for MIMO

Cascaded converged power amplifier

POWER GENERATING SYSTEM

System and method for improving power efficiency of a transmitter

Power supply method and apparatus

AMPLIFIER

Switchable VRAMP limiter

Vramp limiting using resistors

Transimpedance amplifier, semiconductor device, and optical module to include an adding circuit for adding first and second current variation

Parallel correction amplifier

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

Independent PA biasing of a driver stage and a final stage

PA bias power supply undershoot compensation

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

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

Amplifier apparatus, signal processing apparatus, radio communication apparatus, connector mounting structure, and coaxial connector

RF PA linearity requirements based converter operating mode selection

Embedded RF PA temperature compensating bias transistor

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

DC-DC converter semiconductor die structure

Apparatus and methods for envelope tracking

Amplifying device

Amplifier circuit and method of amplifying a signal in an amplifier circuit

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

Overlay class F choke

RF power amplifier circuit with mismatch tolerance

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

High efficiency amplification

Frequency correction of a programmable frequency oscillator by propagation delay compensation

Fast envelope system calibration

Amplifying device and wireless transmission device using the same

Power supply circuit of power amplifier, and terminal

Combined RF detector and RF attenuator with concurrent outputs

Low noise RF driver

Auto configurable 2/3 wire serial interface

Low dissipation amplifier

Transmitter apparatus

PA bias power supply efficiency optimization

Amplifier circuit, control method for supplying power to amplifier circuit, and transmission device

Apparatus and methods for biasing a power amplifier

Apparatus and methods for capacitive load reduction

Apparatus and methods for capacitive load reduction

Joint optimisation of supply and bias modulation

Quadrature power amplifier architecture

High efficiency variable voltage supply

Absorbent article and method for maintaining or improving skin health

Radio-frequency power amplifier with fast envelope tracking

Efficient amplification stage

Push-pull linear hybrid class H amplifier

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

RF power amplifier device and operating method thereof

RF power amplifier circuit with mismatch tolerance

System and method for compensating for changes in an output impedance of a power amplifier

Mobile terminal and method of controlling a driving voltage of a power amplifier therein

Methods for determining optimum power supply voltages for radio-frequency power amplifier circuitry

Power amplifier

Amplification control circuit

Amplifier circuit and method of amplifying a signal in an amplifier circuit

POWER SUPPLY APPARATUS AND POWER SUPPLY CONTROL METHOD

System and method for power amplifier control saturation detection and correction

Method and apparatus for power converter for class D audio power amplifiers

Method and apparatus for a power supply modulator linearizer

Multiple envelope tracking system for an active antenna array

Single envelope tracking system for an active antenna array

Absorbent article and method for maintaining or improving skin health

Leakage current reduction in a power regulator

Power amplification apparatus and power amplification method

Transformer based voltage combiner with inductive shunt

Radio communication device and radio communication method

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

Polar transmitter amplifier with variable output power

Class-G line driver control signal

Leakage current reduction in a power regulator

Efficiency controlling module of power amplifier and wireless communication device using the same

Amplitude modulation controller for polar transmitter

Amplifying circuit and amplifying method

High speed power supply system

Power correction module for power amplifiers

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

Amplifier circuit

Low dissipation amplifier

Push-pull linear hybrid class H amplifier

Power amplifier

Amplifier architecture for polar modulation

Joint optimisation of supply and bias modulation

Power supply voltage forming device and polar modulation transmission device

Signal amplification

Method and apparatus for power converter for class D audio power amplifiers

Transformer-capacitor enhancement circuitry for power amplifiers

Power amplifier output voltage reduction method

Method for implementation and parameter settings of a voltage enhancement circuit for amplifiers as an integrated circuit (IC)

Amplitude control circuit, polar modulation transmission circuit and polar modulation method

Power supply providing ultrafast modulation of output voltage

Dual bias control circuit

Device and method for amplifying pulsed RF signals

Power supply processing for power amplifiers

Power source and method for controlling operational power

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

Apparatus for power amplification based on envelope elimination and restoration (EER) and push-pull switching

Method and apparatus for improving the performance of MIMO wireless systems

High efficiency amplification

Temperature compensation of collector-voltage control RF amplifiers

Polar modulation transmitter with envelope modulator path switching

Audio power conversion system

APPARATUS AND METHOD FOR ENVELOPE TRACKING POWER AMPLIFICATION IN WIRELESS COMMUNICATION SYSTEM

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

Voltage supply insensitive bias circuits

Polar modulation apparatus

Power amplifier module and a time division multiple access radio