Gain invariant impedance feedback amplifier

Power amplifier (PA) system with electrothermal feedback circuitry for PA gain correction

Amplifier circuit

Distortion compensation apparatus and distortion compensation method

RF amplification device with power protection during high supply voltage conditions

Power amplifier

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

Digital predistortion system and method with extended correction bandwidth

Closed loop control system, and an amplifier in combination with such a closed loop control system

High frequency circuit and high frequency module including the same

Filter for switched mode power supply

Supply modulator

Class AB signal generation apparatus

Power amplifier

Control system for a power amplifier

Expanded range DC-DC converter

Amplifier circuits

Power detection circuit and RF signal amplification circuit having the same

Apparatus and method for amplifying a radio-frequency signal

Power amplifier open loop current clamp

Power amplifier module

Time and amplitude alignment in envelope tracking amplification stage

Power amplifier and distributed filter

Transmitter and method with RF power amplifier having predistorted bias

Audio amplifier and power supply voltage switching method

Convergence estimation for iterative predistortion factor determination for predistortion in power amplifiers

Dual-band high efficiency Doherty amplifiers with hybrid packaged power devices

Power supplies

Dynamic headroom for envelope tracking

TIMING ALIGNMENT FOR MODULATED SUPPLY

Control loop for amplification stage

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

Quiescent current equalization method, output stage circuit, class AB amplifier and electronic device

Bias circuit and power amplifier with selection function of power mode

Power amplifier with improved low bias mode linearity

Marchand balun and power amplifier using the same

Power supply device, method for managing power supply thereof and wireless communication terminal

BIPOLAR TRANSISTORS WITH CONTROL OF ELECTRIC FIELD

Power amplifier apparatus, transmitter apparatus, and method of controlling the power amplifier apparatus

Semiconductor device and circuit with dynamic control of electric field

Receiver for wireless communication system

Dual-band semiconductor RF amplifier device

Power module for envelope tracking

Radio frequency power amplifiers

Analog feedback amplifier

High Efficiency Amplification

Radio frequency amplifying circuit and power amplifying module

Apparatus and method for asymmetrically driven partial outphasing power amplifier

ADAPATIVE POWER AMPLIFIER

Power amplifier system with supply modulation mitigation circuitry and methods

Power amplifier spurious cancellation

Power amplifying module

Differential power amplifier using mode injection

Amplifier circuit

Transformer and electrical circuit

High efficiency power amplifiers with advanced power solutions

Divide by 2 and 3 charge pump methods

Method and Device for Protecting a High-Frequency Power Amplifier Against a Termination fault

Radio frequency amplifying apparatus having protection voltage varying function

High efficiency amplification

Power amplifier using differential structure

Bi-directional power supply signal based linear amplifier

Input match network with RF bypass path

High efficiency power amplifier

Systems and methods for biasing amplifiers using adaptive closed-loop control and adaptive predistortion

Apparatus and methods for biasing a power amplifier

Power amplifiers with push-pull transistors, capacitive coupling for harmonic cancellation, and inductive coupling to provide differential output signals

Amplification circuit having optimization of power

On-die harmonics filtering for radio frequency power amplifiers

Systems and methods for biasing amplifiers during high-power operation with adaptive closed-loop control

Systems and methods for biasing amplifiers with adaptive closed loop control

High efficiency output stage amplification for radio frequency (RF) transmitters

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

RF power transistor circuits

RF power transistor circuits

Electronic system, RF power amplifier and output power compensation method thereof

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

System and method for power amplifier over-voltage protection

Power amplifier

System and method for pre-charging a current mirror

Power amplifier and power transmission apparatus

Transmitter architecture and related methods

Power amplifier controller

Low dissipation amplifier

CMOS based TX/RX switch

CMOS based RF antenna switch

Radio frequency front end module circuit incorporating an efficient high linearity power amplifier

Envelope tracking signal generator incorporating trim cell

Efficient linear integrated power amplifier incorporating low and high power operating modes

Two dimensional quad integrated power combiner for RF power amplifiers

Linear row array integrated power combiner for RF power amplifiers

DC-DC converter incorporating trim cell

RF power amplifier splitter

Power amplifier with stabilising network

Voltage supply circuit, audio output apparatus, and voltage supplying method

Power amplifier

Power amplifier with variable output impedance

POWER AMPLIFIER

Power amplifier

Process-compensated HBT power amplifier bias circuits and methods

Power amplifier and linearization techniques using active and passive devices

Low voltage high efficiency gallium arsenide power amplifier

Semiconductor apparatus comprised of two types of transistors

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

Silicon-on-insulator high power amplifiers

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

Pseudo-envelope following power management system

High efficiency amplification

Power amplifier with feedback impedance for stable output

RF power amplifier

Dual inductive element charge pump buck and buck power supplies

Enhanced pulse frequency modulation (PFM) control mode for switching regulators

Power module for envelope tracking

Headphone amplifier

Peripheral apparatus

IMPEDANCE MATCHING CIRCUIT, POWER AMPLIFIER AND MANUFACTURING METHOD FOR VARIABLE CAPACITOR

Envelope tracking amplifier

Embedded speaker protection for automotive audio power amplifier

Differential power management and power amplifier architecture

Power amplifier

Power amplifier

Multi-mode power amplifier

Apparatus and methods for voltage converters

Silicon-on-insulator high power amplifiers

Apparatus and methods for power amplifiers

POWER AMPLIFIER WITH IMPROVED POWER EFFICIENCY

Low output impedance RF amplifier

POWER AMPLIFIER AND OPERATION CONTROLLING CIRCUIT THEREOF

Multi-band power amplifier

Digitally controlled power supplies for an audio amplifier

Thermally coupled current limiter

POWER AMPLIFIER SYSTEM

RF power transistor circuit

Signal path termination

Transmit circuit, method for adjusting a bias of a power amplifier and method for adapting the provision of a bias information

Multi-tier power supply for audio amplifiers

PHASE-ARRAYED TRANSCEIVER

Pseudo-envelope following power management system

Apparatus and methods for biasing power amplifiers

Apparatus and methods for envelope tracking

Integrated RF front end with stacked transistor switch

Variable frequency circuit controller

High efficiency amplification

Systems and methods for thermal management for telecommunications enclosures using heat pipes

Apparatus and methods for envelope tracking calibration

RF power amplifier

Systems and methods for power control in a multiple standard mobile transmitter

Low dissipation amplifier

Differential power amplifiers with push-pull power amplifiers and even-harmonic cancellation

Radio frequency power amplifier with linearizing predistorter

Gated class H amplifier/line driver system and method

High efficiency linearization power amplifier for wireless communication

Power amplifier with stabilising network

Systems and methods for improved power yield and linerization in radio frequency transmitters

System and method for pre-charging a current mirror

Integrated RF front end with stacked transistor switch

Bi-directional and adjustable current source

System and method for power amplifier over-voltage protection

RF power amplifier

Modulated supply stage with feedback to switched supply

Silicon-on-insulator high power amplifiers

Low output impedance RF amplifier

Class G audio amplifiers and associated methods of operation

Multiband RF Device

Power amplifier with stabilising network

Filter for switched mode power supply

Headphone amplifier circuit

Control loop for amplification stage

Method and system for amplifier control

Class-G line driver control signal

RECEIVER FOR WIRELESS COMMUNICATION SYSTEM

Low dissipation amplifier

Bi-directional and adjustable current source

RF power amplifier

Headphone amplifier circuit

System and method for pre-charging a current mirror

High efficiency amplification

Analog power amplifier predistortion methods and apparatus

DC offset canceling circuit

Power supplies for RF power amplifier

Gate driver circuit for power transistor

Class G motor drive

Driver amplifier circuit having reduced DC bias

Constant Current Darlington Circuits for High Power

Power amplifier and method thereof

Display panel driving circuit

Power amplifier with stabilising network

High efficiency linearization power amplifier for wireless communication

Power amplifier input structure having a differential output

Low voltage low power class A/B output stage

Integrated RF front end with stacked transistor switch

Semiconductor indicator for voltage diagnostics in power amplifiers

Output power detection circuit

Active LC filtering damping circuit with galvanic isolation

Power amplifier module

Power amplifier module

High efficiency amplification

Method and apparatus for calibrating center frequency of power amplifier

Power amplifier (PA) efficiency with low current DC to DC converter

Class AB output stage circuit with stable quiescent current

Class-AB amplifier for dual voltage supplies

Class G-amplifiers

Communication terminal

Power amplifier input structure having a differential output

System and method for driving one or more loads

Linearity enhanced power amplifier stage

Power amplifier with active bias circuit

Power amplifier having enhanced swing cascode architecture

High voltage high speed amplifier using floating high side structure

Methods and devices for controlling RF, multi-carrier amplifier signal power

Zero voltage class AB minimal delay output stage and method

Method and standard module for amplifying pulsed power

Supply generator and associated control methods

Supply generator and associated control methods

Digitally modulated polar power amplifier

Active filter for electromagnetic interference (EMI) reduction using a single connection point and a negative impedance converter

Supply generator and associated control methods

Open loop reactance matching circuitry

Open-loop adaptive bias power amplifier

Vacuum tube and transistor amplifier natural sound field tone dividing system

Power amplifier module using phase-change material (PCM) radio frequency (RF) switches and selectable matching networks

Driving circuit for single crystal RTC and RF clock

Digital communications circuits and systems

Method and device for power signal generation utilizing a fully-differential power amplifier

Fast turn-on amplification system

Monolithic microwave integrated circuits having both enhancement-mode and depletion mode transistors

Detuning multiband tunable matching networks

Wide modulation bandwidth radio frequency circuit

Receiver circuits for millimeter wave devices

Method and a device for detecting oscillation and signal coupling device

High-speed open-loop switch-mode boost converter

Adaptive counter measure control thwarting IMD jamming impairments for RF plasma systems

Programmable impedance control for a transformer

High efficiency transmit-receive switches

Adaptive biasing control for radio frequency power amplifiers

Doherty power amplifier

Stacked PA power control

Biasing for lower Rof LDO pass devices

Power amplifier self-heating compensation circuit

Offset detection circuit

LDO with fast recovery from saturation

Wide-band amplifiers using clipper circuits for reduced harmonics

Amplifier devices with envelope signal shaping for gate bias modulation

Power amplifier circuit and method of design

Automatic gain control (AGC) circuit and method to control amplifier gain based on a duration of an overload condition

High power radio frequency amplifier with dynamic digital control

Series-type Doherty amplifier

Rotated field effect transistor topology amplifier

Waveguide to microstrip line N-port power splitter/combiner

Polar modulation using product mode

Methods and apparatus for relatively invariant input-output spectral relationship amplifiers

Polar modulation using product mode

Method for system level oriented load-pull-based envelope tracking power amplifiers

Mixer impairment correction based on volterra series

Efficient signal classification in digital pre-distortion systems

Method and apparatus for envelope tracking calibration

Apparatus and method for improving power supply rejection ratio

Body driven power amplifier linearization

Apparatuses and systems for a bias network with accurate quiescent current control

Tunable filter for RF circuits

Communication device with power supply load variation noise reduction for envelope tracking and method therefor

Apparatus and methods for dual loop power amplifier digital pre-distortion systems

Predistortion circuit with concave characteristic

Programmable broad bandwidth gain amplifier

Radio frequency transmitting device and radio frequency receiving device

Memory polynomial based digital predistorter

RF stacked power amplifier bias method

Wide-band amplifiers using clipper circuits for reduced harmonics

High power and high linearity cascode amplifier

High linearity low noise amplifier