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

Power amplifier circuit

Digital predistortion of signals

Multi-mode envelope tracking target voltage circuit and related apparatus

Envelope tracking amplifier apparatus

Envelope tracking circuit and related apparatus

Envelope tracking integrated circuit and related apparatus

Repeater for Relaying Telecommunications Signals

Modulated power apparatus

Using multiple envelope tracking signals in a power amplifier

Fast envelope tracking systems for power amplifiers

Power supply modulator and wireless communication apparatus including the same

Dual-input envelope tracking integrated circuit and related apparatus

Data slicer and receiver

Intrinsically linear, digital power amplifier employing nonlinearly-sized RF-DAC, multiphase driver, and overdrive voltage control

Apparatus and methods for biasing of power amplifiers

Multi-radio access technology envelope tracking amplifier apparatus

Envelope tracking integrated circuit and related apparatus

Fast switched pulsed radio frequency amplifiers

Electronic device including earphone, and method of controlling the electronic device

Power amplifier module

Detection circuit, corresponding device and method

Group delay optimization circuit and related apparatus

Pre-distortion technique for a circuit arrangement with an amplifier

Power amplifying circuit

Multi-band digital compensator for a non-linear system

Power amplifier module, frontend circuit, and communication device

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

POWER AMPLIFICATION WITH ENVELOPE TRACKING TO PROVIDE ENVELOPE-BASED BIASING AND SUPPLY VOLTAGES

Front-end modules with integrated power amplifiers and low noise amplifiers to support carrier aggregation

High-frequency signal processing apparatus and wireless communication apparatus

Radio frequency front-end circuit

Multimode envelope tracking circuit and related apparatus

Envelope tracking system

Method and device for selectively supplying voltage to multiple amplifiers by using switching regulator

Envelope tracking system

Supply modulator for power amplifier

Distributed envelope tracking amplifier circuit and related apparatus

DEVICES AND METHODS RELATED TO VARIABLE LOAD POWER AMPLIFIER SUPPORTING DUAL-MODE ENVELOPE TRACKING AND AVERAGE POWER TRACKING PERFORMANCE

Voltage generation circuit and related envelope tracking amplifier apparatus

Distributed envelope tracking amplifier circuit and related apparatus

Multi-voltage generation circuit and related envelope tracking amplifier apparatus

Adaptive envelope tracking threshold

Power amplifier circuit

Optocoupler emulating input stage for digital isolators

Envelope tracking amplifier circuit

Apparatus and methods for envelope tracking systems with automatic mode selection

Series voltage regulation modulating power supply

Apparatus and methods for power amplifiers with positive envelope feedback

PA output memory neutralization using baseband I/O capacitance current compensation

Radio frequency amplifying device and magnetic resonance imaging apparatus

Envelope tracking circuit and related power amplifier apparatus

Envelope tracking circuit and related power amplifier apparatus

Distributed feed-forward envelope tracking system

Power amplifier with a tracking power supply

Power amplifier linearization system and method

Apparatus and method for assisting envelope tracking with transient response in supply voltage for power amplifier

Power supply signal generation

Sound sensing with time-varying thresholds

Source follower

Envelope tracking voltage tracker circuit

Envelope tracking amplifier apparatus

Envelope tracking method and mobile terminal

Power amplifier circuit

Multistage power amplifier with linearity compensating function

Multistage power amplifier with bias compensating function

Power envelope tracker and adjustable strength DC-DC converter

Envelope tracking amplifier circuit

Intrinsically linear, digital power amplifier employing nonlinearly-sized RF-DAC, multiphase driver, and overdrive voltage control

Class D amplifier circuit

Doherty radio frequency amplifier circuitry

Envelope tracking with fast error amplifiers for multiple input multiple output communications

AMPLIFYING SIGNALS USING POSITIVE ENVELOPE FEEDBACK

Linearization with envelope tracking or average power tracking

High efficiency power amplifier architectures for RF applications

Charge-pump tracker circuitry

Power amplification apparatus, remote radio unit, and base station

Automated envelope tracking system

Envelope tracking supply modulator topology for wipe-bandwidth radio frequency transmitter

Selecting between boosted supply and battery supply

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

Low modulation bandwidth envelope tracking circuit

Techniques for improving cellular current consumption

WIDE-BAND AMPLIFIERS USING CLIPPER CIRCUITS FOR REDUCED HARMONICS

Power amplification circuit

Multimode voltage tracker circuit

Adaptive multiband power amplifier apparatus

Envelope tracking power management circuit

Dual-output and dual-mode supply modulator, two-stage power amplifier using the same, and supply modulation method therefor

Wide modulation bandwidth radio frequency circuit

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

Programmable low dropout regulators with fast transient response when programming output voltage

Envelope tracking method, system, and device employing the method

Parallel use of serial controls in improved wireless devices and power amplifier modules

Envelope tracking circuit

Envelope tracking circuit

Envelope tracking power management circuit

Load modulation in signal transmission

Power amplifiers having reduced loss

Dynamically biased power amplification

Envelope detecting circuit

Power supply for envelope tracking

Amplifier linearization in a radio frequency system

Multistage amplifier linearization in a radio frequency system

Transmission unit

Wide-bandwidth envelope tracking circuit

Envelope tracking amplifier circuit

Wireless receiving device, wake-up receiver and method for calibrating a frequency and a bandwidth

Envelope trackers providing compensation for power amplifier output load variation

Low power wake-up receiver

Quadrature amplifier having envelope control

Integrated CMOS transmit/receive switch in a radio frequency device

Power amplifier module, frontend circuit, and communication device

Cascode amplifier bias circuits

High-frequency signal processing apparatus and wireless communication apparatus

Doherty amplifier having envelope control

Power amplifier circuit

Resonant power converters with switchable resonant modes

Supply modulator, modulated power supply circuit, and associated control method

Reduction of power consumption in integral ultra-wideband power amplifiers

Amplifiers for radio-frequency applications

Boost control signal generator

Amplification system with differential envelope-based bias

Envelope tracking bias circuit and power amplifying device

Multi-mode power management system supporting fifth-generation new radio

Envelope tracking current bias circuit and power amplifying device

Mismatch detection using replica circuit

Class-S RF transmitter for MRI scanners

Envelope-shaped bias for power amplifier

CIRCUITS, DEVICES AND METHODS RELATED TO POWER AMPLIFICATION WITHOUT MATCHING NETWORK

Envelope tracking power management circuit

Dynamic look up table measurements for transmitter with envelope tracking systems

Supply modulator for power amplifier

Method and apparatus for digital pre-distortion with reduced oversampling output ratio

Envelope tracking bias circuit

Power amplifier linearization system and method

Power amplifier module

Fiber-optic node with forward data content driven power consumption

ARCHITECTURE FOR HIGH-BANDWIDTH POWER SUPPLY TO POWER AMPLIFIER (PA) DISTRIBUTION NETWORK

Multi-mode envelope tracking amplifier circuit

Feed-forward envelope tracking

Apparatus and methods for envelope tracking systems with automatic mode selection

Wide bandwidth envelope trackers

ADAPTIVE-SNR ULTRA-LOW-POWER ULTRA-LOW-NOISE MICROPHONE

Fast envelope tracking systems for power amplifiers

Low distortion multiple power amplifier power supply

Wireless communications systems with envelope tracking capabilities

Envelope-tracking power supply modulator

Supply modulator and communication device including the same

Power amplifier apparatus, envelope tracking amplifier apparatus and method of amplifying a signal

Audio amplifiers

Audio amplifiers

Electric transmission cable module and transmission loss compensation circuit

Low wideband noise multi-stage switch-mode power amplifier

Envelope-tracking control techniques for highly-efficient RF power amplifiers

Envelope-tracking current bias circuit with offset cancellation function

Multi-standard transmitter architecture with digital upconvert stage and gallium nitride (GAN) amplifier circuit

Envelope trackers providing compensation for power amplifier output load variation

RADIO FREQUENCY SYSTEM WITH SWITCH TO RECEIVE ENVELOPE

Multi-level digital adaptive PA bias for microwave radios

Method for producing an amplification stage for a variable envelope signal

Power amplification system with adaptive bias control

Apparatus and methods for power amplifiers with positive envelope feedback

Apparatus and methods for bias switching of power amplifiers

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

Multi-mode power management system supporting fifth-generation new radio

Power amplifier control method and apparatus, and power amplifier control system

Apparatus and methods for envelope tracking systems

Power amplification module

Wide-band amplifiers using clipper circuits for reduced harmonics

Apparatus and methods for reducing inductor ringing of a voltage converter

Control system for a power amplifier

Variable load power amplifier supporting dual-mode envelope tracking and average power tracking performance

POWER SOURCE CIRCUIT

Power amplifier module

Modulated supply amplifier with adjustable input parameter configuration

Feed-forward envelope tracking

Power envelope tracker and adjustable strength DC-DC converter

Schottky enhanced bias circuit

Stacked power amplifier power control

Frequency dependent envelope tracking

Selective power amplifier

Apparatus and method for improving efficiency of power amplifier

Linear amplifier having higher efficiency for envelope tracking modulator

RF power amplifier dynamic supply boosting circuit

Digital dynamic bias circuit

Power amplifier circuit and high-frequency module

High-frequency signal processing apparatus and wireless communication apparatus

Bias modulation active linearization for broadband amplifiers

Amplifier architecture using positive envelope feedback

Efficient wideband envelope tracking power amplifier

Dual hysteretic control loop of envelope tracking

Method and electronic device for minimizing noise in power amplifier

Amplifier with power dissipation reduction using single radio frequency digital-to-analog converter

Power amplifier with improved linearity

Power amplifier operation

RF power amplifier bias modulation with programmable stages

Amplifier linearization in a radio frequency system

Source follower

Mismatch detection using replica circuit

Class D amplifier circuit

POWER AMPLIFICATION SYSTEM WITH PROGRAMMABLE LOAD LINE

Supply modulator and communication device including the same

High efficiency power amplifier architectures for RF applications

Power supply circuit

Receiver

Multi-mode radio frequency (RF) power amplifier circuit

Envelope tracking for high power amplifiers

Systems and methods providing loadline modulation of a power amplifier

Power amplification module

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

Outphased spatial combiner

Outphased spatial combiner

Source follower based envelope tracking for power amplifier biasing

Adaptive multiband power amplifier apparatus

Envelope tracking current bias circuit and power amplifier apparatus

Supply modulator and communication device including the same

ENVELOPE DETECTING CIRCUIT

Amplifier circuitry and method for amplifying a signal using said amplifier circuitry

Cascode amplifier bias circuits

Multistage amplifier linearization in a radio frequency system

Multi-mode envelope tracking amplifier circuit

Power supply circuit of wireless mobile device

Switch with envelope injection

POWER SUPPLY CONTROL

Adjusting envelope tracking power supply

Selecting between boosted supply and battery supply

High-frequency signal processing apparatus and wireless communication apparatus

Parallel use of serial controls in improved wireless devices and power amplifier modules

Apparatus and a method for providing a supply control signal for a supply unit

Circuits and operating methods thereof for correcting phase errors caused by gallium nitride devices

System for monitoring the peak power for an RF power amplification and associated method of calculating peak value and of selecting supply voltage

Method for limiting amplifier input current to avoid low voltage conditions

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

Methods and devices for predistortion of signals

Multiphase power supply having single comparator

Monitoring system, monitoring method, and storage medium having monitoring program stored therein

Power amplification system with envelope-based bias

Envelope tracking power management circuit

Fast switched pulsed radio frequency amplifiers

Selective power amplifier

Systems and methods for predictive switching in audio amplifiers

Adaptive impedance power amplifier

Power amplifier module

Curve fitting circuit, analog predistorter, and radio frequency signal transmitter

Audio amplifier system

Wireless communication device and power source device

Efficient wide bandwidth envelope tracking power supply

Duty cycle range control for envelope tracking switching regulators

Modulated supply amplifier with adjustable input parameter configuration

AMPLIFIER CONTROL APPARATUS

Low noise amplifier (LNA) system

Envelope tracking power amplifying apparatus and method

Method for controlling supply voltage of power amplifier, and electronic device

High-frequency signal processing apparatus and wireless communication apparatus

Predistortion processing apparatus and method

Power amplifier matching circuit with DVCs

DYNAMIC DEAD TIME MANAGEMENT

Dual-mode envelope tracking power management circuit

SINGLE-INPUT SINGLE-OUTPUT TWO-BOX POLAR BEHAVIORAL MODEL FOR ENVELOPE TRACKING POWER AMPLIFIERS

Analog predistorter core module and analog predistorter system

Calibration techniques for envelope tracking power amplifiers

Control system for a power amplifier

Apparatus and methods for reducing inductor ringing of a voltage converter

Apparatus and methods for envelope tracking systems

Output matching of power amplifiers

Envelope detectors with high input impedance

Amplifier with base current reuse

Automated envelope tracking system

Class D amplifier circuit

Envelope tracking modulator with feedback

High efficiency variable voltage supply

Audio system having an improved efficiency and extended operation time

Apparatus for and method of a supply modulator for a power amplifier

Amplifier devices with in-package bias modulation buffer

Multi-phase amplifier circuits and methods for generating an amplified output signal

Apparatus and methods for envelope shaping in mobile devices

Low distortion multiple power amplifier power supply

Generating power supply signals for a plurality of RF power amplifiers

Timing alignment sensitivity for envelope tracking

Fiber-optic node with forward data content driven power consumption

Apparatus and methods for power enhancement of self-biased distributed amplifiers with gate bias networks

Gain control circuit and gain control method

Power amplifier circuit

Radio frequency power amplification system, radio frequency power amplification method, transmitter, and base station

Mismatch detection using replica circuit

Speaker driver

Apparatus and method for dynamically biased baseband current amplifier

Broadband envelope tracking

Class D amplifier using Fs/4 modulation and envelope tracking power supplies

Bias control for stacked transistor configuration

Amplifier circuitry for envelope modulators, envelope modulators incorporating said amplifier circuitry and method of modulating a signal envelope

High-frequency signal processing apparatus and wireless communication apparatus

Analog RF pre-distorter and non-linear splitter

Receiver and operating method thereof

Multi-Channel Noise Reduction System with Direct Instrument Tracking

Power amplifier module

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

Power amplifier linearization system and method