Inventor

RIPLEY DAVID STEVEN

US112 patents

⚠️ This page may combine multiple inventors who share the name “RIPLEY DAVID STEVEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RIPLEY DAVID STEVEN

SKYWORKS SOLUTIONS INC

Apparatus and methods for envelope tracking systems

Apparatus and methods for envelope tracking systems

Compression control of cascode power amplifiers

Compression control through power amplifier load adjustment

Apparatus and methods for envelope tracking in a mobile device

Compression control through power amplifier voltage adjustment

Apparatus and methods for envelope trackers

Apparatus and methods for envelope trackers

Apparatus and methods for envelope tracking systems

Apparatus and methods for envelope tracking in radio frequency systems

Power amplifier modules including related systems, devices, and methods

Dual mode power amplifier control interface with a three-mode general purpose input/output interface

Apparatus and methods for calibration of envelope trackers

Power amplifier modules including bipolar transistor with grading and related systems, devices, and methods

Apparatus and methods for calibrating envelope trackers

Apparatus and methods for envelope tracking systems

Power amplifier with bias adjustment circuit

Compression control through amplitude adjustment of a radio frequency input signal

Peak detecting cascode for breakdown protection

Advanced gain shaping for envelope tracking power amplifiers

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

Process-compensated HBT power amplifier bias circuits and methods

Radio frequency switches with reduced clock noise

Circuits and methods related to voltage converters

Dual mode power amplifier control interface with a multi-mode general purpose input/output interface

Contour tuning circuit

Power amplification system with variable supply voltage

Tunable notch filter

Power amplification system with shared common base biasing

Tunable notch filter and contour tuning circuit

Voltage supply system with boost converter and charge pump

Dual mode power amplifier control interface with a multi-mode general purpose input/output interface

Variable switched DC-to-DC voltage converter

Variable switched capacitor DC-DC voltage converter

Process-compensated HBT power amplifier bias circuits and methods

Dual mode power amplifier control interface with a multi-mode general purpose input/output interface

Variable switched DC-to-DC voltage converter

Variable switched capacitor DC-DC voltage converter

Dual mode power amplifier control interface with a two-mode general purpose input/output interface

Apparatus and methods for tuning a voltage controlled oscillator

System and method for power amplifier over-voltage protection

Apparatus and methods for tuning a voltage controlled oscillator

Frequency modulation and pulse skipping mode voltage controller

Frequency modulation based voltage controller configuration

Apparatus and methods for biasing a power amplifier

Switched-mode power supply with switch resizing

BALTEANU FLORINEL G

Apparatus and methods for envelope tracking

MOTOROLA INC

Integrated image reject mixer

RIPLEY DAVID STEVEN

Apparatus and methods for envelope tracking calibration

LIU HUI

Variable switched DC-to-DC voltage converter