Selbstvorgespannte Oberschwingungen und Hocheffiziente Inverse Klasse-D-Hf-Leistungsverstärkerschaltung

Details

Veröffentlichungs-Nr.

EP4716098

Anmeldetag

23. September 2025

Veröffentlichung

25. März 2026

Rechtsraum

EP

Abstract

Power amplifier circuitry is disclosed having an inverse Class-D amplifier functioning as a power amplifier and self-biasing circuitry generating gate bias voltages for switching type power transistors within the power amplifier. The self-biasing circuitry includes a low-dropout regulator that generates and applies a gate bias voltage in response to a feedback current scaled according to the power amplifier's operating current. A current-based digital-to-analog converter is configured to generate the reference current based on a received digital value. Additionally, a digital processor is configured to generate the digital value in response to the gate bias voltage. The power amplifier circuitry enhances performance and efficiency while ensuring precise control over power transistors' operation, offering advantages for various applications requiring radio frequency signal amplification.

Anmelder

Firma

QORVO US, INC.

Land

🇺🇸 USA