Skyworks Solutions, Inc.
POWER AMPLIFICATION WITH ENVELOPE TRACKING TO PROVIDE ENVELOPE-BASED BIASING AND SUPPLY VOLTAGES

Abstract:

Disclosed herein are amplification systems that are dynamically biased based on a signal indicative of an envelope of an input radio-frequency (RF) signal being amplified. The amplification systems include a power converter with an envelope tracker and an RC circuit. The envelope tracker and the RC circuit are configured to generate an envelope-based biasing signal to bias a power amplifier and an envelope-based supply voltage to power the power amplifier.