Power management circuit

Abstract

A power management circuit is provided. Herein, a transceiver circuit is configured to generate a modulated differential signal that includes information related to a time-variant amplitude of a radio frequency (RF) signal. Accordingly, a power management integrated circuit (PMIC) can generate a modulated voltage, a modulated phase correction voltage, and a modulated amplitude correction voltage based on the modulated differential signal. The modulated voltage is provided to a power amplifier circuit for amplifying the RF signal, and the modulated phase correction voltage and the modulated amplitude correction voltage are provided to a power amplifier circuit to cause phase and amplitude adjustment in the RF signal. By performing phase and amplitude adjustment in the RF signal, it is possible to ensure proper aliment between the modulated voltage and the time-variant amplitude of the RF signal to thereby avoid potential distortion in the RF signal.

Dependencies are inferred from the claim text.