Patent ID: 6760604
Filing Date: 2004-07-06
Classification: H03F,H04B

Abstract:
A method of controlling power in a transceiver of a mobile communication device, comprising:providing a radio frequency power amplifier (RFPA) for amplifying a signal to be transmitted having a transmit signal envelope, the RFPA having an RFPA power demand corresponding to the transmit signal envelope; providing an audio power amplifier for amplifying a received audio signal having an audio signal envelope, the audio power amplifier having an audio power amplifier power demand corresponding with the audio signal envelope; providing a shared power regulator having a voltage output coupled to both the RFPA and the audio power amplifier, and for providing a supply voltage level at the voltage output; controlling the supply voltage level in correspondence with the RFPA power demand when only the RFPA is on; controlling the supply voltage level in correspondence with the audio power amplifier power demand when only the audio power amplifier is on; and controlling the supply voltage level to a level sufficient to meet both the RFPA power demand and audio power amplifier power demand when both the RFPA and audio power amplifier are on.