Patent ID: 8818305

Claim:
A method for providing supply power to a power amplifier, the method comprising: initiating an envelope tracking (ET) mechanism to track changes in amplitudes of a radio frequency (RF) signal being received by the power amplifier; providing an instantaneous amplitude of the RF signal to a first configuration of a voltage controlled power converter from the ET mechanism; determining a bandwidth of the radio frequency (RF) signal; calculating an average amplitude of the RF signal; in response to at least one of (a) a RF signal bandwidth being at least equal to a threshold bandwidth and (b) the average amplitude of the RF signal being less than a threshold value: temporarily deactivating the ET mechanism; activating an average power tracking (APT) mechanism to trigger a power supply to provide power using the average amplitude of the RF signal; providing, to a second configuration of the voltage controlled power converter, an average amplitude of the RF signal; and providing to the power amplifier a power supply voltage having amplitude variations that are determined based on which tracking mechanism from among the ET mechanism and the APT mechanism is activated.