Patent ID: 7728663

Claim:
A circuit comprising: a charge storage component; an amplifier voltage supply port for supplying voltage to an RF amplifier; a first voltage supply input port for receiving a first voltage; at least one detector electrically connected to an output port of the RF amplifier, the at least one detector for detecting an amplitude of an RF output signal provided from the RF amplifier and for providing a first indicator signal while the amplitude is below a first threshold amplitude, and for providing a second indicator signal while the amplitude is above a second threshold amplitude and wherein the second indicator signal varies with a magnitude of the amplitude, wherein the first threshold amplitude is less than the second threshold amplitude; and, at least a switch responsive to the first indicator signal for switching into a first mode of operation in which the at least a switch is for charging of the charge storage component and for providing the first voltage to the amplifier voltage supply port and responsive to the second indicator signal for switching into a second mode of operation in which the at least a switch is for providing a boost voltage at the amplifier voltage supply port in excess of the first voltage with use of a magnitude of the second indicator signal, the boost voltage resulting from the summation of a voltage across the charge storage component and the first voltage and following the amplitude of the RF output signal.