Patent ID: 6998918

Claim:
A power amplifier (PA) comprising: a PA output stage having a first amplifying portion having a first gain portion and disposed in parallel with a second amplifying portion having a second gain portion, the PA output stage having an output stage input port for receiving of a RF input signal, an output stage output port for providing of an amplified RF signal, and an output stage gain being the gain from the output stage input port to the output stage output port; a second RF power detector for detecting a signal power of the RF input signal and for providing a second detected signal based on the detected signal power; and, at least a biasing circuit for biasing the first amplifying portion and the second amplifying portion in dependence upon the second detected signal for amplifying the RF input signal such that for a same output stage gain the ratio between the first gain portion and the second gain portion varies in dependence upon the second detected signal.