SYSTEM AND METHOD FOR A MULTI-BAND POWER-AMPLIFIER

摘要

A method and RF power amplifiers of amplifying a plurality of frequency bands are disclosed. The method comprises: amplifying a first frequency band and a second frequency band with a main amplifier; amplifying the first frequency band with a first peaking amplifier; amplifying the second frequency band with a second peaking amplifier; and simultaneously load modulating a load impedance of the main amplifier in the first frequency band with an output of the first peaking amplifier and the load impedance of the main amplifier in the second frequency band with an output of the second peaking amplifier.