Patent ID: 7764120

Claim:
A power amplifier circuit, comprising: a power splitter configured to split an input signal into a plurality of component input signals, wherein the power splitter comprises a first stage splitter that splits the input signal into at least two first stage component output signals and at least two second stage splitters that each split at least one of the first stage component output signals into at least two second stage component output signals, and the first stage splitter is on a dielectric material having a first dielectric constant and the at least two second stage slitters are on another dielectric material having a second dielectric constant that is different than the first dielectric constant; at least two sets of transistor amplifiers that are connected to the power splitter to receive and amplify different ones of the second stage component output signals to generate amplified component output signals; and a combiner configured to receive and combine the amplified component output signals from the at least two sets of transistor amplifiers into an output signal.