Patent ID: 8130043
Filing Date: 2012-03-06
Classification: H03F,H04B

Abstract:
1. A power amplifier comprising: a first amplifier stage; an output impedance matching network connecting an output of the first amplifier stage to an output of the power amplifier; a second amplifier stage; a first interstage impedance matching network connecting an output of the second amplifier stage to the output of the first amplifier stage; and a first interstage switch connected in series with the first interstage impedance matching network and located between the output of the first amplifier stage and the first interstage impedance matching network, wherein the output impedance matching network optimizes power transfer from the output of the first amplifier stage to the output of the power amplifier and the first interstage impedance matching network in series with the output impedance matching network optimizes power transfer from the output of the second amplifier stage to the output of the power amplifier.