Patent ID: 9660688
Date: 2017-05-23
CPC Classifications: H03F,H04B

Claim:
1. A mobile device comprising: a power amplifier including an input configured to receive a radio frequency input signal and an output configured to provide an amplified radio frequency signal; a supply voltage biasing circuit electrically connected between the output of the power amplifier and a power high supply voltage; and an output matching circuit including a second-order harmonic series resonant circuit including a first capacitor and a first inductor electrically connected in series between the output of the power amplifier and a power low supply voltage, a second inductor electrically connected between the output of the power amplifier and a harmonic frequency grounding node, a second capacitor electrically connected between the output of the power amplifier and the power low supply voltage, and a third-order harmonic series resonant circuit including a third capacitor and a third inductor electrically connected in series between the harmonic frequency grounding node and the power low supply voltage.