Patent ID: RE42448

Claim:
A switched-mode power amplifier configured for integrally amplifying and combining a plurality of analog phase modulated signals input thereto, said amplifier comprising: (a) an input component for each of said plurality of analog phase modulated input signals wherein each said input component comprises at least one active device configured to be alternately switched by an analog phase modulated input signal to present an amplified signal corresponding to said analog phase modulated input signal, said amplified signal constituting a low output impedance voltage source; (b) an output resonator component; and , (c) an impedance inverter between each said input component and said resonator component, said impedance inverter configured for transforming said low output impedance voltage source to a high output impedance current source, wherein said high output impedance sources are combined in parallel before being passed to said resonator component; wherein said impedance inverter comprises a lumped element equivalent component to a quarter-wavelength transmission line : ; wherein said lumped element equivalent component comprises two or more of a series inductor, a series negative inductor, a shunt-to-ground inductor, a shunt-to-ground negative inductor, a series capacitor, a series negative capacitor, a shunt-to-ground capacitor, and a shunt-to-ground negative capacitor.