Patent ID: 7576611

Claim:
An electronic power amplifier including a plurality of cells, each cell architecture comprising: a DC input port for accepting a DC input power from a voltage source V G , an AC input port for accepting an AC signal S 1 at a frequency F S and having a first magnitude M 1 , a switching mechanism operatively coupled to the DC input port and to the AC input port for converting the DC input power to an AC output power at the frequency F S and having a second magnitude M 2 greater than the first magnitude M 1 , and an output port capable of applying the AC output power to a load impedance; wherein the plurality of cells includes at least a first cell having a first DC input port and a second cell having a second DC input port, and the first and second DC input ports are connected in series for application to the voltage source V G ; and further wherein each power amplifier cell includes a reactive component having a capacitive impedance scaled by a factor N equal to the total number of power amplifier cells, such that the electronic power amplifier has a higher power density and a higher efficiency than a single cell electronic power amplifier comprising substantially the same cell architecture and configured to convert the DC input power from the voltage source V G to an AC output power at the frequency F S .