Three-Level Cell Topology for a Multilevel Power Supply to Achieve High Efficiency Envelope Amplifier.
Daniel DiazMiroslav VasicÓscar GarcíaJesús Ángel OliverPedro AlouRoberto PrietoJosé A. CobosPublished in: IEEE Trans. Circuits Syst. I Regul. Pap. (2012)