Daniel Diaz, Miroslav Vasic, Óscar García, Jesús A. Oliver, Pedro Alou, Roberto Prieto, José A. Cobos. Three-Level Cell Topology for a Multilevel Power Supply to Achieve High Efficiency Envelope Amplifier. IEEE Trans. on Circuits and Systems, 59-I(9):2147-2160, 2012. [doi]
Abstract is missing.