Title :
A power re-use technique for improved efficiency of outphasing microwave power amplifiers
Author :
Langridge, Robert ; Thornton, Todd ; Asbeck, Peter M. ; Larson, Lawrence E.
Author_Institution :
Center for Wireless Commun., California Univ., San Diego, La Jolla, CA, USA
fDate :
8/1/1999 12:00:00 AM
Abstract :
An improved power re-use technique is introduced for application to outphased microwave power amplifiers. The technique allows a significant portion of the wasted out-of-phase components of the signal to be returned to the power supply, resulting in substantial improvements in overall power-amplifier efficiency. A peak re-use RF-to-DC efficiency of 63% was obtained at 1.96 GHz
Keywords :
UHF power amplifiers; microwave power amplifiers; power combiners; 1.96 GHz; 63 percent; efficiency improvement; out-of-phase components; outphased microwave power amplifiers; power re-use technique; power-amplifier efficiency; Circuits; Image converters; Microwave amplifiers; Microwave theory and techniques; Power amplifiers; Power supplies; Quadrature amplitude modulation; Schottky diodes; Signal resolution; Wireless communication;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
