Title :
A highly efficient 1.95-GHz, 18-W asymmetric multilevel outphasing transmitter for wideband applications
Author :
Godoy, P.A. ; Chung, Shi-Uk ; Barton, Taylor W. ; Perreault, David J. ; Dawson, Joel L.
Author_Institution :
MIT, Cambridge, United States
Abstract :
Summary form only given, as follows. A 1.95-GHz asymmetric multilevel outphasing (AMO) transmitter (TX) with class-E GaN PAs and discrete supply modulators is presented. A 4-level supply modulator is implemented for fast and efficient discrete envelope modulation with up to 28-V supply voltages. The AMO TX delivers 42.6-dBm peak output power with 62.5% PAE. For a 16-QAM signal at 36-dBm output power, the TX achieves 44.2/42.8/41.4% average system efficiency and 2.0/2.1/3.1% EVM for 10/20/40-MHz channel bandwidth, respectively.
Conference_Titel :
Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-61284-754-2
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2011.5973440
