Title :
Efficient LDMOS device operation for envelope tracking amplifiers through second harmonic manipulation
Author :
Alavi, Morteza S. ; van Rijs, F. ; Marchetti, Mirco ; Squillante, M. ; Zhang, Tianzhu ; Theeuwen, S.J. ; Volokhine, Y. ; Jos, R.H. ; van der Heijden, Mark P. ; Acar, Mustafa ; de Vreede, L.C.
Author_Institution :
Delft University of Technology, Netherlands
Abstract :
Summary form only given, as follows. In this work efficient LDMOS device operation for envelope tracking amplifier systems is discussed. We introduce a “hybrid” combination of class- J* and class-B device operation, which yields improved efficiency at low supply voltages in power back-off, while avoiding device breakdown when operating at high supply voltages. Using these techniques with a Gen7 NXP 2W LDMOS device in a load-pull test bench, more than 63% drain efficiency over a 10dB power back-off range is achieved at 2.14GHz.
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.2011.5973381
