Title :
VHF Doherty amplifier with GaN FETs and independent drive-signal control
Author :
Beltran, Ramon A. ; Raab, F.H.
Author_Institution :
RFMD, Hiawatha, United States
Abstract :
Summary form only given, as follows. A VHF Doherty amplifier with independent drive-signal control is presented. An I-Q modulator/up-converter is used to produce the driving signals at a carrier frequency of 144-MHz. The amplifiers of the Doherty transmitter are designed using GaN FETs and lumped-element networks. The carrier amplifier operates in class-B with a drain efficiency of 63% while the peaking amplifier operates in class-C with an efficiency of 73%.
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.2011.5973556
