Title :
Advanced switch-mode concepts using GaN: The class-S amplifier
Author :
Heinrich, Wolfgang ; Wentzel, Andreas ; Meliani, Chafik
Author_Institution :
Ferdinand-Braun-Inst. (FBH), Berlin, Germany
Abstract :
Efficiency of power amplifiers for the wireless infrastructure is presently a hot topic. Switch-mode type amplifiers and/or more complex concepts, e.g. Doherty or envelope tracking (ET) are being explored intensively, exploiting the potential of GaN technology. This paper contributes recent results on a related approach, the class-S concept, which offers also compatibility with digital baseband processing. Its potential is evaluated based on realizations for the 450 MHz frequency band with GaN MMICs.
Keywords :
Band pass filters; Circuit topology; Delta modulation; Digital modulation; Energy consumption; Gallium nitride; OFDM modulation; Power amplifiers; Power harmonic filters; Voltage; GaN-MMIC; class S; power amplifier;
Conference_Titel :
Microwave Radar and Wireless Communications (MIKON), 2010 18th International Conference on
Conference_Location :
Vilnius, Lithuania
Print_ISBN :
978-1-4244-5288-0
