Title :
900 MHz pulse-width-modulated class-S power amplifier with improved linearity
Author :
Maier, Stefan ; Wiegner, D. ; Zierdt, M. ; Seyfried, U. ; Kuebart, W. ; Haslach, Christoph ; Pascht, Andreas ; Maroldt, S. ; Quay, Ruediger
Author_Institution :
Alcatel-Lucent, Stuttgart, Germany
Abstract :
Summary form only given, as follows. This paper presents a novel 900 MHz pulse-width-modulated current-mode class S power amplifier (PA). The complete class-S amplifier is characterized using clipped WCDMA signals. For the 5 MHz signal, the measured spectrum at the amplifier´s output shows good EVM of 12% (approx. 1.5% degradation assumed for class-S PA) and also meets the 3rd Generation Partnership Project adjacent channel leakage ratio (3GPP ACLR) requirements within 9 dB input power range. The capability to support large signal bandwidths is demonstrated, using an 80 MHz WCDMA signal.
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.2011.5973436
