Dirk Wiegner
Alcatel-Lucent
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Publication
Featured researches published by Dirk Wiegner.
international microwave symposium | 2011
Simone Maier; Dirk Wiegner; M. Zierdt; U. Seyfried; Wolfgang Kuebart; C. Haslach; Andreas Pascht; Stephan Maroldt; R. Quay
The following paper presents a novel 900MHz pulse-width-modulated current-mode class-S power amplifier. The conversion from an analog to a digital signal, which can be handled by the subsequent switch-mode-stage, is implemented using a fast pulse-width-modulator. The complete class-S amplifier is characterized using clipped WCDMA signals with 5MHz and 80MHz bandwidth, respectively. For the 5MHz signal, the measured spectrum at the amplifiers output shows good EVM of < 12% (approx. 1.5% degradation assumed for class-S PA) and also meets the 3GPP ACLR requirements within 9dB input power range. The capability to support large signal bandwidths is demonstrated, using an 80MHz WCDMA signal, thus meeting the expectations on class-S amplifier for the first time with respect to signal bandwidth.
Archive | 2009
Gerhard Luz; Robin Machinal; Dirk Wiegner
Archive | 2010
Dirk Wiegner; Patrick Jüschke
Archive | 2006
Dirk Wiegner; Tobias Nass; Ulrich Seyfried
Archive | 2012
Wolfgang Templ; Dirk Wiegner
Archive | 2010
Dirk Wiegner; Wolfgang Templ
Archive | 2007
Ulrich Seyfried; Dirk Wiegner
Archive | 2005
Dirk Wiegner; Thomas Merk
Archive | 2015
Dirk Wiegner; Wolfgang Templ; Andreas Pascht
Archive | 2012
Dirk Wiegner; Wolfgang Templ
