DocumentCode
3153167
Title
Signal pre-distortion and bandwidth requirements for sequential power amplifiers.
Author
Lehmann, T. ; Knoechel, R.
Author_Institution
University of Kiel, Germany
fYear
2010
fDate
23-28 May 2010
Firstpage
1
Lastpage
1
Abstract
This paper presents a linearization approach for Sequential Power Amplifiers (SPAs) through pre-distortion. The signal characteristics and pre-distortion waveforms for the main and peaking amplifiers are derived mathematically. The pre-distortion approach is validated experimentally by measurement of the reconstructed signals. It is found that the signal characteristics results in an at least three fold bandwidth of the signal. Rules for bandwidth restriction in the individual PA channels are given and the effect of a reduced bandwidth on the average efficiency of SPAs is shown.
Keywords
Bandwidth; Microwave amplifiers; Microwave circuits; Power amplifiers;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International
Conference_Location
Anaheim, CA
ISSN
0149-645X
Print_ISBN
978-1-4244-6056-4
Electronic_ISBN
0149-645X
Type
conf
DOI
10.1109/MWSYM.2010.5518093
Filename
5518093
Link To Document