DocumentCode
1388794
Title
A Saturated Doherty Power Amplifier Based On Saturated Amplifier
Author
Kim, Jangheon ; Son, Junghwan ; Moon, Junghwan ; Kim, Bumman
Author_Institution
Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada
Volume
20
Issue
2
fYear
2010
Firstpage
109
Lastpage
111
Abstract
A saturated Doherty power amplifier (PA) based on the saturated PA tuned by the self-generated harmonic currents is presented. When driven with mobile WiMAX 1FA signal, this Doherty PA demonstrates high efficiency performance (average 57%) over the WiMAX band from 2.5 GHz to 2.7 GHz. Simulated and experimental results allow the evaluation for the load modulation behavior of the saturated PA and bandwidth correlation between the Doherty and saturated unit PAs. The linearity requirement of the WiMAX signal is met using the digital feedback predistortion linearization technique.
Keywords
WiMax; linearisation techniques; microwave amplifiers; power amplifiers; bandwidth 2.5 GHz to 2.7 GHz; digital feedback predistortion linearization technique; mobile WiMAX 1FA signal; saturated Doherty power amplifier; self-generated harmonic currents; Doherty amplifier; efficiency; linearity; power amplifier (PA); predistortion (PD); worldwide interoperability for microwave access (WiMAX);
fLanguage
English
Journal_Title
Microwave and Wireless Components Letters, IEEE
Publisher
ieee
ISSN
1531-1309
Type
jour
DOI
10.1109/LMWC.2009.2038554
Filename
5393007
Link To Document