A study on efficiency improvement of doherty amplifier using LDMOS FET for WiMax networks

Authors:
Hyukyong Kwon;Chae up Yoo;Min-su Kim;Younggoo Yang
Affiliations:
Department of Mobile Communications Engineering, Sungkyunkwan University, Suwon City, Republic of Korea;Department of Mobile Communications Engineering, Sungkyunkwan University, Suwon City, Republic of Korea;GSlnstruments Co., Ltd, Incheon City, Republic of Korea;Department of Mobile Communications Engineering, Sungkyunkwan University, Suwon City, Republic of Korea
Venue:
ICACT'09 Proceedings of the 11th international conference on Advanced Communication Technology - Volume 2
Year:
2009

Citing 2
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Abstract

This paper describes Doherty technology, which has been used in design ofWiMax power amplifier to improve its high efficiency and linearity. Doherty amplifier's efficiency compare to AD Class power amplifier, 2-way LDMOS FET (2pcs) has been applied. The results have showed that Doherty amplifier has 10% higher efficiency compare to usual AD Class power amplifier.