DocumentCode
1303014
Title
Inverted asymmetric Doherty power amplifier driven by two-stage symmetric Doherty amplifier
Author
Chun, S.H. ; Jang, D.H. ; Kim, Jin Young ; Kim, Ji H.
Author_Institution
Dept. of Radio Sci. & Eng., Kwangwoon Univ., Seoul, South Korea
Volume
46
Issue
17
fYear
2010
Firstpage
1208
Lastpage
1209
Abstract
A new high efficiency Doherty structure for code division multiple access 2000 1 × 3-FA test signal is presented. The proposed Doherty structure consists of a two-stage symmetric Doherty drive amplifier and an inverted asymmetric Doherty power amplifier. This Doherty structure can improve the efficiency characteristic and reduce the amplifier´s dimensions. Also, higher-order intermodulation distortion products can be self-compensated. For demonstration of the amplifier´s performance, a 74 W Doherty amplifier has been simulated and measured.
Keywords
code division multiple access; intermodulation distortion; power amplifiers; Doherty structure; code division multiple access; higher-order intermodulation distortion products; inverted asymmetric Doherty power amplifier; two-stage symmetric Doherty drive amplifier;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2010.1708
Filename
5556092
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