DocumentCode
855648
Title
Design of N-way distributed Doherty amplifier for WCDMA and OFDM applications
Author
Cho, K.J. ; Kim, W.J. ; Stapleton, S.P. ; Kim, J.H. ; Lee, B. ; Choi, J.J. ; Kim, J.Y. ; Lee, J.C.
Author_Institution
Dept. of Radio & Sci. Eng., Kwangwoon Univ., Nowon-Gu Seoul
Volume
43
Issue
10
fYear
2007
Firstpage
577
Lastpage
578
Abstract
A novel three-way distributed Doherty power amplifier with an extended efficiency range for WCDMA or OFDM repeater or base-station applications is presented. This distributed Doherty amplifier consists of one main amplifier and two peaking amplifiers. To achieve high efficiency at a high back-off power, the peaking amplifier structure is based on the dual-fed distributed amplifier form. The 2140 MHz measured results of the three-way distributed Doherty amplifier yielded an 11 dB power gain, with 39.5% power added efficiency at 9.5 dB back-off power
Keywords
OFDM modulation; UHF power amplifiers; code division multiple access; distributed amplifiers; radio repeaters; 11 dB; 2140 MHz; N-way distributed Doherty amplifier; OFDM repeater; WCDMA repeater; back-off power; base-station applications; dual-fed distributed amplifier; orthogonal frequency division multiplexing; peaking amplifier structure; power added efficiency; three-way distributed power amplifier;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20070604
Filename
4202060
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