DocumentCode
49674
Title
Wideband patch directional coupler based on non-uniform mushroom structure
Author
Xin Yu Zhou ; Shao Yong Zheng ; Xing Yu Pu ; Wing Shing Chan ; Yunliang Long
Author_Institution
Dept. of Electron. & Commun. Eng., Sun Yat-sen Univ., Guangzhou, China
Volume
51
Issue
3
fYear
2015
fDate
2 5 2015
Firstpage
262
Lastpage
264
Abstract
A wideband patch directional coupler is proposed. The coupler is designed based on the non-uniform mushroom structure with unique characteristics. The current distribution within the patch can be controlled by the mushroom cells underneath for wideband property. An 8 dB directional coupler has been designed, fabricated and measured for verification. It exhibits good return loss, small coupling coefficient variation and quadrature phase difference among the output ports over a wide bandwidth of 74.6% centred at 8.45 GHz.
Keywords
directional couplers; coupling coefficient variation; current distribution; frequency 8.45 GHz; gain 8 dB; mushroom cells; nonuniform mushroom structure; quadrature phase difference; unique characteristics; wideband patch directional coupler;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2014.4050
Filename
7029819
Link To Document