DocumentCode
1460748
Title
Four square loops antenna for circular polarisation and gain enhancement
Author
Yang, Qingxiong ; Zhang, Xiaobing ; Bai, Xiaoqing ; Wang, Nan ; Wang, Yannan ; Li, Jie ; Zhao, Xingang
Author_Institution
Nat. Key Lab. of Sci. & Technol. on Antennas & Microwaves, Xidian Univ., Xi´an, China
Volume
46
Issue
7
fYear
2010
Firstpage
475
Lastpage
477
Abstract
A four square loops antenna above a finite ground plane is investigated for circular polarisation and gain enhancement. By choosing proper perimeters of the two pairs of loops, the axial ratio (??3 dB) bandwidth can reach 16%. It is demonstrated that a new pair of loops added to the original dual-loop can increase the gain to 11.6 dBic. A broadband balun is incorporated for impedance matching. The antenna performance is confirmed by experimental results.
Keywords
baluns; electromagnetic wave polarisation; impedance matching; loop antennas; axial ratio bandwidth; circular polarisation; finite ground plane; gain enhancement; impedance matching; square loop antenna;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2010.2980
Filename
5442099
Link To Document