By Topic

Circularly polarized broadband dual loop antenna fed by coplane stripline

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Xue-Xia Yang ; School of Comm. & Inf. Eng., Shanghai University, 200072 Shanghai, China ; Jian-Yong Zhou ; Yan-Yan Gao

A dual rhombic loop antenna with double parasitic loops to increase the bandwidth of circular polarization operation is proposed. The gap position of each loop controls the sense of circular polarization. The original dual rhombic loop radiates a CP wave at a lower frequency while the parasitic loop produces CP radiation at a higher frequency. A combination of the two frequencies leads to a bandwidth enhancement. A relative bandwidth of 23.7% (AR ¿ 2 dB) is simulated. For measuring, a balun from the coplanar stripline (CPS) to a microstrip line is designed. The balun has a little effect on the antenna. The measured AR, return loss and radiation patterns agree to the simulated results. The antenna achieves S11 (¿ 15 dB) bandwidth of 13.1%, AR (¿ 3 dB) bandwidth of 16.2% and gain of 11.5 dB.

Published in:

Radio-Frequency Integration Technology, 2009. RFIT 2009. IEEE International Symposium on

Date of Conference:

Jan. 9 2009-Dec. 11 2009