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International Journal of Antennas and Propagation
Volume 2017 (2017), Article ID 3859206, 10 pages
Research Article

Broadband Circular Polarizer Based on Plasmon Hybridizations

1School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, China
3School of Telecommunication and Information Engineering, Xi’an University of Posts and Telecommunications, Xi’an 710061, China
4Beijing Center for Mathematics and Information Interdisciplinary Science (BCMIIS), Beijing 100048, China

Correspondence should be addressed to An-Xue Zhang

Received 5 January 2017; Revised 11 February 2017; Accepted 20 February 2017; Published 7 March 2017

Academic Editor: Vincenzo Galdi

Copyright © 2017 Hong-Yu Shi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper presents a broadband circular polarizer with a ring/disk cavity structure, which is a broadband application of plasmon hybridizations. The proposed design can convert a linearly polarized wave to a circularly polarized wave from 12.66 GHz to 17.43 GHz within a bandwidth of 30%. The broadband polarization conversion characterization results from the different plasmon hybridization modes induced in the ring/disk cavity. The proposed broadband circular polarizer is demonstrated by both full-wave simulation and measurement.