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Journal of Zhejiang University SCIENCE C 1998 Vol.-1 No.-1 P.

http://doi.org/10.1631/FITEE.2200398


Stacked arrangement of SIW cavity-backed semicircle patches for wideband circular polarization with filtering effect


Author(s):  Yitong YAO, Gang DONG, Zhangming ZHU, Yintang YANG

Affiliation(s):  School of Microelectronics, Xidian University, Xi’ more

Corresponding email(s):   19111110564@stu.xidian.edu.cn, gdong@xidian.edu.cn, zhangmingzhu@xidian.edu.cn, ytyang@xidian.edu.cn

Key Words:  Circularly polarized, Filtering response, Patch antenna, Substrate integrated waveguide


Yitong YAO, Gang DONG, Zhangming ZHU, Yintang YANG. Stacked arrangement of SIW cavity-backed semicircle patches for wideband circular polarization with filtering effect[J]. Frontiers of Information Technology & Electronic Engineering, 1998, -1(-1): .

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Abstract: 
This article presents a novel broadband circularly polarized (CP) antenna with filtering effect for X-band and Ku-band satellite wireless communication. The structure comprises a driven layer (also a filtering layer) and a stacked layer (also a CP layer). The bandpass filtering response consists of two radiation nulls, which is the combined effect of a substrate integrated waveguide (SIW) cavity-backed aperture and embedded driven patch. The chamfered patch is introduced as the stacked component with the ability to achieve CP and widen the operating bandwidth. A prototype with compact size of 0.8 is fabricated using a multilayer PCB process for demonstration. Experimental results are in good agreement with the simulated results, and show that the measured −10-dB impedance bandwidth and 3-dB axial ratio (AR) bandwidth are 10.83% and 15.54%, respectively. In addition, a peak gainLHCP of 8.9 dBic, an average in-band gainLHCP > 7 dBic, and good frequency selectivity are obtained.

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