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Circularly-polarized cavity-backed slot antenna array with simplified feeding structure
Chen, Rui Sen1; Zhu, Lei2; Wong, Sai Wai3; Yu, Xu Zhou3; Lin, Jing Yu4; Li, Yin3; He, Yejun3
2021-10-01
Source PublicationInternational Journal of RF and Microwave Computer-Aided Engineering
ISSN1096-4290
Volume31Issue:10
Abstract

A class of circularly-polarized cavity-backed slot antenna arrays with simplified feeding structure are proposed. Power dividing network is an essential feeding structure for the design of conventional antenna arrays, which results in complicated antenna structure. A novel feeding technique based on the electric field of cavity modes is introduced to feed the array elements. The slots on the top wall are directly fed by the electric field without additional feeding structure. Crossed slots with different lengths are introduced to achieve the self-phased CP radiation as they produce different perturbation on the two degenerate cavity modes. Therefore, high efficiency and simple antenna structure of the CP slot antenna array are achieved. Then, two CP slot arrays with 3 × 3 and 8 × 8 elements are presented to show the designed feasibility. Finally, the 3 × 3 CP antenna array is fabricated and measured to validate the design concept, which can achieve 12.6 dBic gain, 94% total efficiency, 80% aperture efficiency, and −25 dB cross polarization.

KeywordCavity-backed Slot Antenna Arrays Circularly-polarized Crossed Slots High Efficiency Simplified Feeding Structure
DOI10.1002/mmce.22859
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Interdisciplinary Applications ; Engineering, Electrical & Electronic
WOS IDWOS:000680495000001
Scopus ID2-s2.0-85111857263
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorWong, Sai Wai
Affiliation1.School of AI-Guangdong & Taiwan, Foshan University, Foshan, China
2.Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macao
3.College of Electronics and Information Engineering, Shenzhen University, Shenzhen, China
4.School of Electrical and Data Engineering, University of Technology Sydney, Ultimo, Australia
Recommended Citation
GB/T 7714
Chen, Rui Sen,Zhu, Lei,Wong, Sai Wai,et al. Circularly-polarized cavity-backed slot antenna array with simplified feeding structure[J]. International Journal of RF and Microwave Computer-Aided Engineering,2021,31(10).
APA Chen, Rui Sen,Zhu, Lei,Wong, Sai Wai,Yu, Xu Zhou,Lin, Jing Yu,Li, Yin,&He, Yejun.(2021).Circularly-polarized cavity-backed slot antenna array with simplified feeding structure.International Journal of RF and Microwave Computer-Aided Engineering,31(10).
MLA Chen, Rui Sen,et al."Circularly-polarized cavity-backed slot antenna array with simplified feeding structure".International Journal of RF and Microwave Computer-Aided Engineering 31.10(2021).
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