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Co-linear polarization decoupling of two feeding ports in a single patch antenna without radiation patterns deterioration
Hui Deng; Lei Zhu; Neng-Wu Liu; Jiang-Feng Lin
2022-02
Source PublicationInternational Journal of RF and Microwave Computer-Aided Engineering
ISSN1096-4290
Volume32Issue:2
Abstract

In this paper, a novel decoupling scheme is proposed to suppress the mutual coupling between the two ports of a single patch antenna (SPA), while maintaining the radiation properties of each port with co-linear polarization, co-radiating aperture, and broadside radiation patterns without deterioration in gain. For this purpose, a pair of λ/4 nonradiative stubs are introduced and loaded symmetrically in the SPA. Thanks to the good feature that the nulls of the composite fields of TM and TM modes are present only near the coupled port, both radiating apertures of the SPA can operate simultaneously. Moreover, the decoupling principle, equivalent transmission-line models, and design guidelines are extensively illustrated. The measured results show that each port of the SPA has a broadside radiation pattern with co-linear polarization and about 7-dBi gain under isolation improvement. As such, this two-port SPA, with the size of 0.41*0.37*0.04*λ, can be equivalent to a two-patch antenna array with 0 edge-to-edge distance. Most importantly, the proposed decoupling method is achieved without compromise in the three degrees of freedom (i.e., co-polarization, similar radiation pattern, and co-radiating aperture), which is a tough challenge nowadays. This decoupling approach allows the two-port SPA could be an alternative solution in MIMO systems or in-band full-duplex systems.

KeywordCo-radiating Aperture Microstrip Patch Antenna Mutual Coupling Port-to-port Decoupling Radiation Pattern Two Feeding Ports
DOI10.1002/mmce.22973
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Interdisciplinary Applications ; Engineering, Electrical & Electronic
WOS IDWOS:000717847000001
Scopus ID2-s2.0-85118945399
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorLei Zhu
AffiliationDepartment of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macao
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Hui Deng,Lei Zhu,Neng-Wu Liu,et al. Co-linear polarization decoupling of two feeding ports in a single patch antenna without radiation patterns deterioration[J]. International Journal of RF and Microwave Computer-Aided Engineering,2022,32(2).
APA Hui Deng,Lei Zhu,Neng-Wu Liu,&Jiang-Feng Lin.(2022).Co-linear polarization decoupling of two feeding ports in a single patch antenna without radiation patterns deterioration.International Journal of RF and Microwave Computer-Aided Engineering,32(2).
MLA Hui Deng,et al."Co-linear polarization decoupling of two feeding ports in a single patch antenna without radiation patterns deterioration".International Journal of RF and Microwave Computer-Aided Engineering 32.2(2022).
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