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A printed wide-beamwidth circularly polarized antenna via two pairs of radiating slots placed in a square contour
Liu, Neng-Wu; Zhu, Lei; Choi, Wai-Wa
2017-04
Source PublicationINTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES
ISSN1759-0787
Volume9Issue:3Pages:649-656
Abstract

A low-profile circularly polarized (CP) slot antenna to achieve a wide axial-ratio (AR) beamwidth is proposed in this paper. The radiating patch consists of two orthogonal pairs of parallel slots etched symmetrically onto a ground plane. Firstly, our theoretical study demonstrates that the CP radiation can be satisfactorily achieved at the broadside, when the vertical and horizontal paired-slots are excited in the same amplitude with 90 degrees phase difference. Secondly, the principle of CP radiation of the proposed antenna on an infinite ground plane is described. Through analyzing the spacing between two parallel slots, the vertical bar E-theta vertical bar and vertical bar E-phi vertical bar radiation patterns can be made approximately identical with each other over a large angle range. As such, the slot antenna achieves a wide AR beamwidth. After that, the 3 dB AR beamwidth with respect to the size of a finite ground plane is investigated to constitute a practical CP antenna on a finite ground plane. In final, the proposed CP antenna with a 1-4 probe-to-microstrip feeding network is designed and fabricated on a finite ground plane of a dielectric substrate. Measured results are shown to be in good agreement with the simulated ones about the gain, reflection coefficient, AR bandwidth, and radiation patterns. Most importantly, a wide 3 dB AR beamwidth of 1268 and low-profile property with the height of 0.036 lambda(0) are achieved.

KeywordAntenna Design Modeling And Measurements Antennas And Propagation For Wireless Systems Wide-beamwidth Cp Antenna
DOI10.1017/S1759078716000246
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Telecommunications
WOS SubjectEngineering, Electrical & Electronic ; Telecommunications
WOS IDWOS:000396191000021
PublisherCAMBRIDGE UNIV PRESS
The Source to ArticleWOS
Fulltext Access
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
AffiliationDepartment of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, University of Macau, Macau SAR, China
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Liu, Neng-Wu,Zhu, Lei,Choi, Wai-Wa. A printed wide-beamwidth circularly polarized antenna via two pairs of radiating slots placed in a square contour[J]. INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES,2017,9(3):649-656.
APA Liu, Neng-Wu,Zhu, Lei,&Choi, Wai-Wa.(2017).A printed wide-beamwidth circularly polarized antenna via two pairs of radiating slots placed in a square contour.INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES,9(3),649-656.
MLA Liu, Neng-Wu,et al."A printed wide-beamwidth circularly polarized antenna via two pairs of radiating slots placed in a square contour".INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES 9.3(2017):649-656.
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