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Pin-loaded circularly-polarised patch antenna with sharpened gain roll-off rate and widened 3-dB axial ratio beamwidth
Zhang, Xiao1,2; Zhu, Lei2; Liu, Neng-Wu3; Xie, Dan-Peng2
2018-07-04
Source PublicationIET MICROWAVES ANTENNAS & PROPAGATION
ISSN1751-8725
Volume12Issue:8Pages:1247-1254
Abstract

A circularly-polarised patch antenna with the loading of shorting pins is proposed in this study to sharpen the gain roll-off shape and widen the 3-dB axial ratio beamwidth (ARBW). First of all, it is theoretically revealed that when the electrical size of a circular patch radiator is appropriately constituted, the radiation gain at the horizon can be significantly suppressed and the axial ratio can be maintained below 3dB over a wide angular range. By introducing a set of metallic pins, which short the patch in a circular contour, the resonant frequency of the antenna will be increased. In this way, the patch radius with respect to wavelength can be freely chosen, so that sharp gain roll-off rate and wide ARBW can be simultaneously achieved. After the extensive analysis is executed, two circular patch antennas with and without loading of shorting pins are designed, fabricated and tested for comparison. Simulated and measured results show that the gain roll-off is enhanced up to near 20dB and 3-dB ARBW is extended to around 140 degrees so as to effectively reduce the undesired multipath interference as highly demanded in the application of global navigation satellite system.

KeywordMicrostrip Antennas Electromagnetic Wave Polarisation Antenna Radiation Patterns Satellite Navigation Interference Suppression Pin-loaded Circularly-polarised Patch Antenna Sharpened Gain Roll-off Rate Widened Axial Ratio Beamwidth Shorting Pin Loading Gain Roll-off Shape Electrical Size Circular Patch Radiator Radiation Gain Metallic Pins Circular Contour Sharp Gain Roll-off Rate Circular Patch Antennas Undesired Multipath Interference Global Navigation Satellite System
DOIhttps://doi.org/10.1049/iet-map.2017.0970
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Telecommunications
WOS SubjectEngineering, Electrical & Electronic ; Telecommunications
WOS IDWOS:000434991400001
PublisherINST ENGINEERING TECHNOLOGY-IET
The Source to ArticleWOS
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.ATR National Key Laboratory of Defense Technology, College of Information Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China
2.Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, People's Republic of China
3.Science and Technology on Antenna and Microwave Laboratory, Xidian University, Shaanxi 710071, People's Republic of China
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Zhang, Xiao,Zhu, Lei,Liu, Neng-Wu,et al. Pin-loaded circularly-polarised patch antenna with sharpened gain roll-off rate and widened 3-dB axial ratio beamwidth[J]. IET MICROWAVES ANTENNAS & PROPAGATION,2018,12(8):1247-1254.
APA Zhang, Xiao,Zhu, Lei,Liu, Neng-Wu,&Xie, Dan-Peng.(2018).Pin-loaded circularly-polarised patch antenna with sharpened gain roll-off rate and widened 3-dB axial ratio beamwidth.IET MICROWAVES ANTENNAS & PROPAGATION,12(8),1247-1254.
MLA Zhang, Xiao,et al."Pin-loaded circularly-polarised patch antenna with sharpened gain roll-off rate and widened 3-dB axial ratio beamwidth".IET MICROWAVES ANTENNAS & PROPAGATION 12.8(2018):1247-1254.
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