Residential College | false |
Status | 已發表Published |
A low-profile wide-beamwidth circularly-polarized antenna via two pairs of parallel dipoles in a square contour | |
Yu Luo1; Qing-Xin Chu1; Lei Zhu2 | |
2015 | |
Source Publication | IEEE Transactions on Antennas and Propagation |
ISSN | 0018-926X |
Volume | 63Issue:3Pages:931-936 |
Abstract | A circularly polarized antenna with wide axial-ratio beamwidth is presented by placing two pairs of parallel dipoles in a square contour. Firstly, our study demonstrates that circular polarization can be achieved at the broadside by setting a 90° phase difference between the vertical and horizontal paired-dipoles. Secondly, the principle of wide-beamwidth circularly-polarized radiation is described under the similarity in polar and azimuthal radiation pattern for a pair of parallel dipoles. After the spacing between two parallel dipoles is studied, the similar radiation patterns in these two orthogonal planes are derived. As such, a wide-beamwidth circular polarization can be achieved by placing the two pairs of parallel dipoles vertically and horizontally while setting a 90° phase difference between them. In final, a circularly-polarized printed antenna is designed and fabricated on a single dielectric substrate. The two arms of its four dipoles are formed on the lower and upper interfaces of the substrate, and they are excited by a 1-to-4 probe-to-microstrip feeding network. Experimental results show good agreement with simulated ones in terms of radiation pattern/gain, axial ratio and returned loss. In particular, the 3-dB axial ratio beamwidth at the central frequency of 1.6 GHz has extended to 126° in an angular range from-63° to +63°. The fabricated antenna exhibits a low-profile property with the height of 0.0043 free-space wavelength. © 2015 IEEE. |
Keyword | Axial Ratio Circularly Polarized Antenna Dipoles Microstrip-line Feeder Wide Beamwidth |
DOI | 10.1109/TAP.2014.2387438 |
URL | View the original |
Indexed By | SCIE |
Language | 英語English |
WOS Research Area | Engineering ; Telecommunications |
WOS Subject | Engineering, Electrical & Electronic, Telecommunications |
WOS ID | WOS:000351087800006 |
The Source to Article | Scopus |
Scopus ID | 2-s2.0-84924561356 |
Fulltext Access | |
Citation statistics | |
Document Type | Journal article |
Collection | DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING |
Affiliation | 1.School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China 2.Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, China |
Recommended Citation GB/T 7714 | Yu Luo,Qing-Xin Chu,Lei Zhu. A low-profile wide-beamwidth circularly-polarized antenna via two pairs of parallel dipoles in a square contour[J]. IEEE Transactions on Antennas and Propagation, 2015, 63(3), 931-936. |
APA | Yu Luo., Qing-Xin Chu., & Lei Zhu (2015). A low-profile wide-beamwidth circularly-polarized antenna via two pairs of parallel dipoles in a square contour. IEEE Transactions on Antennas and Propagation, 63(3), 931-936. |
MLA | Yu Luo,et al."A low-profile wide-beamwidth circularly-polarized antenna via two pairs of parallel dipoles in a square contour".IEEE Transactions on Antennas and Propagation 63.3(2015):931-936. |
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