Dual-Band Circularly Polarized Antenna With Wide Axial Ratio Beamwidths for Upper Hemispherical Coverage

Yu-Xiang Sun; Kwok Wa Leung; Jian Ren

doi:10.1109/ACCESS.2018.2875029

IEEE Access (Jan 2018)

Dual-Band Circularly Polarized Antenna With Wide Axial Ratio Beamwidths for Upper Hemispherical Coverage

Yu-Xiang Sun,
Kwok Wa Leung,
Jian Ren

Affiliations

Yu-Xiang Sun: ORCiD; Department of Electronic Engineering, The State Key Laboratory of Millimeter Waves, City University of Hong Kong, Hong Kong
Kwok Wa Leung: Department of Electronic Engineering, The State Key Laboratory of Millimeter Waves, City University of Hong Kong, Hong Kong
Jian Ren: ORCiD; Department of Electronic Engineering, The State Key Laboratory of Millimeter Waves, City University of Hong Kong, Hong Kong

DOI: https://doi.org/10.1109/ACCESS.2018.2875029
Journal volume & issue: Vol. 6
pp. 58132 – 58138

Abstract

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This paper presents a dual-band circularly polarized cross-dipole antenna with wide axial ratio beamwidths for full upper hemispherical coverage for GPS L1 and L2 bands. The antenna has curved radiating arms and a corrugated back cavity to enhance the beamwidth. A wideband hybrid coupler is used to feed the antenna at the two nearby frequency bands. Experimental results show that very wide 3-dB AR beamwidths of over 200° can be obtained, fully covering the upper hemisphere for the two GPS bands.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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