Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/121584
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Type: Journal article
Title: Horizontally polarized 360° beam-steerable frequency-reconfigurable antenna
Other Titles: Horizontally polarized 360 degrees beam-steerable frequency-reconfigurable antenna
Author: Gao, W.
Chen, S.
Withayachumnankul, W.
Fumeaux, C.
Citation: IEEE Transactions on Antennas and Propagation, 2019; 67(8):5231-5242
Publisher: IEEE
Issue Date: 2019
ISSN: 0018-926X
1558-2221
Statement of
Responsibility: 
Weijie Gao, Shengjian Jammy Chen, Withawat Withayachumnankul, Christophe Fumeaux
Abstract: In this paper, a 360⁰ beam-steerable frequencyreconfigurable antenna with horizontal polarization is proposed. The antenna is based on an Alford loop and a parasitic circular array of tunable electric-LC (ELC) resonators. It is able to operate in either omnidirectional or directional mode allowing 360⁰ beamsteering in the azimuth plane with an angular resolution of 18⁰. The frequency-tunable range is from 2.0 to 2.4 GHz (18.2% relative bandwidth). By introducing a 3-D printed dielectric lens radome and two plates with radial Vivaldi-shaped slots, the realized gain and front-to-back ratio (FBR) can be increased. The experimental characterization of an antenna prototype validates the design. The measured realized gain ranges from 6.2 to 8.2 dBi, and FBR is between 13 and 23 dB.
Keywords: Alford loop; beamsteering; frequency reconfigurable antenna; horizontally polarized antenna
Rights: © 2019 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
DOI: 10.1109/TAP.2019.2916612
Grant ID: http://purl.org/au-research/grants/arc/DP160103039
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Electrical and Electronic Engineering publications

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