Broadrange Reflectarray Element with Combined Slot and Dielectric Resonator Resonances
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Date
2017-12
Authors
Lee, Shin-Rou
Lim, Eng-Hock
Lo, Fook-Loong
Tan, Kia-Hock
ORCID
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Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
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Abstract
This paper presents a dielectric resonator antenna (DRA) reflectarray unit element with multiple loading circular slots underneath in concentric form. The radii of the three slots are varied simultaneously to function as phase-shifting elements. For the case of three under-loading slots, it is very interesting to find out that the slot and DRA resonances can be pulled together to provide a very broad phase range of 916°. Study shows that the gradient and phase range of the S curve can be easily tuned by manipulating the dimensions of the under-loading slots. Waveguide method has been used to establish the simulation and measurement models. The reflection properties of the DRA unit elements loaded with different ring-shaped slots are compared, along with a complete parametric analysis. The proposed reflectarray unit element is very compact as its phase shifter can be entirely hidden beneath the DRA.
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Citation
Radioengineering. 2017 vol. 26, č. 4, s. 984-991. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2017/17_01_0984_0991.pdf
http://www.radioeng.cz/fulltexts/2017/17_01_0984_0991.pdf
Document type
Peer-reviewed
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Published version
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Language of document
en