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Planar metamaterial-based beam-scanning broadband microwave antenna

Abstract : The broadband directive emission from the use of waveguided metamaterials is numerically and experimentally reported. The metamaterials, which are composed of non-resonant circular complementary closed ring structures printed on a dielectric substrate, are designed to obey the refractive index of a Luneburg lens. An arc array of planar radiating slot antennas placed at the periphery of the lens is used as wave launchers. A prototype of the lens associated with the feed structures has been fabricated using standard lithography techniques. To experimentally demonstrate the broadband focusing properties and directive emissions, far-field radiation patterns have been measured. Furthermore, this metamaterial-based lens can be used to achieve beam-scanning with a coverage of up to 120 degrees. Far-field measurements agree qualitatively with calculated near-field distributions. (C) 2014 AIP Publishing LLC.
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https://hal-univ-paris10.archives-ouvertes.fr/hal-01422967
Contributor : Shah Nawaz Burokur <>
Submitted on : Tuesday, December 27, 2016 - 9:40:06 PM
Last modification on : Wednesday, September 16, 2020 - 5:00:15 PM

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Abdallah Dhouibi, Shah Nawaz Burokur, Andre Lustrac. Planar metamaterial-based beam-scanning broadband microwave antenna. Journal of Applied Physics, American Institute of Physics, 2014, 115 (19), ⟨10.1063/1.4876233⟩. ⟨hal-01422967⟩

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