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Restoring in-phase emissions from non-planar radiating elements using a transformation optics based lens

Abstract : The broadband directive in-phase emission from an array of sources conformed cylindrically is numerically and experimentally reported. Such manipulation is achieved through the use of a lens designed by transformation optics concept. The all-dielectric lens prototype is realized through three-dimensional (3D) polyjet printing and presents a graded refractive index. A microstrip antenna array fabricated using standard lithography techniques and conformed on a cylindrical surface is used as TE-polarized wave launcher for the lens. To experimentally demonstrate the broadband focusing properties and in-phase directive emissions, both the far-field radiation patterns and the near-field distributions have been measured. Experimental measurements agreeing qualitatively with numerical simulations validate the proposed lens and open the way to inexpensive all-dielectric microwave lenses for beam forming and collimation. (C) 2015 AIP Publishing LLC.
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https://hal-univ-paris10.archives-ouvertes.fr/hal-01422957
Contributor : Shah Nawaz Burokur <>
Submitted on : Tuesday, December 27, 2016 - 9:39:54 PM
Last modification on : Wednesday, September 16, 2020 - 5:00:15 PM

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Jianjia Yi, Shah Nawaz Burokur, Gérard-Pascal Piau, Andre Lustrac. Restoring in-phase emissions from non-planar radiating elements using a transformation optics based lens. Applied Physics Letters, American Institute of Physics, 2015, 107 (2), ⟨10.1063/1.4926928⟩. ⟨hal-01422957⟩

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