Experimental validation of an ultra-thin metasurface cloak for hiding a metallic obstacle from an antenna radiation at low frequencies - Université Paris Nanterre Access content directly
Journal Articles Applied Physics Letters Year : 2017

Experimental validation of an ultra-thin metasurface cloak for hiding a metallic obstacle from an antenna radiation at low frequencies

Tatiana Teperik
  • Function : Author
Guy Sabanowski
  • Function : Author
Gérard-Pascal Piau
  • Function : Author

Abstract

We demonstrate numerically and experimentally an ultra-thin (≈ λ/240) metasurface-based invisibility cloak for low frequency antenna applications. We consider a monopole antenna mounted on a ground plane and a cylindrical metallic obstacle of diameter smaller than the wavelength located in its near-field. To restore the intrinsic radiation patterns of the antenna perturbed by this obstacle, a metasurface cloak consisting simply of a metallic patch printed on a dielectric substrate is wrapped around the obstacle. Using a finite element method based commercial electromagnetic solver, we show that the radiation patterns of the monopole antenna can be restored completely owing to electromagnetic modes of the resonant cavity formed between the patch and obstacle. The metasurface cloak is fabricated, and the concept is experimentally demonstrated at 125 MHz. Performed measurements are in good agreement with numerical simulations, verifying the efficiency of the proposed cloak.
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Dates and versions

hal-04215686 , version 1 (22-09-2023)

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Tatiana Teperik, Shah Nawaz Burokur, André de Lustrac, Guy Sabanowski, Gérard-Pascal Piau. Experimental validation of an ultra-thin metasurface cloak for hiding a metallic obstacle from an antenna radiation at low frequencies. Applied Physics Letters, 2017, 111 (5), ⟨10.1063/1.4996065⟩. ⟨hal-04215686⟩
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