Experimental demonstration of deflection angle tuning in unidirectional fishnet metamaterials at millimeter-waves

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  • Universidad Pública de Navarra
  • Adam Mickiewicz University


Asymmetric transmission enables high forward-to-backward transmission contrast in the Lorentz reciprocal framework, so that it is envisioned to be a backbone of future practical devices with strong directional selectivity. In this letter, we experimentally demonstrate efficient tuning and sign-switching capabilities of the deflection angle by varying the incidence angle and/or frequency in the unidirectional regime of a compact and simple structure comprising a stack of a fishnet metamaterial and a dielectric grating. The entire device operates at frequencies ranging from 45 to 75 GHz and has a total thickness of 0.77λ0 at 60GHz.


Original languageEnglish
Article number061109
JournalApplied Physics Letters
Issue number6
Publication statusPublished - 9 Feb 2015

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