Susceptibility Derivation and Experimental Demonstration of Refracting Metasurfaces without Spurious Diffraction

Guillaume Lavigne, Karim Achouri, Viktar Asadchy, Sergei Tretyakov, Christophe Caloz

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

50 Sitaatiot (Scopus)

Abstrakti

Refraction represents one of the most fundamental operations that may be performed by a metasurface. However, simple phasegradient metasurface designs suffer from restricted angular deflection due to spurious diffraction orders. It has been recently shown, using a circuit-based approach, that refraction without spurious diffraction, or diffraction-free, can fortunately be achieved by a transverse (or inplane polarizable) metasurface exhibiting either loss-gain, nonreciprocity or bianisotropy. Here, we rederive these conditions using a mediumbased – and hence more insightfull – approach based on Generalized Sheet Transition Conditions (GSTCs) and surface susceptibility tensors, and experimentally demonstrate, for the first time beyond any doubt, two diffraction-free refractive metasurfaces that are essentially lossless, passive, bianisotropic and reciprocal.

AlkuperäiskieliEnglanti
Sivut1321 - 1330
Sivumäärä10
JulkaisuIEEE Transactions on Antennas and Propagation
Vuosikerta66
Numero3
DOI - pysyväislinkit
TilaJulkaistu - 15 tammikuuta 2018
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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