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Article Dans Une Revue International Journal of Microwave and Wireless Technologies Année : 2023

Dispersion properties of glide-symmetric corrugated metasurface waveguides

Résumé

Abstract In this paper, a mode-matching procedure is used to prove for the first time the dispersionless behavior of glide symmetry (GS) in corrugated metasurface waveguides. Depending on their field symmetry, the Floquet harmonics have a different impact onto the frequency dispersion, which is reduced with GS when the gap between the surfaces is small. Indeed, the glide-symmetric waveguide is shown to have the same effective propagation features as a scaled mirror-symmetric waveguide with half the period and a doubled gap. We propose closed-form formulas for the effective refractive index of the glide-symmetric waveguide in the first Brillouin zone, having a small groove compared to the period. The closed-form expressions analytically prove the dispersionless behavior of GS.
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Dates et versions

hal-04373024 , version 1 (06-02-2024)

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Boris Fischer, Guido Valerio. Dispersion properties of glide-symmetric corrugated metasurface waveguides. International Journal of Microwave and Wireless Technologies, 2023, pp.1-8. ⟨10.1017/S1759078723000090⟩. ⟨hal-04373024⟩
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