Naslov
Accurate Equivalent-Circuit Descriptions of Thin Glide-Symmetric Corrugated Metasurfaces

Autori
Valerio, Guido ; Šipuš, Zvonimir ; Grbic, Anthony ; Quevedo-Teruel, Oscar

Izvornik
IEEE transactions on antennas and propagation (0018-926X) 65 (2017), 5; 2695-2700

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Equivalent circuit ; homogenization ; transverse resonance method ; dispersive analysis ; corrugated surfaces ; metasurfaces ; planar lenses ; glide symmetry

Sažetak
Thin artificial surfaces that act as high frequency band-gap structures have been recently studied for the design of gap waveguides, hard surfaces, and planar lenses. Here, we propose a circuit-based method to analyse glide-symmetric corrugated metasurfaces that are embedded in a thin parallel plate waveguide. Our closed-form solution is based on rigorous analytical derivations. It achieves remarkable agreement with full-wave solvers, even when the waveguide thickness is extremely thin. In contrast, classical homogenization approaches are shown to be inaccurate for thin waveguides due to the interaction of higher-order Floquet modes between the surfaces. Numerical results validate our theoretical analysis and show the utility of the proposed method.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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