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Accurate Equivalent-Circuit Descriptions of Thin Glide-Symmetric Corrugated Metasurfaces
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0002-4900-4788
2017 (English)In: IEEE Transactions on Antennas and Propagation, ISSN 0018-926X, E-ISSN 1558-2221, Vol. 65, no 5, p. 2695-2700Article in journal (Refereed) Published
Abstract [en]

Thin artificial surfaces that act as high frequency bandgap structures have been recently studied for the design of gap waveguides, hard surfaces, and planar lenses. Here, we propose a circuit-based method to analyze 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.

Place, publisher, year, edition, pages
IEEE, 2017. Vol. 65, no 5, p. 2695-2700
Keywords [en]
Corrugated surfaces, dispersive analysis, equivalent circuit, glide symmetry, homogenization, metasurfaces, planar lenses, transverse resonance method
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Identifiers
URN: urn:nbn:se:kth:diva-207893DOI: 10.1109/TAP.2017.2677923ISI: 000400922600062Scopus ID: 2-s2.0-85018890841OAI: oai:DiVA.org:kth-207893DiVA, id: diva2:1103307
Note

QC 20170530

Available from: 2017-05-30 Created: 2017-05-30 Last updated: 2018-09-19Bibliographically approved

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Quevedo-Teruel, Oscar

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