期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 65, 期 5, 页码 2695-2700出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2017.2677923
关键词
Corrugated surfaces; dispersive analysis; equivalent circuit; glide symmetry; homogenization; metasurfaces; planar lenses; transverse resonance method
资金
- Spanish Government [TEC2013-44019-R]
- Swedish STINT Postdoctoral Transition Grants programme - Swedish Foundation for International Cooperation in Research and Higher Education [PT2014-5813]
- French Government under the ANR project HOLeYMETA [ANR-16-CE24-0030]
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.
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