1. Accurate Equivalent-Circuit Descriptions of Thin Glide-Symmetric Corrugated Metasurfaces
- Author
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Zvonimir Sipus, Oscar Quevedo-Teruel, Guido Valerio, Anthony Grbic, Laboratoire d'Electronique et Electromagnétisme (L2E), Université Pierre et Marie Curie - Paris 6 (UPMC), Faculty of Electrical Engineering and Computing [Zagreb] (FER), University of Zagreb, Department of Electrical Engineering and Computer Science (EECS), University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, Department of Electromagnetic Engineering [Stockholm], Royal Institute of Technology [Stockholm] (KTH ), and ANR-16-CE24-0030,HOLeYMETA,Modélisation et Conception de Métasurfaces Creuses(2016)
- Subjects
Floquet theory ,Materials science ,transverse reso- nance method ,Equivalent circuit ,homogenization ,transverse resonance method ,dispersive analysis ,corrugated surfaces ,metasurfaces ,planar lenses ,glide symmetry ,Band gap ,Physics::Optics ,02 engineering and technology ,Homogenization (chemistry) ,law.invention ,Planar ,Optics ,law ,0202 electrical engineering, electronic engineering, information engineering ,Electrical and Electronic Engineering ,business.industry ,020206 networking & telecommunications ,Parallel plate ,[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism ,020201 artificial intelligence & image processing ,Index Terms-Equivalent circuit ,business ,Waveguide - Abstract
International audience; 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.
- Published
- 2017