Title :
Asymmetric Mushroom-Type Metamaterials
Author :
Fernandes, David E. ; Maslovski, S.I. ; Silveirinha, M.G.
Author_Institution :
Dept. de Eng. Electrotec., Univ. de Coimbra Polo II, Coimbra, Portugal
Abstract :
We study the scattering of electromagnetic waves by mushroom-type metamaterials such that the metallic wire array and the patch grids have different symmetry centers. Based on a quasi-static model, we develop an analytical formalism to compute the reflection and transmission characteristics of a metamaterial slab, and derive suitable boundary conditions for the patch grid interfaces. The theory is successfully compared with full-wave simulations.
Keywords :
electromagnetic metamaterials; electromagnetic wave scattering; wires (electric); additional boundary conditions; asymmetric mushroom-type metamaterials; electromagnetic wave scattering; metallic wire array; patch grid interfaces; quasi-static model; reflection characteristics; symmetry centers; transmission characteristics; wire media; Boundary conditions; Electromagnetic scattering; Electromagnetics; Media; Metamaterials; Slabs; Wires; Additional boundary conditions (ABCs); high-impedance surfaces; metamaterials; wire media;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2013.2291539
