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Asymmetric Mushroom-Type Metamaterials

Fernandes, D. E. ; Maslovski , S. ; Silveirinha, M. G.

IEEE Transactions on Microwave Theory and Techniques Vol. PP, Nº 62, pp. 8 - 17, January, 2014.

ISSN (print): 0018-9480
ISSN (online): 0018-9480

Journal Impact Factor: 2,711 (in 2008)

Digital Object Identifier: 10.1109/TMTT.2013.2291539

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.