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
Journal Impact Factor: 2,711 (in 2008)
Digital Object Identifier: 10.1109/TMTT.2013.2291539
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.