Bilayer metamaterial: analysis of left-handed transmission and retrieval of effective medium parameters
Author
Guven, K.
Cakmak, A. O.
Caliskan, M. D.
Gundogdu, T. F.
Kafesaki, M.
Soukoulis, C. M.
Özbay, Ekmel
Date
2007Source Title
Journal of Optics A: Pure and Applied Optics
Print ISSN
Publisher
Institute of Physics Publishing Ltd.
Volume
9
Issue
9
Pages
S361 - S365
Language
English
Type
ArticleItem Usage Stats
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Abstract
We report an experimental and numerical analysis of a planar metamaterial designed for normal-to-plane propagation, and operating at microwave frequencies. The metamaterial consists of cutwire and wire patterns, which are arranged periodically on both sides of a dielectric layer, in the form of a bilayer. The left-handed transmission band of the metamaterial is demonstrated experimentally. The effective index of refraction retrieved from the S parameters is found to be negative within this transmission band. An independent negative refraction experiment supports the existence of the negative index of refraction for the metamaterial.