Bilayer metamaterial: analysis of left-handed transmission and retrieval of effective medium parameters

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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.

Source Title

Journal of Optics A: Pure and Applied Optics

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Institute of Physics Publishing Ltd.

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Published Version (Please cite this version)

Language

English