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Negative-Zero-Positive Refractive Index in a Prism-Like Omega-Type Metamaterial

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7 Author(s)
Fuli Zhang ; Centre Nat. de la Rech. Sci., Univ. des Sci. et Technol. de Lille, Villeneuve dAscq ; Sylvain Potet ; Jorge Carbonell ; Eric Lheurette
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Negative-zero-positive index refraction was demonstrated numerically on the basis of full-wave analysis of a microstructured omega-type array and experimentally via angle resolved transmission measurement of a prism-type prototype. The experimental results are interpreted in terms of characteristic impedance and refractive index retrieved by a Fresnel inversion technique. The possibility to balance the dispersion characteristics with a negative-zero-positive index is demonstrated over X - and Ku -bands.

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IEEE Transactions on Microwave Theory and Techniques  (Volume:56 ,  Issue: 11 )