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Analytical results for the frequency variation of the SW of a 2D metallic wire for different values of the cloak radius and permittivity. The radius of the wire is a = λ 0/20, while Zs = −j 10.34/10.36/49.59/51.20 for [γ = 1.2, εc = 1], [γ = 1.2, εc = 8], [γ = 1.8, εc = 1], [γ = 1.8, εc = 8], respectively.
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