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Two-dimensional (2-D) metallic wire arrays are studied as effective media with an index of refraction less than unity (neff < 1). The effective medium parameters (permittivity ??eff, permeability ??eff and neff) of a wire array are extracted from the finite-element simulated scattering parameters and verified through a 2-D electromagnetic band gap (EBG) structure case study. A simple design methodology...
Carbon nanotube films are characterized using Vector Network Analyzer (VNA) and Terahertz Time-Domain Spectroscopy (THz-TDS). Both transmission and reflection experiments are performed in order to measure the complex refractive index and the wave impedance. This method allows simultaneous extraction of both the permittivity and permeability without any assumptions. Experimental results are obtained...
We investigated the effective medium properties of metallic wire arrays. The extracted effective permittivity and permeability of a physically realizable wire array show that for certain frequency range, both low permittivity and refraction index can be achieved. We confirmed the feasibility of using the wire arrays as an effective low refraction index by studying a 2-D band gap structure embedded...
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