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Extraction of the effective propagation and attenuation constants in a cut-wire array

We study the effective propagation and attenuation constants for wave propagation in a cut-wire array of finite metal wires. The effective propagation constant is obtained from the phase of the transmission data collected inside the array. The effective attenuation constant is then calculated by using the Kramers-Kronig relationship. The reconstructed transmission loss from the resulting attenuation constant shows good qualitative agreement with the raw transmission data.