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A simple meta-material unit cell with a negative permittivity in the X band is designed in this work. This meta-material cell is a one-sided cell which is simulated to extract scattering parameters, permittivity and permeability. Four different unit cells were examined and simulated to achieve the final structure. The effects of mutual-coupling of unit cells on structural performance were also investigated. Finally, a 7*7 array was constructed from these unit cells. The measurement and simulation results were acceptably consistent. The results show that this structure has a negative refractive index in the frequency range of 9.2–11.7 GHz.

Design and Analysis of a New Wide-Band Epsilon Negative Metamaterial for X-Band Applications