A low loss square strip ring resonator for upper Ku-band lens antenna design

In this communication, a square strip ring resonator (SSRR) based periodic metamaterial structure is addressed to improve the gain of a horn antenna operating in 16-20 GHz (upper Ku band) by 6 dB. The unit cell of the periodic metamaterial structure is chosen in such a way that, it offers low loss and dispersion for the lens structure and to realize the near zero values Permeability (μ), Permittivity (ε) and Refractive Index (η). The metamaterial structure as the lens has been designed, simulated and optimized by commercially available ANSYS HFSS Software.