A Low Loss Broadband Metamaterial Based High Gain W-band Flat Lens Antenna for Radar Application

In this communication, a complementary split resonator (CSR) based periodic meta material structure is proposed for design of W-band (70-110 GHz) lens antenna, suitable for radar application. By detecting the directivity of electromagnetic radiation from a W-band Yagi antenna when passed through the metamaterial structure, it has been found that, the integration is suitable for long distance transmission. The metamaterial structure as lens has been designed, simulated and optimized by commercially available ANSYS HFSS Software. The unit cell structure is realized for its near zero metamaterial (NZMTM) properties such as refractive index, Permeability, Permittivity in order to design low loss, broadband and high gain lens antenna to increase the focusing effect.