Abstract
The Complimentary Split-Ring Resonator metamaterial is used in antennas for RADAR applications. Two structure of metamaterial is used for mutual coupling reduction and gain enhancement of the patch antenna in x-band, mutual coupling reduction between the microstrip patch antenna is obtained by CSS metamaterial applied in the ground plane between two patch antennas. Metamaterial alters the substrate permittivity, to become negative in the design frequency, resulting in 6dB reduction in mutual coupling between patch antennas. An improved gain, compact size with near zero index (NZI) antenna is designed with enhanced radiation properties. Modified Double Circular Ring Resonator (MDCRR) structure is placed above the microstrip patch antenna act as Meta surface. The proposed NZI lens is designed to increase the measured gain in E- and H-plane in operating frequency band.
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