A high gain aperture coupled cylindrical dielectric resonator antenna with metamaterial superstrate

This paper presents a design of high gain cylindrical dielectric resonator antenna (CDRA) with the help of metamaterial superstrate. A double layered metamaterial superstrate with unit cell periodicity of 4×4 is designed and suspended above a CDRA. The height of metamaterial superstrate from the ground is optimized to enhance the gain of antenna. The CDRA is fed by microstrip through aperuture at the ground plane. The gain of CDRA with metamaterial superstrates is found to be increased by 4.1 dB and the impedance bandwidth is al so improved.