Design of steered array lens antenna system with isolation enhancement

Abstract

A new compact economical patch array antenna with beam steering ability and mutual coupling reduction between the patches is presented in this article. By incorporating modified hexagonal spilt ring resonator metamaterial structure in one of the 1 X 2 patch array enables the property of beam steering as well as mutual coupling reduction. Similarly, by incorporating modified hexagonal split ring metamaterial structure in both the patch of 1x2 patch array antenna mutual coupling reduction of around 21dB at 2.4GHz without beam steering capability is observed. The spacing of 0.25λo between the patches of an antenna array, around 24 dB lower mutual coupling at the operating frequency is obtained. Both left and right modified patch produces a beam scanning of-200 to +200 respectively. The fabricated prototype antenna results are validated with simulation results using experimental measurements.