X-Band Directivity improvement using Reflector

A metamaterial reflector resonating at 11.20 GHz measuring 8mm square shape structure is presented. An FR4 substrate was used and the incidental wave angles were varied from 0 ⁰ to 60 ⁰ . The structure demonstrated above 80% reflection and was further tested with a microstrip patch antenna. The structure proves to increase the realized gain directivity of the antenna. The structure also demonstrated largest bandwidth to be 3.60 GHz and the lowest to be 1.79 GHz with percentage bandwidth of 32.14% and 15.98% respectively.