A High Gain & Wide Band Rectangular Microstrip Patch Antenna loaded with “Interconnected SRR” Metamaterial Structure

Communication applications require wide band and highly directive planner antennas. For such requirement this work deals with the analysis and simulation of a rectangular microstrip patch antenna loaded with “INTERCONNECTED SRR” metamaterial structure at a height of 3.2mm from the ground plane. The work also investigates the potential properties of the proposed metamaterial structure. The proposed Antenna is designed at a operating frequency of 2.75GHz to meet S-Band (2-4GHz) applications. By loading “Interconnected SRR” metamaterial structure with the rectangular patch antenna at a height of 3.2mm, the antenna’s bandwidth is found to be increased up to 378MHz and return loss is reduced to   -42.2dB i.e. the potential properties like return loss, bandwidth, directivity and total efficiency of the proposed antenna increases to a great extent in comparison to the rectangular patch antenna alone.  Double Negative properties of metamaterial have been proved by Nicolson-Ross-weir (NRW) method.