A Novel Approach for Size Reduction Of Rectangular Microstrip Patch Antenna

摘要

An “Interconnected Circular SRR’s” shaped metamaterial structure at a height of 3.2mm from the ground plane has been proposed in this work. Proposed metamaterial structure enhances bandwidth by 173%, reduces average area by 40%, increases directivity by 1.068dBi and reduces return loss by 16.513dB. The proposed metamaterial structure along with the patch antenna exhibits 33.293dB return loss at 2.37GHz operating frequency and has an impedance bandwidth from 2.3887 to 2.3118GHz. The design and optimization of Rectangular microstrip patch antenna (RMPA) with and without proposed metamaterial structure were carried using CST Microwave Studio. Double-Negative (permittivity & permeability) properties of the proposed metamaterial structure have also been verified in this work by using Nicolson-Ross-Weir (NRW) approach.