Miniaturization of microstrip patch antenna using metamaterial loaded with SRR

A size reduction technique of the microstrip patch antenna using metamaterial has been proposed. In order to establish that, inset-fed microstrip patch antenna working with L-S band (2 GHz - 5 GHz) is optimized through the available closed form relations and CST (computer simulation technology) simulator, fabricated and measured. Then proposed microstrip patch antenna has been loaded with complementary split-ring resonator (CSRR) at the ground plane, fabricated and measured. Performance of both the antenna was compared with respect to reflection coefficient, in order to prove the miniaturization. Beforehand, a metamaterial property of the CSRR loaded substrate is verified using transmission line model. Proposed method shows significant reduction in the antenna size for the specific resonance frequency of operation.