A Compact Dual-Band Antenna Using Hexagonal Complementary Split Ring Resonator.

This work illustrates a novel design of metamaterial inspired structure on miniaturization of microstrip patch antenna. The proposed structure consists of a hexagonal microstrip patch antenna loaded with two hexagonal complementary split ring resonator unit cells etched in the ground plane along with a shortening pin. The proposed dualband antenna with resonances at 3.394 GHz and 4.852 GHz possess the advantages of having simple and miniaturized structure, good impedance matching and VSWR with very low return loss at both resonances. The overall dimension of the proposed antenna is 0.22λ₀ x 0.22λ₀. Also, the electromagnetic characteristics of the resulting composite medium were evaluated from the simulated complex scattering parameters to demonstrate the extant of metamaterial. [ABSTRACT FROM AUTHOR]