Effects of Slit Position on the Design of a Printed Dipole Antenna with Split-Ring Resonators

Abstract

This paper presents the effects of a split-ring resonator (SRR) slit position on the design of a broadband printed dipole antenna. The antenna is made of two printed dipole arms enclosed by two rectangular and identically printed SRRs. One dipole arm with SRR is printed on the top side of the substrate, while the other dipole arm with SRR is printed on the bottom side of the substrate. By changing the SRR slit position, the different antenna characteristics are observable in terms of impedance bandwidth and radiation patterns. The optimized compact antenna has overall dimensions of 74.4 × 9.6 × 0.508 mm3 (0.469λ × 0.06λ × 0.0032λ at 1.895 GHz) with a fractional bandwidth of 54.350/0 (1.38 to 2.41 GHz for| S|11< -10 dB) and radiation efficiency of> 92%.