Split–ring resonator loaded pentagon antenna for super wide band communications

Abstract

This work describes the designof an SRR-loaded pentagon monopole antenna for super wideband (SWB) applications on Rogers RT/Duroid 5880 dielectric material with dielectric constant of 2.2, and a dielectric loss tangent of 0.0009. The pentagon patch radiator is fed with a 50 Ω transmission line placed on the dielectric size of 16 mm × 14 mm × 0.787 mm. In this paper, SRR is etched from the radiating element, and partial ground is added to improve the performance characteristics. The proposed antenna has a bandwidth ratio (BR) of 185.38 and an impedance bandwidth (IBW) of 66.38 GHz at a reflection coefficient of −10 dB. It has a fractional bandwidth (FBW) of 197.85% and a bandwidth dimension ratio (BDR) of 19,786 dB, with a peak gain of 6.2 dB. The proposed antenna covers microwave applications, which cover the following spectrums: L: 1–2 GHz, S: 2–4 GHz, C: 4–8 GHz, X: 8–12 GHz, Ku: 12–18 GHz, K: 18–26.5 GHz, Ka: 26.5–40 GHz, and limited millimetre wave frequencies up to 70 GHz.