Design and development of SRR loaded UWB metamaterial antenna for WLAN and WiMax applications

Abstract

An UWB antenna with single SRR which is a metamaterial is presented for WLAN and WiMAX applications. This antenna consists of rectangular patch fed with a microstrip line, using FR4 substrate with thickness of 1.6 mm and dielectric constant of 4.2. The antenna has a partial ground plane which is loaded with a metamaterial unit cell to obtain a wide bandwidth having resonant characteristics at 2.4GHz (IEEE 802.11b) for WLAN and 5.8GHz (IEEE 802.16d) for WiMAX. The proposed metamaterial antenna has overall size of 20×30×1.6mm3 and VSWR < 2 for the resonating frequency, which provides a good impedance matching. For the proposed single SRR UWB antenna, simulation results for gain, radiation pattern, and VSWR along with minimum return loss has been obtained.