Key shaped planar UWB monopole antenna with dual band-notch characteristics

Abstract

In this paper, dual vertical cross-elliptical radiating elements dual-notched ultra-wideband antenna (UWB) is proposed. The proposed antenna is compact in size (18 × 20 mm2 = 360 mm2) with combination of two ellipse and modified ground plane so as to cover UWB impedance bandwidth. There is a close agreement between the simulated and the measured results like return loss and VSWR of the proposed antenna where measured results also covers impedance UWB bandwidth from 2.84 GHz to 10.83 GHz which validates FCC standard UWB bandwidth from 3.1 GHz to 10.6 GHz. Moreover the two notched bands, i.e., WiMAX (3.30–3.80 GHz) along with C-band (3.80–4.20 GHz) and WLAN-IEEE 802.11a (5.15–5.825 GHz) band stopped so that the interference is eliminated. The proposed antenna is verified by measuring gain and radiation characteristics which exhibits nearly omni-directional pattern in the H-plane and monopole like pattern in E-plane of UWB bandwidth.