A Differential Ultra Wideband Monopole Antenna

A differential rectangular monopole antenna for ultra wideband (UWB) applications is presented. It consists of a radiating patch and two rectangular ground planes. The impedance bandwidth is improved by introducing four slots on the rectangular patch. The simulated and measured results demonstrate that the antenna provides an impedance bandwidth (odd-mode reflection coefficient $ ) of 10.39 GHz (2.83-13.22 GHz), and exhibits a stable radiation performance in the whole UWB band.