Design and analysis of a compact planar ultra-wideband fractal antenna

A compact co-planar waveguide (CPW)-fed planar monopole antenna using the Cantor and Koch is presented. The design achieves a good input impedance match throughout 2-18 GHz. The using of Conter with Knoch structure is shown to extend the antenna's impedance bandwidth for ultra wideband (UWB) performance. Simulation results demonstrate that the antenna exhibits the desired VSWR level and radiation patterns across the entire UWB frequency range.