A compact super wideband monopole antenna

A novel compact Mickey-mouse shaped monopole antenna with super wideband (SWB) performance is presented. The proposed antenna consists of a radiating patch with a pair of ears and a top-corner rounded ground plane with a one-step staircase slot. In comparison to the conventional circular monopole structure, this configuration can achieve a much wider impedance bandwidth: in excess of 50∶1 (from 2 to 100 GHz) for a return loss greater than 10 dB. In addition to the impedance, the radiation pattern and gain of the proposed antenna are also presented and discussed. This SWB prototype is implemented and the measured results are in good agreement with the simulated ones.