Modified rational function modeling technique for printed monopole antenna for UWB applications

An equivalent circuit model for ultra-wideband (UWB) printed disc monopole antenna that is compatible with time-domain circuit simulators is presented in this paper. The methodology is based on applying the modified rational function model with passive components which are determined using vector fitting (VF) approaches. One of the key advantages of the proposed modeling method is the reduced complexity of the circuits describing the UWB network, which generally improves the robustness of the data fitting process. Simulation results show that this methodology is effective over the UWB bandwidth of 3.1 to 10.6 GHz frequency range.