The novel Vector-Fitting approach for time-domain modeling of the propagation on convex obstacles in UWB channels

In this paper we introduce the new approach for the derivation of a simple in form UTD impulse responses of a convex object in the form of 2D cylinder. We focus in the paper on the diffraction phenomenon. The impulse responses can be derived for impedance as well as dielectric object case. The impulse responses can be used for simulations of UWB EM wave propagation in channels containing convex obstacles of various physical properties, e.g. human body (modeled by dielectric cylinder). The impulse responses are derived by applying Vector Fitting approximation.