UWB Antennas Analysis Using FDTD-Based Discrete Green's Function Approach

Discrete Green's function (DGF) approach for analysis of transient response of the ultrawideband (UWB) monopole antenna has been proposed. The marching-on-in-time solution of DGF method is based on finite-difference time-domain (FDTD) equations that offer more straightforward formulation than that of time-domain integral equations (TDIEs). In addition, unlike FDTD method, calculations are performed only on the surfaces of conductors but not throughout the entire volume. The finite ground plane effect on the UWB monopole antenna performance and transient response between two antennas in face-to-face and side-by-side scenarios have been investigated using this procedure with improving the computational speed.