SOLVER FOR TRANSIENT AND BROADBAND PROBLEMS IN ELECTROMAGNETICS

A time-domain (TD) numerical method has been developed based on the method-of moments (MoM) and marching-on-time (MoT) solution of the electrical-type integral equation with mixed potential formulation and free-space Green’s functions. This time-domain integral-equation (TDIE) code is applicable for arbitrary 3-D antennas and arrays composed conductors. It was developed particularly to simulate ultra-wideband (UWB), finite phased arrays of tapered slot antennas and some results from this study are included in the paper. The TDIE, which calculates wideband data in a single solution and utilizes basis functions defined only on the surfaces of conductors but not throughout the entire volume of the array, requires much less RAM and CPU time than frequency-domain and FDTD methods