A stable marching-on-in-time algorithm capable of handling multiple excitations — Application to wire junction problems

In this work, a stable marching-on-in-time method is presented to obtain scattering response from arbitrary wire structures illuminated by a Gaussian plane wave directly in the time domain. Contrary to all the available time domain algorithms till now, the present procedure is also capable of handling multiple excitations in a trivial manner. The new procedure is based on the conventional method of moments and utilizes standard pulse functions for expansion of space and time variables. The testing procedure is accomplished by collocation procedure. The numerical results obtained using the new procedure are validated by comparing with data obtained from frequency domain solution and performing inverse discrete Fourier transform.