Time-domain integral equation methods for transient analysis

Some recent developments and extensions of the method of moments for analyzing, in the time domain, the interaction of transient electromagnetic waves with perfect electric conductors are described. The electric and magnetic time-domain integral equations (TDIEs) are formulated and their characteristics briefly discussed. Some issues involved in the formulation and solution of the thin-wire electric-field integral equation are examined. The solution of the magnetic- and electric-field integral equations for bodies modeled by patches is considered. The problem of the instabilities that appear in the solution of the TDIEs is addressed. The possibilities of using postprocessing of the time-domain data to visualize the history of electromagnetic phenomena are illustrated.<>