Abstract
Transient electromagnetic (EM) scattering by composite objects is formulated by time-domain combined field integral equations (TDCFIEs) which are generally solved by combining the method of moments (MoM) in space domain and march-on-in-time (MoT) scheme in time domain. The space-domain MoM may not be convenient in implementation and the MoT scheme has a well-known late-time instability problem. In this work, the TDCFIEs is solved differently by combining the Nystrom method in space domain and the Galerkin method with Laguerre basis and testing functions in time domain. The proposed method can fully overcome the problems of traditional approach as demonstrated by a numerical example.
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