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IEEE Transactions on Antennas and Propagation
Volume 48 Number 7, July 2000

Analysis of Transient Electromagnetic Scattering from Closed Surfaces Using a Combined Field Integral Equation

Page 1064.

Abstract:

In the past, both the time-domain electric and magnetic field integral equations have been applied to the analysis of transient scattering from closed structures. Unfortunately, the solutions to both these equations are often corrupted by the presence of spurious interior cavity modes. In this article, a time-domain combined field integral equation is derived and shown to offer solutions devoid of any resonant components. It is anticipated that stable marching-on-in-time schemes for solving this combined field integral equation supplemented by fast transient evaluation schemes such as the plane wave time-domain algorithm will enable the analysis of scattering from electrically large closed bodies capable of supporting resonant modes.

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