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Marching-on-in-degree time-domain integral equation analysis of scattering from composite object with curvilinear RWG basis functions

Transient electromagnetic scattering from object composed of conductor and dielectric material is analyzed by the marching-on-in-degree (MOD) time-domain integral equation (TDIE) method. Weighted Laguerre polynomials are exploited as the entire domain temporal basis functions, and lead to unconditionally stable solution. Besides, the curvilinear RWG spatial basis functions decrease the number of unknowns compared with the RWG bases. Numerical results are provided to demonstrate the accuracy and efficiency of the proposed method.