Closed-form PO-PTD solution for fast electromagnetic scattering prediction

The closed-form PO-PTD solution is presented to fast predict electromagnetic scattering from large-scale objects. The proposed closed-form formulation can avoid the intensive integral computation on surfaces and edges/wedges. Therefore, computation cost can be greatly reduced for electrically large structures. Numerical results show good accuracy and efficiency compared to those obtained from the multilevel fast multipole algorithm (MLFMA).