An efficient EM simulation method for the fast design and analysis of large antenna arrays

The design and analysis of large antenna arrays bring great challenges for conventional numerical methods in computational electromagnetics. An efficient dual-primal finite element tearing and interconnecting (FETI-DP) method is proposed to deal with these challenges. It significantly improves the analysis efficiency by exploiting the geometrical repetitiveness of antenna arrays, and adopts a high order transmission condition to speedup the iterative convergence. A hierarchical (ℋ-) matrix algorithm based on the nested dissection technique is introduced to futher reduce the computational costs of the FETI-DP. Numerical experiments will demonstrate the effectiveness of the proposed method.