Analysis of Large Array Antenna Based on Parallel Finite Element Domain Decomposition Method

Large array antennas have been widely used in mobile communication, target detection, electronic countermeasures and other fields. Using efficient and accurate electromagnetic algorithms simulate them has become a research hotspot. In this paper, a large-scale parallel finite element domain decomposition method (FEM-DDM) solver is implemented for accurate and fast calculation of large array antennas. Compared with similar research work, the solver without using the periodicity of the array antenna, so it can be used for large antennas with arbitrary structure. The computational accuracy and efficiency of the implemented solver is verified through numerical examples. A large array antenna which generate exceeded 30 million tetrahedrons and 220 million unknowns is calculated with only 53 minutes.