Domain decomposition method and system for electromagnetic simulation

A domain decomposition system for electromagnetic simulation, comprising:

• a domain division module configured to divide an antenna structure model into multiple subdomains, wherein the antenna structure model is an antenna structure model obtained by modeling to-be-simulated array antennas with modeling software;
• and each of the subdomains corresponds to a structure in one of the to-be-simulated array antennas;
• a subdivision module configured to subdivide each of the subdomains by a tetrahedral network to obtain multiple tetrahedrons, wherein the size of the tetrahedral network is determined by a degree of fine demand of the corresponding subdomain, and the degree of fine demand of the subdomain is determined by a degree of fine subdivision demand of a corresponding structure;
• a vector basis function obtaining module configured to obtain a vector basis function of each edge of each of the tetrahedrons according to vertex positions and lengths of the edges of the tetrahedron, wherein the vector basis function comprises an electric field vector basis function and a magnetic field vector basis function;
• and
• an electric field and magnetic field calculation module configured to calculate an electric field value and a magnetic field value of any point in a tetrahedron to which each of the edges belongs using a vector basis function corresponding to the edge and a double curl electric field wave equation of a subdomain to which the edge belongs.