A Fast Algorithm Based on PMCHW for Solving Composite Metallic and Dielectric Objects

A Green’s function interpolation method based on the PMCHW equation is proposed for analyzing electromagnetic problems of objects that including conductive and dielectric parts. This problem is solved using surface integral equations to solve the problem of uniform dielectrics and conductors. In order to improve computational efficiency, the PMCHW equation is combined with the multilevel Green’s function interpolation method. Based on this method, it can support the treatment of metals with limited conductivity and the treatment for the junctions of two different materials. This method is suitable for solving problems such as microstrip antenna arrays, RF and microwave devices. Numerical example demonstrates the accuracy and effectiveness of this method.