Finite element analysis of complex axisymmetric radiating structures

The finite element method using mixed edge nodal basis functions and cylindrical perfectly matched layer (PML) is an efficient and accurate method for the analysis of radiation problems. The use of edge elements to expand the transverse field components avoids the problem of spurious modes in the FEM formulation. The use of cylindrical PML for mesh truncation allows an efficient computational domain for almost any problem geometry, and the PML can be made very accurate, allowing the PML to be place near the problem geometry.