ANSYS HFSS 13 13 x86+x64

HFSS - is a powerful software package that calculates the multi-mode S-parameters and electromagnetic fields in three-dimensional passive structures of arbitrary shape.
HFSS uses to solve the equations of electrodynamics, the finite element method (Finite Element Method, FEM), which includes adaptive generation and division of cells. Solutions for the electromagnetic field, found from Maxwell's equations to accurately determine all the characteristics of a microwave device, with the emergence and transformation of some types of waves in the other losses in the materials and the radiation, etc.