Finite Formulation of Surface Impedance Boundary Conditions

In several electromagnetic applications field quantities are confined in layers which are thin with respect to other geometrical dimensions. The numerical solution of these phenomena has led to the development of special formulations. Among these, the surface impedance boundary conditions have been extensively investigated in the past decades, often coupling it to other techniques for the analysis of volumes like finite elements or boundary elements method. In this paper the surface impedance boundary conditions are presented by the light of finite formulation and extended to include the take into account magnetic nonlinearity.