A matrix surface impedance formulation for the analysis of EM-interactions to finite laminated composite slabs

This paper proposes a surface impedance boundary condition formulation for the analysis of electromagnetic interactions to laminated composite structures realized in carbon fiber or graphite/epoxy. The transmission matrix of a multilayer composite panel, relating the tangential components of the electric and magetic fields at the input and output planes, is deduced by considering also the anisotropy of the material. Therefore, the obtained surface impedance of the composite slab is expressed in matrix form. The proposed formulation is implemented in a finite-difference scheme. Applications are carried out in order to investigate the influence of different parameters, such as panel composition and fiber orientation.