Multiple eigencurrents expansion for the solution of wave scattering from anisotropic bodies

We outline the extension of the eigencurrents expansion method applied to the solution of wave scattering from clusters of anisotropic objects with different sizes and shapes and constitutive parameters. The problem is formulated with the linear embedding via Greens´ operator (LEGO) approach, and the degrees of freedom are reduced by employing different sets of eigencurrents for representing the unknowns on the surface of the LEGO electromagnetic bricks. The “right” criterion for choosing the numbers of eigencurrents is discussed.