Effective parameter retrieval of 3D bianisotropic scatterer arrays for oblique propagation

In this paper, the effective parameters of infinite 3D arrays composed of bianisotropic particles for oblique wave illumination are extracted. First, the polarizability matrix of the simple bianisotropic scatterers that constitute the array is obtained along with the complex wavenumber for oblique propagation through the same array. Findings are, then, implemented into a first-principles homogenization technique and the desired effective parameters are finally retrieved. The proposed methodology is applied to two well-known bianistropic particles for various incidence angles of propagation.