A General Propagation Matrix for a Two-Dimensional Inhomogeneous Thin Layer
Sailing He, Takashi Takenaka · Journal of Electromagnetic Waves and Applications · 1998
The concept of propagation matrix is generalized to a two- break dimensional inhomogeneous thin layer. The first order and second order propagation matrices are derived with a scaling method through an asymptotic expansion as a power series of the thickness. The generalized propagation matrix is verified in several special cases when the propagation matrix has an exact and explicit form.