V. Galdi et Im. Pinto, Higher order impedance boundary conditions for metal-backed inhomogeneous dielectric layers, MICROW OPT, 22(4), 1999, pp. 249-254
A systematic spectral-domain approach is described for obtaining higher ord
er electromagnetic impedance boundary conditions for isotropic, longitudina
lly inhomogeneous, dielectric coatings on a polarization-preserving impedan
ce plane. Representative computational examples including single- and two-l
ayer inhomogeneous coatings are discussed to illustrate the accuracy of the
proposed approach. (C) 1999 John Wiley & Sons, Inc.