AN FVTD VERSION OF BERENGER ABSORBING BOUNDARY-CONDITION FOR A LOSSY MEDIUM

This paper is concerned with the perfectly matched layer (PML) for a l ossy medium in terms of a finite volume time domain (FVTD) method base d only on the Cartesian coordinate system. In this point-oriented FVTD method, there are no spatial differences between electric and magneti c fields. We can take account of the inhomogenity of the lossy medium by considering averaged material constants in each rectangular cell. N umerical examples are given for the electromagnetic wave propagation i n two-dimensional tunnels with bends and branches.