Analysis of electromagnetic fields in an anisotropic medium by an FDTD method. II. (Japanese. English summary) Zbl 0957.78500
Part I, cf. ibid. 29, 25-29 (1995; Zbl 0855.65134).
Summary: Bérenger’s PML (perfectly matched layer) is the most effective absorbing boundary condition (ABC) for FDTD (finite-difference time-domain) computation. In this paper, a PML ABC for the dispersive and anisotropic medium such as plasma or ferrite in the static magnetic field is described. The PML-FDTD method is applied to the two-dimensional electromagnetic field problem of a ferrite loaded rectangular waveguide. The electromagnetic field generated by a magnetic current source in a parallel-plate plasma waveguide is evaluated numerically by using the PML-FDTD method. The numerical electromagnetic fields are compared with other theoretical values. We can conclude that the PML-FDTD method is useful for the analysis of electromagnetic fields in a waveguide filled with an anisotropic medium.
Summary: Bérenger’s PML (perfectly matched layer) is the most effective absorbing boundary condition (ABC) for FDTD (finite-difference time-domain) computation. In this paper, a PML ABC for the dispersive and anisotropic medium such as plasma or ferrite in the static magnetic field is described. The PML-FDTD method is applied to the two-dimensional electromagnetic field problem of a ferrite loaded rectangular waveguide. The electromagnetic field generated by a magnetic current source in a parallel-plate plasma waveguide is evaluated numerically by using the PML-FDTD method. The numerical electromagnetic fields are compared with other theoretical values. We can conclude that the PML-FDTD method is useful for the analysis of electromagnetic fields in a waveguide filled with an anisotropic medium.
MSC:
| 78A50 | Antennas, waveguides in optics and electromagnetic theory |
| 78M20 | Finite difference methods applied to problems in optics and electromagnetic theory |
| 35Q60 | PDEs in connection with optics and electromagnetic theory |
