A symmetrical node for the FD-TD method

摘要

The Finite Difference Time Domain (FD-TD) method based on Yee's algorithm has been used intensively in the past few years to solve electromagnetic scattering/radiation [1]-[3] and eigenvalue problems [4]. In order to provide second order accuracy, Yee's lattice requires that the mesh on which the electric field components and the permittivity are defined, be interspaced with the mesh on which the magnetic field components and the permeability are defined.