The dispersion characteristics of the FD-TD method

  • D.H. Choi, J. Roy
  • Published 1989 in
    Digest on Antennas and Propagation Society…
The numerical phase and group velocity characteristics of the three-dimensional FDTD (finite-difference time-domain) algorithm are derived from the dispersion relation for wave propagation in the TEM, TE, or TM mode. From these dispersion characteristics, numerical errors due to dispersion can be easily assessed and would be used in determining the mesh… CONTINUE READING