Analysis of the accuracy of the numerical reflection coefficient of the finite-difference time-domain method at planar material interfaces

  title={Analysis of the accuracy of the numerical reflection coefficient of the finite-difference time-domain method at planar material interfaces},
  author={Andreas H. Christ and Stefan Benkler and Jurg Frohlich and Niels Kuster},
  journal={IEEE Transactions on Electromagnetic Compatibility},
This paper presents a rigorous analysis of the numerical error of the reflection coefficient of the finite-difference time-domain (FDTD) algorithm at planar material boundaries. The derived expressions show that the numerical reflection depends on a large number of parameters, such as the grid resolution and the time step, the frequency, the angle, and the polarization of the incident wave. In conclusion, the FDTD algorithm does not accurately fulfil the boundary conditions for the continuity… CONTINUE READING


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