On the Solution of 3-D Frequency Dependent Crank-Nicolson FDTD Scheme

  title={On the Solution of 3-D Frequency Dependent Crank-Nicolson FDTD Scheme},
  author={Hasan Khaled Rouf and Fumie Costen and S. G. Garcia and S. Fujino},
  journal={Journal of Electromagnetic Waves and Applications},
  pages={2163 - 2175}
Unconditional stability of the Crank-Nicolson Finite Difference Time Domain (CN-FDTD) method permits us to use time steps over the Courant-Friedrich-Lewy (CFL) limit of conventional FDTD method. However, in this work it was realized that, when the time step is set above CFL limit the coefficient matrix arising from Crank-Nicolson method is no longer diagonally dominant and iterative solvers require longer solution time in each FDTD iteration. Frequency dependent CN-FDTD (FD-CN-FDTD) scheme for… 
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