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Group and phase velocities in the TLM-symmetrical-condensed node mesh

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4 Author(s)
J. A. Morente ; Dept. de Fisica Aplicada, Granada Univ., Spain ; G. Gimenez ; J. A. Porti ; M. Khalladi

This paper presents the analytical expressions of group and phase velocities as a function of frequency in the TLM-symmetrical-condensed node mesh for the three fundamental directions. The direction [1, 1, 1] happens to be more dispersive than the directions [1, 1, 0] and [1, 0, 0], giving the TLM-symmetrical-condensed formulation dispersion characteristics similar to those of the FD-TD algorithm with a Courant number of 1/√3

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IEEE Transactions on Microwave Theory and Techniques  (Volume:42 ,  Issue: 3 )