3D optimised hybrid implicit–explicit FDTD method with suppressed numerical dispersion

3D optimised hybrid implicit–explicit FDTD method with suppressed numerical dispersion

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A 3D optimised hybrid implicit–explicit finite-difference time-domain (HIE-FDTD) method aimed at suppressing the numerical dispersion is proposed. Compared with the original HIE-FDTD method, the optimised parameters are introduced without costing any additional computational resource. In addition, the proposed algorithm sacrifices Courant–Friedrichs–Lewy condition and just requires a modest amount of reprogramming. The update equations of the proposed HIE-FDTD method are given and numerical results demonstrate that the proposed method performs better in the numerical dispersion.


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      • W. Sha , Z. Huang , M. Chen .
        3. Sha, W., Huang, Z., Chen, M., et al: ‘Survey on symplectic finite-difference time-domain schemes for Maxwell's equations’, Trans. Antennas Propag., 2008, 56, (2), pp. 28412846.
        . Trans. Antennas Propag. , 2 , 2841 - 2846
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