| Citation: | Jie XU, Ke XU, Zhixiang HUANG. A New High Order Finite Difference Time Domain Method[J]. Journal of Electronics & Information Technology, 2020, 42(2): 425-429. doi: 10.11999/JEIT190050
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Compared with the traditional high-order Finite Difference Time Domain(FDTD) Method, an improved high-order FDTD optimization method is proposed in this paper. This algorithm is based on Ampere’s law of circuits and finds a set of optimal coefficients through computer technology to minimize the global dispersion error of the FDTD method.The simulation of point source radiation with different resolutions shows that this method still has very low phase error in the case of lower resolution. It provides an effective solution to the problem of numerical dispersion in the modeling of large size structures.
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