一种高精度的稳定的色散边界条件
A HIGH ACCURACY STABLE DISPERSIVE BOUNDARY CONDITION
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摘要: 本文给出了一种高精度的稳定的色散边界条件(DBC),可应用于传输线的时域有限差分法(FDTD)的分析之中。我们用一个新的二阶差分式代替了边界条件中的微分算子。与P。Y。Zhao等人(1994)提出的色散边界条件相比,本文中的边界条件具有相同的绝对稳定特性,但具有更好的吸收性能。Abstract: A high accuracy stable Dispersive Boundary Condition(DBC) is presented, which can be used to model wave propagation in transmission lines by the finite-difference time-domain method. The differential factor in the boundary condition is replaced by a new two-order difference scheme. The new DBC has the same absolute stability as that proposed by P. Y. Zhao, et al. (1994), but it has a much better absorbing performance.
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Zhang X L, Mei K. K. IEEE Trans. on MTT, 1988, MTT-36(7):1775-1787.[2]Zhao P Y, et al. IEEE MTT-S. Int. Microwave Symp. Dig., San Francisco:1994, 35-38.[3]Bi Z Q, et al. IEEE Trans. on MTT, 1992, MTT-40(4):774-777.[4]Railton C, et al. IEEE Trans. on MTT, 1993, MTT-41(2): 290-297. -
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