一種高精度的穩(wěn)定的色散邊界條件
A HIGH ACCURACY STABLE DISPERSIVE BOUNDARY CONDITION
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摘要: 本文給出了一種高精度的穩(wěn)定的色散邊界條件(DBC),可應(yīng)用于傳輸線的時(shí)域有限差分法(FDTD)的分析之中。我們用一個(gè)新的二階差分式代替了邊界條件中的微分算子。與P。Y。Zhao等人(1994)提出的色散邊界條件相比,本文中的邊界條件具有相同的絕對(duì)穩(wěn)定特性,但具有更好的吸收性能。
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關(guān)鍵詞:
- 吸收邊界條件; 色散邊界條件; 時(shí)域有限差分法
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. -
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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