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。
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.
基金
国家自然科学基金
关键词
吸收边界条件
色散边界条件
传输线
Absorbing boundary condition, Dispersive boundary condition, Finite-difference time-domain method
