When the thin wire whose orientation cannot be parallel to Cartesian axis is modeled by the finite‐difference time‐domain method, the staircasing introduce numerical errors and nonphysical phenomenon. In order to reduce the influence on the induced current, a loaded technique is proposed. The lumped elements are matched at the grid corner based on the contour‐path model. All the electromagnetic difference equations nearby the wire are modified. The accuracy of the proposed technique is demonstrated by the comparison with the method of moment.

中文翻译：

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有限差分时域法建模斜线的加载技术

当通过有限差分时域方法对取向不能平行于直角坐标轴的细线进行建模时，楼梯间会引入数值误差和非物理现象。为了减少对感应电流的影响，提出了一种负载技术。集总元素在网格拐角处根据轮廓路径模型进行匹配。修改导线附近的所有电磁差方程。通过与矩量法的比较证明了所提技术的准确性。