用非均匀网格FDTD法计算部分介质填充脊波导的截止频率
Journal of Yunnan Normal University(Natural Sciences Edition)(2009)
Abstract
文章提出用非均匀网格FDTD法分析部分介质填充脊波导,给出了非均匀网格剖分的参数条件。实例计算了部分介质填充的双脊波导、三脊波导的截止频率,其结果与文献报道值吻合较好;计算了部分介质填充非对称脊波导的截止频率,并获得归一化截止频率谱图。在相同网格数下,本算法既具有良好的精度,又仅占用很少的内存和较短的运行时间,在短时间内能获得较满意的结果。
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Key words
ridged waveguide,Non-uniform mesh FDTD,cutoff frequency
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