Optimizing the Compact-FDTD Algorithm for Electrically Large Waveguiding Structures
Optimizing the Compact-FDTD Algorithm for Electrically Large Waveguiding Structures
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DOI：
10.2528/pier07060703
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发表时间：
2007
影响因子：
6.7
通讯作者：
M. Hadi;S. Mahmoud
中科院分区：
文献类型：
--
作者：
M. Hadi;S. Mahmoud
本文研究了用于波导分析的Compact-FDTD方法的独特数值色散行为，特别是当波导尺寸远大于工作波长时，如高频EMC分析或隧道中的无线电波传播。这种色散行为与标准时域有限差分算法的偏差被量化，色散误差的主要来源被隔离并有效消除。优化的建模参数在适当的空间和时间分辨率方面产生的计算效率和无误差的数值模拟的电大波导结构。
This work investigates the unique numerical dispersion behavior of the Compact-FDTD method for waveguide analysis, especially when the waveguide dimensions are much larger than the operating wavelength as in high-frequency EMC analysis or radio-wave propagation in tunnels. The divergence of this dispersion behavior from the standard FDTD algorithm is quantified and a major source of dispersion error is isolated and effectively eliminated. Optimized modeling parameters in terms of appropriate spatial and temporal resolutions are generated for computationally efficient and error-free numerical simulations of electrically large waveguiding structures.