A 1D Gaussian Function for Efficient Generation of Plane Waves in 1D, 2D, and 3D FDTD
A 1D Gaussian Function for Efficient Generation of Plane Waves in 1D, 2D, and 3D FDTD
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DOI：
10.1109/ieeeconf35879.2020.9329878
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发表时间：
2020-07
期刊：
影响因子：
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通讯作者：
Brian Guiana;A. Zadehgol
中科院分区：
文献类型：
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作者：
Brian Guiana;A. Zadehgol
推导了一维高斯表达式，并将其作为TF/SF公式中的一维E/H入射场，在一维、二维和三维FDTD仿真中有效地产生平面波。解析表达式简单，消除了存储和计算E/ h场入射阵列及其相关吸收边界所需的计算资源。在一维、二维和三维时域有限差分的神奇时间步处的时域有限差分仿真结果表明，一维解析高斯函数产生的平面波与一维时域有限差分入射阵列产生的平面波具有良好的相关性。
A 1D Gaussian expression is derived and used as the 1D E/H incident field in the TF/SF formulation to efficiently generate plane waves in 1D, 2D, and 3D FDTD simulations. The analytic expression is simple, and it eliminates the need for computational resources to store and compute the E/H-field incident arrays and their associated absorbing boundaries. FDTD simulation results at the magic time-step in 1D, 2D, and 3D FDTD show good correlation between plane waves generated by the 1D analytic Gaussian function vs. those generated by 1D FDTD incident arrays.