VoxHenry: FFT-Accelerated Inductance Extraction for Voxelized Geometries
VoxHenry: FFT-Accelerated Inductance Extraction for Voxelized Geometries
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VoxHenry：体素化几何形状的 FFT 加速电感提取
DOI：
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发表时间：
2018
影响因子：
4.3
通讯作者：
Jacob K. White
中科院分区：
文献类型：
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作者：
A. Yucel;Ioannis P. Georgakis;A. Polimeridis;H. Bağcı;Jacob K. White
提出了一种基于快速傅里叶变换(FFT)加速的积分方程模拟器VoxHenry，用于提取按体素离散的结构的频率相关电感和电阻。VoxHenry与流行的电感萃取器FastHenry有许多共同之处。就像FastHenry一样，VoxHenry解决了电体积积分方程和电流连续性方程的组合，但有三个区别使VoxHenry适合并非常有效地分析体素几何：1)它利用一组精心选择的分段常量和分段线性基函数；2)它利用FFT来加速方程组迭代求解过程中的矩阵-矢量乘法；以及3)它使用稀疏预处理器来确保迭代解的快速收敛。VoxHenry能够在台式计算机上精确计算任意形状和大规模结构的频率相关电感和电阻。通过对各种结构的电感分析，包括方形和圆形线圈以及射频电感阵列(位于接地面上)，证明了VoxHenry的准确性、效率和适用性。
VoxHenry, a fast Fourier transform (FFT)-accelerated integral-equation-based simulator for extracting frequency-dependent inductances and resistances of structures discretized by voxels, is presented. VoxHenry shares many features with the popular inductance extractor, FastHenry. Just like FastHenry, VoxHenry solves a combination of the electric volume integral equation and the current continuity equation, but with three distinctions that make VoxHenry suitable and extremely efficient for analyzing voxelized geometries: 1) it leverages a carefully selected set of piecewise-constant and piecewise-linear basis functions; 2) it exploits FFTs to accelerate the matrix–vector multiplications during the iterative solution of system of equations; and 3) it employs a sparse preconditioner to ensure the rapid convergence of iterative solution. VoxHenry is capable of accurately computing frequency-dependent inductances and resistances of arbitrarily shaped and large-scale structures on a desktop computer. The accuracy, efficiency, and applicability of VoxHenry are demonstrated through inductance analysis of various structures, including square and circular coils as well as arrays of RF inductors (situated over ground planes).