Application of fast multipole method to finite-element boundary-integral solution of scattering problems
Application of fast multipole method to finite-element boundary-integral solution of scattering problems
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DOI：
10.1109/8.509880
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发表时间：
1996-06
影响因子：
5.7
通讯作者：
N. Lu;Jianming Jin
中科院分区：
文献类型：
--
作者：
N. Lu;Jianming Jin
有限元边界积分方法是处理涉及复杂几何形状和非均匀介质的散射和辐射问题的强大技术。该技术的能力主要受到涉及格林函数的边界积分离散化生成的完整矩阵的限制。使用快速多极子方法可以消除此限制，该方法以降低的复杂性评估边界积分。由此产生的新技术应用于解决背腔孔径和微带天线的电磁散射问题。给出的数值结果证明了其有效性和能力。
The finite-element boundary-integral method is a powerful technique for dealing with scattering and radiation problems involving complex geometries and inhomogeneous media. The capability of the technique is limited mainly by the full matrix generated by the discretization of the boundary integrals involving the Green's function. This limitation is lifted using the fast multipole method, which evaluates the boundary integrals at a reduced complexity. The resulting new technique is applied to the problem of electromagnetic scattering by cavity-backed apertures and microstrip antennas. Numerical results are presented to demonstrate its validity and capability.