期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 69, 期 7, 页码 4020-4032出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2020.3044685
关键词
Mathematical model; Biological system modeling; Method of moments; Nonhomogeneous media; Computational modeling; Numerical models; Magnetic resonance imaging; Electromagnetic (EM) scattering; high contrast; inhomogeneity; high-order basis functions; magnetic resonance modeling; method of moments (MoM); volume integral equations (VIEs)
资金
- Skoltech-MIT Next Generation Program
A stable volume integral equation (VIE) solver based on polarization/magnetization currents is presented for accurate and efficient computation of electromagnetic scattering. The formulation is discretized using the Galerkin method with discontinuous piecewise linear basis functions on uniform voxelized grids, allowing for accelerated matrix-vector products in an iterative solver with the help of FFT.
A stable volume integral equation (VIE) solver based on polarization/magnetization currents is presented, for the accurate and efficient computation of the electromagnetic (EM) scattering from highly inhomogeneous and high contrast objects. We employ the Galerkin method of moments to discretize the formulation with discontinuous piecewise linear basis functions on uniform voxelized grids, allowing for the acceleration of the associated matrix-vector products in an iterative solver, with the help of FFT. Numerical results illustrate the superior accuracy and more stable convergence properties of the proposed framework, when compared against standard low-order (piecewise constant) discretization schemes and a more conventional VIE formulation based on electric flux densities. Finally, the developed solver is applied to analyze complex geometries, including realistic human body models, typically used in modeling the interactions between EM waves and biological tissue.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据