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Content Provider | IET Digital Library |
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Author | Chen, Xinlei Liu, Xiuqiang Li, Zhuo Gu, Changqing |
Abstract | The magnetic field integral equation based method of moments (MoM) with the Kirchhoff approximation can predict the interior scattering from cavities with impedance boundary condition (IBC) walls. However, if the IBC wall is a small part of the whole wall and is modified multiple times, the conventional MoM may be time-consuming due to the repeated and expensive lower–upper (LU) decompositions of impedance matrices. In this Letter, the Sherman–Morrison–Woodbury (SMW) formula is used to mitigate the problem. The authors only require to perform the LU decomposition of the cavity without IBC walls, and to efficiently obtain the solutions of the cavity with different IBC walls by reusing the LU decomposition and the SMW formula. |
Starting Page | 871 |
Ending Page | 873 |
Page Count | 3 |
ISSN | 00135194 |
Volume Number | 56 |
e-ISSN | 1350911X |
Issue Number | Issue 17, Aug (2020) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/el/56/17 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/el.2020.1339 |
Journal | Electronics Letters |
Publisher Date | 2020-06-30 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Conventional MoM Different IBC Walls Efficient Calculation Electric Field Integral Equation Electromagnetic Wave Propagation Electromagnetic Wave Scattering IBC Wall Impedance Boundary Condition Walls Impedance Matrix Integral Equation Interior Scattering Kirchhoff Approximation LU Decomposition Magnetic Field Integral Equation Matrix Algebra Method of Moments Numerical Analysis Numerical Approximation And Analysis Sherman–Morrison–Woodbury Formula |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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