Electromagnetic scattering analysis of finite periodic structures based on a new FETI method

Finite element tearing and interconnecting method(FETI) is used to analyze the electromagnetic scattering of finite periodic structures. The original computational domain is partitioned into several non-overlapping sub-domains, the equivalent functional is established with Lagrange multipliers betwe...

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Bibliographic Details
Main Authors: Jin-Chun Li, Wei-Ping Ding, Jian Wang
Format: Conference Proceeding
Language:English
Subjects:
cholesky decomposition
Electromagnetic scattering
Electromagnetics
Equations
Finite Element Tearing and Interconnecting (FETI)
Magnetic domains
Matrix decomposition
Periodic strucuture
Silicon
Tin
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Summary:Finite element tearing and interconnecting method(FETI) is used to analyze the electromagnetic scattering of finite periodic structures. The original computational domain is partitioned into several non-overlapping sub-domains, the equivalent functional is established with Lagrange multipliers between the neighboring sub-domain to keep the electric field continuity on the interface. In the matrix calculation, the cholesky decomposition is adopted, which reduce computation time greatly. Compared to the full wave analysis with finite element method, the memory consumption is greatly reduced in the presented algorithm, which expand the application of finite element method in electromagnetic analysis of large-scale periodic structure. The accuracy and effectiveness are verified by some numerical examples presented.
ISSN:2154-4824
2154-4832