An Efficient Domain Decomposition Laguerre-FDTD Method for Two-Dimensional Scattering Problems

In this paper, an efficient domain decomposition technique is introduced into the unconditionally stable finite-difference time-domain (FDTD) method based on weighted Laguerre polynomials to solve two-dimensional (2-D) electromagnetic scattering problems. The whole computational space is decomposed...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation Vol. 61; no. 5; pp. 2639 - 2645
Main Authors: He, Guo-Qiang, Shao, Wei, Wang, Xiao-Hua, Wang, Bing-Zhong
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.05.2013
Institute of Electrical and Electronics Engineers
Subjects:
Applied classical electromagnetism
Applied sciences
Couplings
Diffraction, scattering, reflection
Domain decomposition
Electromagnetic wave propagation, radiowave propagation
Electromagnetism; electron and ion optics
Exact sciences and technology
Finite difference methods
Fundamental areas of phenomenology (including applications)
Laguerre polynomials
Mathematical model
Physics
Polynomials
Radiocommunications
Radiolocalization and radionavigation
Radiowave propagation
Scattering
Schur complement system
Telecommunications
Telecommunications and information theory
Time domain analysis
Electromagnetic wave scattering
Performance evaluation
Second order
Radar cross section
Operator equation
Decomposition method
Finite difference time-domain analysis
Two dimensional model
Numerical method
Laguerre polynomial
Absorbing boundary condition
Schur complement system
Accuracy
Electromagnetic wave propagation
Laguerre polynomials
scattering
Wave scattering
Sparse matrix
Numerical simulation
Domain decomposition
Matrix equation
ISSN:0018-926X, 1558-2221
Online Access:Get full text
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Description
Summary:In this paper, an efficient domain decomposition technique is introduced into the unconditionally stable finite-difference time-domain (FDTD) method based on weighted Laguerre polynomials to solve two-dimensional (2-D) electromagnetic scattering problems. The whole computational space is decomposed into multiple subdomains where there is no direct field coupling between any two different subdomains. For the large sparse matrix equation generated by the implicit scheme, the domain decomposition technique transforms this large scale equation into some independent smaller equations. With the total-field/scattered-field boundary and Mur's second-order absorbing boundary condition, the radar cross sections of two 2-D structures are calculated. The numerical examples verify the accuracy and efficiency of the proposed method.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2013.2242836