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Accurate and Efficient Evaluation of Characteristic Modes

Tayli, Doruk LU ; Capek, Miloslav LU ; Akrou, Lamyae; Losenicky, Vit; Jelinek, Lukas and Gustafsson, Mats LU (2018) In IEEE Transactions on Antennas and Propagation
Abstract

A new method to improve the accuracy and efficiency of characteristic mode (CM) decomposition for perfectly conducting bodies is presented. The method uses the expansion of the Green dyadic in spherical vector waves. This expansion is utilized in the method of moments (MoM) solution of the electric field integral equation (EFIE) to factorize the real part of the impedance matrix. The factorization is then employed in the computation of CMs, which improves the accuracy as well as the computational speed. An additional benefit is a rapid computation of far fields. The method can easily be integrated into existing MoM solvers. Several structures are investigated illustrating the improved accuracy and performance of the new method.

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author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Antenna theory, convergence of numerical methods, eigenvalues and eigenfunctions, electromagnetic theory, numerical analysis
in
IEEE Transactions on Antennas and Propagation
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85053164321
ISSN
0018-926X
DOI
10.1109/TAP.2018.2869642
language
English
LU publication?
yes
id
cba92212-f8ff-4ed3-91f1-fcdaf1d5e531
date added to LUP
2018-10-11 12:37:11
date last changed
2018-11-21 21:42:21
@article{cba92212-f8ff-4ed3-91f1-fcdaf1d5e531,
  abstract     = {<p>A new method to improve the accuracy and efficiency of characteristic mode (CM) decomposition for perfectly conducting bodies is presented. The method uses the expansion of the Green dyadic in spherical vector waves. This expansion is utilized in the method of moments (MoM) solution of the electric field integral equation (EFIE) to factorize the real part of the impedance matrix. The factorization is then employed in the computation of CMs, which improves the accuracy as well as the computational speed. An additional benefit is a rapid computation of far fields. The method can easily be integrated into existing MoM solvers. Several structures are investigated illustrating the improved accuracy and performance of the new method.</p>},
  author       = {Tayli, Doruk and Capek, Miloslav and Akrou, Lamyae and Losenicky, Vit and Jelinek, Lukas and Gustafsson, Mats},
  issn         = {0018-926X},
  keyword      = {Antenna theory,convergence of numerical methods,eigenvalues and eigenfunctions,electromagnetic theory,numerical analysis},
  language     = {eng},
  month        = {09},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Antennas and Propagation},
  title        = {Accurate and Efficient Evaluation of Characteristic Modes},
  url          = {http://dx.doi.org/10.1109/TAP.2018.2869642},
  year         = {2018},
}