Unified Theory of Characteristic Modes : Part II - Tracking, Losses, and FEM Evaluation
(2022) In IEEE Transactions on Antennas and Propagation 70(12). p.11814-11824- Abstract
This is the second component of a two-part paper dealing with a unification of characteristic mode decomposition. This second part addresses modal tracking, interpolation, the role of ohmic losses, and presents several numerical examples for surface-based method-of-moment formulations. A new tracking algorithm based on algebraic properties of the transition matrix is developed, achieving excellent precision and requiring a very low number of frequency samples as compared to procedures previously reported in the literature. The transition matrix is further utilized to show that characteristic mode decomposition of lossy objects fails to deliver orthogonal far fields and to demonstrate how characteristic modes can be evaluated using the... (More)
This is the second component of a two-part paper dealing with a unification of characteristic mode decomposition. This second part addresses modal tracking, interpolation, the role of ohmic losses, and presents several numerical examples for surface-based method-of-moment formulations. A new tracking algorithm based on algebraic properties of the transition matrix is developed, achieving excellent precision and requiring a very low number of frequency samples as compared to procedures previously reported in the literature. The transition matrix is further utilized to show that characteristic mode decomposition of lossy objects fails to deliver orthogonal far fields and to demonstrate how characteristic modes can be evaluated using the finite element method.
(Less)
- author
- Gustafsson, Mats LU ; Jelinek, Lukas ; Schab, Kurt and Capek, Miloslav
- organization
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Antenna theory, characteristic modes, computational electromagnetics, Correlation, Eigenvalues and eigenfunctions, eigenvalues and eigenfunctions, Finite element analysis, Impedance, Interpolation, Matrix decomposition, method of moments, Scattering, scattering, T-matrix method
- in
- IEEE Transactions on Antennas and Propagation
- volume
- 70
- issue
- 12
- pages
- 1 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:85139442071
- ISSN
- 0018-926X
- DOI
- 10.1109/TAP.2022.3209264
- language
- English
- LU publication?
- yes
- id
- 5fcdfb78-34dd-4d3f-9dd2-32ab3d7164f3
- date added to LUP
- 2022-12-14 11:29:18
- date last changed
- 2023-11-16 20:32:30
@article{5fcdfb78-34dd-4d3f-9dd2-32ab3d7164f3, abstract = {{<p>This is the second component of a two-part paper dealing with a unification of characteristic mode decomposition. This second part addresses modal tracking, interpolation, the role of ohmic losses, and presents several numerical examples for surface-based method-of-moment formulations. A new tracking algorithm based on algebraic properties of the transition matrix is developed, achieving excellent precision and requiring a very low number of frequency samples as compared to procedures previously reported in the literature. The transition matrix is further utilized to show that characteristic mode decomposition of lossy objects fails to deliver orthogonal far fields and to demonstrate how characteristic modes can be evaluated using the finite element method.</p>}}, author = {{Gustafsson, Mats and Jelinek, Lukas and Schab, Kurt and Capek, Miloslav}}, issn = {{0018-926X}}, keywords = {{Antenna theory; characteristic modes; computational electromagnetics; Correlation; Eigenvalues and eigenfunctions; eigenvalues and eigenfunctions; Finite element analysis; Impedance; Interpolation; Matrix decomposition; method of moments; Scattering; scattering; T-matrix method}}, language = {{eng}}, number = {{12}}, pages = {{11814--11824}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Transactions on Antennas and Propagation}}, title = {{Unified Theory of Characteristic Modes : Part II - Tracking, Losses, and FEM Evaluation}}, url = {{http://dx.doi.org/10.1109/TAP.2022.3209264}}, doi = {{10.1109/TAP.2022.3209264}}, volume = {{70}}, year = {{2022}}, }