Iterative Calculation of Characteristic Modes Using Arbitrary Full-Wave Solvers
(2023) In IEEE Antennas and Wireless Propagation Letters 22(4). p.799-803- Abstract
An iterative algorithm is adopted to construct approximate representations of matrices describing the scattering properties of arbitrary objects. The method is based on the implicit evaluation of scattering responses from iteratively generated excitations. The method does not require explicit knowledge of any system matrices (<italic>e.g.</italic>, stiffness or impedance matrices) and is well-suited for use with matrix-free and iterative full-wave solvers, such as FDTD (Finite-difference time-domain method), FEM (Finite element method), and MLFMA (Multilevel Fast Multipole Algorithm). The proposed method allows for significant speed-up compared to the direct construction of a full transition matrix or scattering dyadic. The... (More)
An iterative algorithm is adopted to construct approximate representations of matrices describing the scattering properties of arbitrary objects. The method is based on the implicit evaluation of scattering responses from iteratively generated excitations. The method does not require explicit knowledge of any system matrices (<italic>e.g.</italic>, stiffness or impedance matrices) and is well-suited for use with matrix-free and iterative full-wave solvers, such as FDTD (Finite-difference time-domain method), FEM (Finite element method), and MLFMA (Multilevel Fast Multipole Algorithm). The proposed method allows for significant speed-up compared to the direct construction of a full transition matrix or scattering dyadic. The method is applied to the characteristic mode decomposition of arbitrarily shaped obstacles of arbitrary material distribution. Examples demonstrating the speed-up and complexity of the algorithm are studied with several commercial software packages.
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- author
- Lundgren, Johan LU ; Schab, Kurt LU ; Capek, Miloslav LU ; Gustafsson, Mats LU and Jelinek, Lukas
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Antenna theory, characteristic modes, computational electromagnetics, eigenvalues and eigenfunctions, scattering
- in
- IEEE Antennas and Wireless Propagation Letters
- volume
- 22
- issue
- 4
- pages
- 5 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:85144027380
- ISSN
- 1536-1225
- DOI
- 10.1109/LAWP.2022.3225706
- language
- English
- LU publication?
- yes
- id
- 57a9b81d-47a7-4fd3-ae06-4f37a7d00d99
- date added to LUP
- 2023-01-25 16:09:17
- date last changed
- 2023-11-21 06:03:26
@article{57a9b81d-47a7-4fd3-ae06-4f37a7d00d99, abstract = {{<p>An iterative algorithm is adopted to construct approximate representations of matrices describing the scattering properties of arbitrary objects. The method is based on the implicit evaluation of scattering responses from iteratively generated excitations. The method does not require explicit knowledge of any system matrices (<italic>e.g.</italic>, stiffness or impedance matrices) and is well-suited for use with matrix-free and iterative full-wave solvers, such as FDTD (Finite-difference time-domain method), FEM (Finite element method), and MLFMA (Multilevel Fast Multipole Algorithm). The proposed method allows for significant speed-up compared to the direct construction of a full transition matrix or scattering dyadic. The method is applied to the characteristic mode decomposition of arbitrarily shaped obstacles of arbitrary material distribution. Examples demonstrating the speed-up and complexity of the algorithm are studied with several commercial software packages.</p>}}, author = {{Lundgren, Johan and Schab, Kurt and Capek, Miloslav and Gustafsson, Mats and Jelinek, Lukas}}, issn = {{1536-1225}}, keywords = {{Antenna theory; characteristic modes; computational electromagnetics; eigenvalues and eigenfunctions; scattering}}, language = {{eng}}, number = {{4}}, pages = {{799--803}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Antennas and Wireless Propagation Letters}}, title = {{Iterative Calculation of Characteristic Modes Using Arbitrary Full-Wave Solvers}}, url = {{http://dx.doi.org/10.1109/LAWP.2022.3225706}}, doi = {{10.1109/LAWP.2022.3225706}}, volume = {{22}}, year = {{2023}}, }