Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Characteristic Modes of Nonreciprocal Systems

Wingren, Niklas LU ; Sjoberg, Daniel LU orcid ; Gustafsson, Mats LU orcid ; Lundgren, Johan LU ; Capek, Miloslav LU ; Jelinek, Lukas and Schab, Kurt LU (2024) In IEEE Antennas and Wireless Propagation Letters 23(12). p.4483-4487
Abstract

The scattering formulation of characteristic mode decomposition is utilized to extend modal analysis to lossless scatterers breaking time-reversal symmetry. This enables characteristic modes analysis on devices containing gyrotropic or moving media. The resulting nonreciprocity introduces features not observed in reciprocal scenarios, such as asymmetric phase progression in characteristic far fields. These new phenomena are carefully discussed using examples of varying complexity. Indicators of nonreciprocity based on modal data are also introduced.

Please use this url to cite or link to this publication:
author
; ; ; ; ; and
organization
publishing date
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
23
issue
12
pages
4483 - 4487
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85203436400
ISSN
1536-1225
DOI
10.1109/LAWP.2024.3453211
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2002-2011 IEEE.
id
d909cfb9-ac2d-4b1d-b802-485f0acbc00a
date added to LUP
2024-12-13 12:18:00
date last changed
2025-04-04 15:03:29
@article{d909cfb9-ac2d-4b1d-b802-485f0acbc00a,
  abstract     = {{<p>The scattering formulation of characteristic mode decomposition is utilized to extend modal analysis to lossless scatterers breaking time-reversal symmetry. This enables characteristic modes analysis on devices containing gyrotropic or moving media. The resulting nonreciprocity introduces features not observed in reciprocal scenarios, such as asymmetric phase progression in characteristic far fields. These new phenomena are carefully discussed using examples of varying complexity. Indicators of nonreciprocity based on modal data are also introduced.</p>}},
  author       = {{Wingren, Niklas and Sjoberg, Daniel and Gustafsson, Mats and Lundgren, Johan and Capek, Miloslav and Jelinek, Lukas and Schab, Kurt}},
  issn         = {{1536-1225}},
  keywords     = {{Antenna theory; characteristic modes; computational electromagnetics; eigenvalues and eigenfunctions; scattering}},
  language     = {{eng}},
  number       = {{12}},
  pages        = {{4483--4487}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Antennas and Wireless Propagation Letters}},
  title        = {{Characteristic Modes of Nonreciprocal Systems}},
  url          = {{http://dx.doi.org/10.1109/LAWP.2024.3453211}},
  doi          = {{10.1109/LAWP.2024.3453211}},
  volume       = {{23}},
  year         = {{2024}},
}