Stored Energies and Q-factor expressed in Material derivatives
(2024) In IEEE Antennas and Wireless Propagation Letters 23(1). p.19-23- Abstract
- Stored energies of radiating systems have generated research interest for several decades due to their relationship with Q-factor and fractional bandwidth. In this paper material derivatives are used to provide a new interpretation of widely used stored energy expressions. This provides a fundamental relationship between stored energies of radiating systems and their electromagnetic material properties. It is shown that electric stored energy is related to the electric material parameter (permittivity) derivative. Similarly, magnetic stored energy is linked to the derivative of the permeability. Further, as an extension Cauchy-Riemann equations are used to relate stored energy to dissipation.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/b589f9d4-fd65-4347-9b87-3b5ffa15e8e1
- author
- Nel, Ben LU ; Skrivervik, Anja LU and Gustafsson, Mats LU
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- published
- subject
- in
- IEEE Antennas and Wireless Propagation Letters
- volume
- 23
- issue
- 1
- pages
- 19 - 23
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:85171783912
- ISSN
- 1548-5757
- DOI
- 10.1109/LAWP.2023.3314859
- language
- English
- LU publication?
- yes
- id
- b589f9d4-fd65-4347-9b87-3b5ffa15e8e1
- date added to LUP
- 2023-09-08 14:05:02
- date last changed
- 2024-01-09 15:46:28
@article{b589f9d4-fd65-4347-9b87-3b5ffa15e8e1, abstract = {{Stored energies of radiating systems have generated research interest for several decades due to their relationship with Q-factor and fractional bandwidth. In this paper material derivatives are used to provide a new interpretation of widely used stored energy expressions. This provides a fundamental relationship between stored energies of radiating systems and their electromagnetic material properties. It is shown that electric stored energy is related to the electric material parameter (permittivity) derivative. Similarly, magnetic stored energy is linked to the derivative of the permeability. Further, as an extension Cauchy-Riemann equations are used to relate stored energy to dissipation.}}, author = {{Nel, Ben and Skrivervik, Anja and Gustafsson, Mats}}, issn = {{1548-5757}}, language = {{eng}}, number = {{1}}, pages = {{19--23}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Antennas and Wireless Propagation Letters}}, title = {{Stored Energies and Q-factor expressed in Material derivatives}}, url = {{https://lup.lub.lu.se/search/files/157777269/TEAT_7278.pdf}}, doi = {{10.1109/LAWP.2023.3314859}}, volume = {{23}}, year = {{2024}}, }