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Dissipation Factors of Spherical Current Modes on Multiple Spherical Layers

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

Radiation efficiencies of modal current densities distributed on a spherical shell are evaluated in terms of dissipation factor. The presented approach is rigorous, yet simple and straightforward, leading to closed-form expressions. The same approach is utilized for a two-layered shell and the results are compared with other models existing in the literature. Discrepancies in this comparison are reported and reasons are analyzed. Finally, it is demonstrated that radiation efficiency potentially benefits from the use of internal volume which contrasts with the case of the radiation Q-factor.

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author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Antenna theory, Optimization methods, Radiation efficiency
in
IEEE Transactions on Antennas and Propagation
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85047624474
ISSN
0018-926X
DOI
10.1109/TAP.2018.2841408
language
English
LU publication?
yes
id
48fe49d1-e055-46e0-91b4-bf92e769b128
date added to LUP
2018-06-13 13:07:00
date last changed
2018-06-13 13:07:00
@article{48fe49d1-e055-46e0-91b4-bf92e769b128,
  abstract     = {<p>Radiation efficiencies of modal current densities distributed on a spherical shell are evaluated in terms of dissipation factor. The presented approach is rigorous, yet simple and straightforward, leading to closed-form expressions. The same approach is utilized for a two-layered shell and the results are compared with other models existing in the literature. Discrepancies in this comparison are reported and reasons are analyzed. Finally, it is demonstrated that radiation efficiency potentially benefits from the use of internal volume which contrasts with the case of the radiation Q-factor.</p>},
  author       = {Losenicky, Vit and Jelinek, Lukas and Capek, Miloslav and Gustafsson, Mats},
  issn         = {0018-926X},
  keyword      = {Antenna theory,Optimization methods,Radiation efficiency},
  language     = {eng},
  month        = {05},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Antennas and Propagation},
  title        = {Dissipation Factors of Spherical Current Modes on Multiple Spherical Layers},
  url          = {http://dx.doi.org/10.1109/TAP.2018.2841408},
  year         = {2018},
}