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Optimal Planar Electric Dipole Antennas: Searching for antennas reaching the fundamental bounds on selected metrics

Capek, Miloslav LU ; Jelinek, Lukas ; Gustafsson, Mats LU orcid ; Schab, Kurt LU ; Jonsson, B. L. G. and Ehrenborg, Casimir LU orcid (2019) In IEEE Antennas and Propagation Magazine 61(4).
Abstract
Considerable time is often spent optimizing antennas to meet specific design metrics. Rarely, however, are the resulting antenna designs compared to rigorous physical bounds on those metrics. Here, we study the performance of optimized planar meander line antennas with respect to such bounds. Results show that these simple structures meet the lower bound on the radiation quality factor (Q-factor) (maximizing single-resonance fractional bandwidth) but are far from reaching the associated physical bounds for efficiency. The relative performance of other canonical antenna designs is comparable in similar ways, and the quantitative results are connected to intuitions from small antenna design, physical bounds, and matching network design.
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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Antennas and Propagation Magazine
volume
61
issue
4
publisher
IEEE Computer Society
ISSN
1045-9243
DOI
10.1109/MAP.2019.2920088
language
English
LU publication?
yes
id
90497dcd-10dc-4ab4-9991-1fe48e7a0fe4
date added to LUP
2024-03-04 16:48:41
date last changed
2024-03-06 16:11:57
@article{90497dcd-10dc-4ab4-9991-1fe48e7a0fe4,
  abstract     = {{Considerable time is often spent optimizing antennas to meet specific design metrics. Rarely, however, are the resulting antenna designs compared to rigorous physical bounds on those metrics. Here, we study the performance of optimized planar meander line antennas with respect to such bounds. Results show that these simple structures meet the lower bound on the radiation quality factor (Q-factor) (maximizing single-resonance fractional bandwidth) but are far from reaching the associated physical bounds for efficiency. The relative performance of other canonical antenna designs is comparable in similar ways, and the quantitative results are connected to intuitions from small antenna design, physical bounds, and matching network design.}},
  author       = {{Capek, Miloslav and Jelinek, Lukas and Gustafsson, Mats and Schab, Kurt and Jonsson, B. L. G. and Ehrenborg, Casimir}},
  issn         = {{1045-9243}},
  language     = {{eng}},
  number       = {{4}},
  publisher    = {{IEEE Computer Society}},
  series       = {{IEEE Antennas and Propagation Magazine}},
  title        = {{Optimal Planar Electric Dipole Antennas: Searching for antennas reaching the fundamental bounds on selected metrics}},
  url          = {{http://dx.doi.org/10.1109/MAP.2019.2920088}},
  doi          = {{10.1109/MAP.2019.2920088}},
  volume       = {{61}},
  year         = {{2019}},
}