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Physical bounds and optimal currents on antennas

Gustafsson, Mats LU ; Cismasu, Marius LU and Jonsson, Lars (2012) In IEEE Transactions on Antennas and Propagation 60(6). p.2672-2681
Abstract
Physical bounds on the directivity Q-factor quotient and optimal current distributions are determined for antennas of arbitrary shape and size using an optimization formulation. A variational approach offers closed form solutions for small antennas expressed in the polarizability of the antenna structure. Finite sized antennas are solved using Lagrangian parameters in a method of moments formulation.

It is also shown that the optimal charge density for a small antenna can be generated by several current densities. Numerical examples for small and large antennas are used to illustrate the results.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Antenna theory, Physical limitations, Antenna Q, Polarizability
in
IEEE Transactions on Antennas and Propagation
volume
60
issue
6
pages
2672 - 2681
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000304909800008
  • scopus:84861892765
ISSN
0018-926X
DOI
10.1109/TAP.2012.2194658
language
English
LU publication?
yes
id
56ab79c4-0947-4f74-ba23-db8d544a5ffc (old id 2202894)
date added to LUP
2011-11-07 11:14:03
date last changed
2017-11-12 04:12:22
@article{56ab79c4-0947-4f74-ba23-db8d544a5ffc,
  abstract     = {Physical bounds on the directivity Q-factor quotient and optimal current distributions are determined for antennas of arbitrary shape and size using an optimization formulation. A variational approach offers closed form solutions for small antennas expressed in the polarizability of the antenna structure. Finite sized antennas are solved using Lagrangian parameters in a method of moments formulation. <br/><br>
It is also shown that the optimal charge density for a small antenna can be generated by several current densities. Numerical examples for small and large antennas are used to illustrate the results.},
  author       = {Gustafsson, Mats and Cismasu, Marius and Jonsson, Lars},
  issn         = {0018-926X},
  keyword      = {Antenna theory,Physical limitations,Antenna Q,Polarizability},
  language     = {eng},
  number       = {6},
  pages        = {2672--2681},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Antennas and Propagation},
  title        = {Physical bounds and optimal currents on antennas},
  url          = {http://dx.doi.org/10.1109/TAP.2012.2194658},
  volume       = {60},
  year         = {2012},
}