Physical bounds and optimal currents on antennas
(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:
https://lup.lub.lu.se/record/2202894
- author
- Gustafsson, Mats LU ; Cismasu, Marius LU and Jonsson, Lars
- organization
- publishing date
- 2012
- 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
- 2016-04-04 09:36:36
- date last changed
- 2022-02-06 03:44:53
@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}}, keywords = {{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}}, doi = {{10.1109/TAP.2012.2194658}}, volume = {{60}}, year = {{2012}}, }