Optimal antenna currents for Q, superdirectivity, and radiation patterns using convex optimization
(2013) In IEEE Transactions on Antennas and Propagation 61(3). p.1109-1118- Abstract
- The high Q-factor (low bandwidth) and low efficiency make the design of small antennas challenging. Here, convex optimization is used to determine current distributions that provide upper bounds on the antenna performance. Optimization formulations for maximal gain Q-factor quotient, minimal Q-factor for superdirectivity, and minimum Q for given far-fields are presented. The effects of antennas embedded in structures are also discussed. The results are illustrated for planar geometries.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3132025
- author
- Gustafsson, Mats LU and Nordebo, Sven LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- small antennas, convex optimization, Q-factor
- in
- IEEE Transactions on Antennas and Propagation
- volume
- 61
- issue
- 3
- pages
- 1109 - 1118
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- wos:000315958300012
- scopus:84874852140
- ISSN
- 0018-926X
- DOI
- 10.1109/TAP.2012.2227656
- language
- English
- LU publication?
- yes
- id
- bd95199d-faed-4a92-81bd-7c4a0143a5a9 (old id 3132025)
- date added to LUP
- 2016-04-01 13:58:58
- date last changed
- 2022-04-14 07:24:51
@article{bd95199d-faed-4a92-81bd-7c4a0143a5a9, abstract = {{The high Q-factor (low bandwidth) and low efficiency make the design of small antennas challenging. Here, convex optimization is used to determine current distributions that provide upper bounds on the antenna performance. Optimization formulations for maximal gain Q-factor quotient, minimal Q-factor for superdirectivity, and minimum Q for given far-fields are presented. The effects of antennas embedded in structures are also discussed. The results are illustrated for planar geometries.}}, author = {{Gustafsson, Mats and Nordebo, Sven}}, issn = {{0018-926X}}, keywords = {{small antennas; convex optimization; Q-factor}}, language = {{eng}}, number = {{3}}, pages = {{1109--1118}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Transactions on Antennas and Propagation}}, title = {{Optimal antenna currents for Q, superdirectivity, and radiation patterns using convex optimization}}, url = {{http://dx.doi.org/10.1109/TAP.2012.2227656}}, doi = {{10.1109/TAP.2012.2227656}}, volume = {{61}}, year = {{2013}}, }