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Antenna currents for optimal Q, superdirectivity, and radiation patterns using convex optimization

Gustafsson, Mats LU and Nordebo, Sven LU (2012) In Technical Report LUTEDX/(TEAT-7216)/1-21/(2012) TEAT-7216.
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 give 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-field are presented. The effects of antennas embedded in structures are also discussed. The results are illustrated for planar geometries.
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author
organization
publishing date
type
Book/Report
publication status
published
subject
keywords
Antenna theory, Physical limitations, Antenna Q, Superdirectivity, small antennas, Convex optimization
in
Technical Report LUTEDX/(TEAT-7216)/1-21/(2012)
volume
TEAT-7216
pages
21 pages
publisher
[Publisher information missing]
language
English
LU publication?
yes
id
bc94343a-05be-4735-9101-84768f62ebc1 (old id 2544694)
date added to LUP
2012-05-28 13:35:37
date last changed
2016-04-16 11:35:34
@techreport{bc94343a-05be-4735-9101-84768f62ebc1,
  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 give 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-field 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},
  institution  = {[Publisher information missing]},
  keyword      = {Antenna theory,Physical limitations,Antenna Q,Superdirectivity,small antennas,Convex optimization},
  language     = {eng},
  pages        = {21},
  series       = {Technical Report LUTEDX/(TEAT-7216)/1-21/(2012)},
  title        = {Antenna currents for optimal Q, superdirectivity, and radiation patterns using convex optimization},
  volume       = {TEAT-7216},
  year         = {2012},
}