Advanced

Physical limitations on antennas: isoperimetric inequalities and the effect of metamaterials

Sohl, Christian LU ; Gustafsson, Mats LU and Kristensson, Gerhard LU (2007) International Conference on Applied Electromagnetics and Communications In [Host publication title missing] p.75-79
Abstract
In this paper, physical limitations on antennas are presented based on the holomorphic properties of the forward scattering dyadic. As a direct consequence of causality and energy conservation, a forward dispersion relation for the extinction cross section is established, and isoperimetric inequalities for the partial realized gain and partial directivity are derived for antennas of

arbitrary shape. Closed-form expressions for the prolate and oblate spheroids are compared with Chu's classical result for the sphere, and the effect of invoking metamaterials in the antenna design is discussed. The theory is illustrated by numerical simulations of a monopole antenna with a finite ground plane.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
[Host publication title missing]
pages
75 - 79
conference name
International Conference on Applied Electromagnetics and Communications
external identifiers
  • wos:000256621300017
  • scopus:51049100155
ISBN
978-953-6037-50-6
DOI
10.1109/ICECOM.2007.4544423
project
EIT_HSWC:Antenna MIMO antennas and channels
language
English
LU publication?
yes
id
c383c4d4-bf81-4c3d-aece-6dc439a66257 (old id 827207)
alternative location
http://ieeexplore.ieee.org/xpls/abs_all.jsp?isnumber=4544406&arnumber=4544423
date added to LUP
2008-01-09 15:32:30
date last changed
2017-04-23 04:47:22
@inproceedings{c383c4d4-bf81-4c3d-aece-6dc439a66257,
  abstract     = {In this paper, physical limitations on antennas are presented based on the holomorphic properties of the forward scattering dyadic. As a direct consequence of causality and energy conservation, a forward dispersion relation for the extinction cross section is established, and isoperimetric inequalities for the partial realized gain and partial directivity are derived for antennas of<br/><br>
arbitrary shape. Closed-form expressions for the prolate and oblate spheroids are compared with Chu's classical result for the sphere, and the effect of invoking metamaterials in the antenna design is discussed. The theory is illustrated by numerical simulations of a monopole antenna with a finite ground plane.},
  author       = {Sohl, Christian and Gustafsson, Mats and Kristensson, Gerhard},
  booktitle    = {[Host publication title missing]},
  isbn         = {978-953-6037-50-6},
  language     = {eng},
  pages        = {75--79},
  title        = {Physical limitations on antennas: isoperimetric inequalities and the effect of metamaterials},
  url          = {http://dx.doi.org/10.1109/ICECOM.2007.4544423},
  year         = {2007},
}