Physical limitations on antennas: isoperimetric inequalities and the effect of metamaterials
(2007) International Conference on Applied Electromagnetics and Communications 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:
https://lup.lub.lu.se/record/827207
- author
- Sohl, Christian
LU
; Gustafsson, Mats
LU
and Kristensson, Gerhard LU
- organization
- publishing date
- 2007
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- [Host publication title missing]
- pages
- 75 - 79
- conference name
- International Conference on Applied Electromagnetics and Communications
- conference location
- Dubrovnik, Croatia
- conference dates
- 2007-09-24 - 2007-09-26
- 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
- 2016-04-04 14:02:23
- date last changed
- 2022-01-30 01:23:22
@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}}, doi = {{10.1109/ICECOM.2007.4544423}}, year = {{2007}}, }