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Approximate boundary conditions for thin structures

Karlsson, Anders LU (2009) In IEEE Transactions on Antennas and Propagation1963-01-01+01:00 57(1). p.144-148
Abstract
In wave propagation problems thin structures are often replaced by boundaries of zero thickness, in order to reduce the numerical mesh. The reduction of thickness has to be incorporated in the approximate boundary condition applied to the interface. This paper presents a modification of an approximate boundary condition originally introduced by Mitzner. The modified Mitzner condition can be applied to the boundary of zero thickness and it is more general and accurate than the commonly used impedance boundary condition. For frequency domain solvers the condition is as easy to implement as the impedance boundary condition. It is tested and compared to the impedance boundary condition for planar and cylindrical structures. The new condition... (More)
In wave propagation problems thin structures are often replaced by boundaries of zero thickness, in order to reduce the numerical mesh. The reduction of thickness has to be incorporated in the approximate boundary condition applied to the interface. This paper presents a modification of an approximate boundary condition originally introduced by Mitzner. The modified Mitzner condition can be applied to the boundary of zero thickness and it is more general and accurate than the commonly used impedance boundary condition. For frequency domain solvers the condition is as easy to implement as the impedance boundary condition. It is tested and compared to the impedance boundary condition for planar and cylindrical structures. The new condition is exact at normal incidence on a planar structure. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Transactions on Antennas and Propagation1963-01-01+01:00
volume
57
issue
1
pages
144 - 148
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000264246700016
  • scopus:63149168078
ISSN
0018-926X
DOI
10.1109/TAP.2008.2009720
language
English
LU publication?
yes
id
a396cd91-2e63-4309-9c97-97124acb4114 (old id 1365720)
date added to LUP
2009-03-25 13:28:40
date last changed
2017-08-06 03:58:35
@article{a396cd91-2e63-4309-9c97-97124acb4114,
  abstract     = {In wave propagation problems thin structures are often replaced by boundaries of zero thickness, in order to reduce the numerical mesh. The reduction of thickness has to be incorporated in the approximate boundary condition applied to the interface. This paper presents a modification of an approximate boundary condition originally introduced by Mitzner. The modified Mitzner condition can be applied to the boundary of zero thickness and it is more general and accurate than the commonly used impedance boundary condition. For frequency domain solvers the condition is as easy to implement as the impedance boundary condition. It is tested and compared to the impedance boundary condition for planar and cylindrical structures. The new condition is exact at normal incidence on a planar structure.},
  author       = {Karlsson, Anders},
  issn         = {0018-926X},
  language     = {eng},
  number       = {1},
  pages        = {144--148},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Antennas and Propagation1963-01-01+01:00},
  title        = {Approximate boundary conditions for thin structures},
  url          = {http://dx.doi.org/10.1109/TAP.2008.2009720},
  volume       = {57},
  year         = {2009},
}