Thick screens perforated with a periodic array of apertures with arbitrary cross-section
(1999) In Technical Report LUTEDX/(TEAT-7082)/1-30/(1999)- Abstract
- A plane wave impinges on a perfectly conducting thick screen perforated with
a periodic array of apertures with arbitrary cross-section. The transmission
and reflection coefficients are determined by a mode matching technique, earlier
used by other authors for the case where the apertures have the geometry
of a classical waveguide. The fields outside the screen are expanded in
plane waves, while the fields inside the apertures are expanded in waveguide
modes, obtained by the finite element method (FEM). Excellent agreement
between computed and measured transmission is found for a thick screen at
the X-band (8.2−12.4 GHz). Moreover, the present method and the... (More) - A plane wave impinges on a perfectly conducting thick screen perforated with
a periodic array of apertures with arbitrary cross-section. The transmission
and reflection coefficients are determined by a mode matching technique, earlier
used by other authors for the case where the apertures have the geometry
of a classical waveguide. The fields outside the screen are expanded in
plane waves, while the fields inside the apertures are expanded in waveguide
modes, obtained by the finite element method (FEM). Excellent agreement
between computed and measured transmission is found for a thick screen at
the X-band (8.2−12.4 GHz). Moreover, the present method and the spectral
Galerkin method (which assumes that the thickness of the screen is zero) is
compared for very thin screens, e.g., for a frequency selective surface (FSS).
Investigation of the thickness dependence is also done, and it is found that the
bandwidth decreases when the thickness of the screen is increased. Finally
two complex geometries, hexagonal and tripole apertures, are studied. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/530487
- author
- Widenberg, Björn LU ; Poulsen, Sören LU and Karlsson, Anders LU
- organization
- publishing date
- 1999
- type
- Book/Report
- publication status
- published
- subject
- in
- Technical Report LUTEDX/(TEAT-7082)/1-30/(1999)
- pages
- 30 pages
- publisher
- [Publisher information missing]
- report number
- TEAT-7082
- language
- English
- LU publication?
- yes
- additional info
- Published version: Journal of electromagnetic waves and applications, Vol. 14, No. 9, pp. 1303-28, 2000
- id
- bdde168b-cb3a-428d-9c93-dbb08b6251fc (old id 530487)
- date added to LUP
- 2016-04-04 14:38:09
- date last changed
- 2018-11-21 21:21:27
@techreport{bdde168b-cb3a-428d-9c93-dbb08b6251fc,
abstract = {{A plane wave impinges on a perfectly conducting thick screen perforated with<br/><br>
a periodic array of apertures with arbitrary cross-section. The transmission<br/><br>
and reflection coefficients are determined by a mode matching technique, earlier<br/><br>
used by other authors for the case where the apertures have the geometry<br/><br>
of a classical waveguide. The fields outside the screen are expanded in<br/><br>
plane waves, while the fields inside the apertures are expanded in waveguide<br/><br>
modes, obtained by the finite element method (FEM). Excellent agreement<br/><br>
between computed and measured transmission is found for a thick screen at<br/><br>
the X-band (8.2−12.4 GHz). Moreover, the present method and the spectral<br/><br>
Galerkin method (which assumes that the thickness of the screen is zero) is<br/><br>
compared for very thin screens, e.g., for a frequency selective surface (FSS).<br/><br>
Investigation of the thickness dependence is also done, and it is found that the<br/><br>
bandwidth decreases when the thickness of the screen is increased. Finally<br/><br>
two complex geometries, hexagonal and tripole apertures, are studied.}},
author = {{Widenberg, Björn and Poulsen, Sören and Karlsson, Anders}},
institution = {{[Publisher information missing]}},
language = {{eng}},
number = {{TEAT-7082}},
series = {{Technical Report LUTEDX/(TEAT-7082)/1-30/(1999)}},
title = {{Thick screens perforated with a periodic array of apertures with arbitrary cross-section}},
url = {{https://lup.lub.lu.se/search/files/6405884/624913.pdf}},
year = {{1999}},
}