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Capacitive circuit method for fast and efficient design of wideband radar absorber

Kazemzadeh, Alireza LU and Karlsson, Anders LU (2009) In IEEE Transactions on Antennas and Propagation 57(8). p.2307-2314
Abstract
A simple, fast and efficient method for designing wideband radar absorbers is proposed. The idea is to modify the circuit analog absorber method without perturbing the bandwidth. This is done by utilizing the asymptotic behavior of such an absorber at low frequency and replacing the band-stop resonating frequency selective surfaces with low-pass capacitive ones, which can be synthesized by square patches. It is shown that higher frequencies are not influenced by these modifications. A thin wideband capacitive circuit absorber (CCA) is presented with 28% reduction of thickness and 57% increase of bandwidth in comparison to the Salisbury screen. It is also explained why some optimized metamaterial designs fail to compete with the CCA method.... (More)
A simple, fast and efficient method for designing wideband radar absorbers is proposed. The idea is to modify the circuit analog absorber method without perturbing the bandwidth. This is done by utilizing the asymptotic behavior of such an absorber at low frequency and replacing the band-stop resonating frequency selective surfaces with low-pass capacitive ones, which can be synthesized by square patches. It is shown that higher frequencies are not influenced by these modifications. A thin wideband capacitive circuit absorber (CCA) is presented with 28% reduction of thickness and 57% increase of bandwidth in comparison to the Salisbury screen. It is also explained why some optimized metamaterial designs fail to compete with the CCA method. For high permittivity layers, it is shown that the CCA is a better solution than the Jaumann absorber and improvements both in thickness and bandwidth are possible. A three layered ultrawideband CCA is presented with total thickness of 15.1 mm. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Capacitive circuit absorber (CCA), Jaumann absorber, circuit analog absorber, lossy frequency selective surfaces, metamaterial, thin absorber
in
IEEE Transactions on Antennas and Propagation
volume
57
issue
8
pages
2307 - 2314
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000268756100009
  • scopus:68949220253
ISSN
0018-926X
DOI
10.1109/TAP.2009.2024490
language
English
LU publication?
yes
id
11d24a9e-5739-4d58-a694-c340efd215ed (old id 1454153)
date added to LUP
2009-08-06 14:56:44
date last changed
2017-07-23 05:01:24
@article{11d24a9e-5739-4d58-a694-c340efd215ed,
  abstract     = {A simple, fast and efficient method for designing wideband radar absorbers is proposed. The idea is to modify the circuit analog absorber method without perturbing the bandwidth. This is done by utilizing the asymptotic behavior of such an absorber at low frequency and replacing the band-stop resonating frequency selective surfaces with low-pass capacitive ones, which can be synthesized by square patches. It is shown that higher frequencies are not influenced by these modifications. A thin wideband capacitive circuit absorber (CCA) is presented with 28% reduction of thickness and 57% increase of bandwidth in comparison to the Salisbury screen. It is also explained why some optimized metamaterial designs fail to compete with the CCA method. For high permittivity layers, it is shown that the CCA is a better solution than the Jaumann absorber and improvements both in thickness and bandwidth are possible. A three layered ultrawideband CCA is presented with total thickness of 15.1 mm.},
  author       = {Kazemzadeh, Alireza and Karlsson, Anders},
  issn         = {0018-926X},
  keyword      = {Capacitive circuit absorber (CCA),Jaumann absorber,circuit analog absorber,lossy frequency selective surfaces,metamaterial,thin absorber},
  language     = {eng},
  number       = {8},
  pages        = {2307--2314},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Antennas and Propagation},
  title        = {Capacitive circuit method for fast and efficient design of wideband radar absorber},
  url          = {http://dx.doi.org/10.1109/TAP.2009.2024490},
  volume       = {57},
  year         = {2009},
}