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Electromagnetic scattering by layered cylinders --- low frequency reduction of RCS

Kristensson, Gerhard LU (2015) In Technical Report LUTEDX/(TEAT-7237)/1-11/(2015) TEAT-7237.
Abstract
In this paper we present two different ways of reducing the radar cross section (RCS) of thin metallic wires at low frequencies. This reduction is achieved by adding a dielectric coating on the wire. The entire cylindrical structure is finally protected by a thin exterior non-magnetic dielectric layer (eagle skin).

The contribution to the RCS has either an electric or an magnetic origin. To reduce the RCS it is possible to chose material parameters so that both the electric and the magnetic contributions vanish. This leads, however, to non-physical material parameter values. The underlying principle in the second method is to chose material parameters in the dielectric coating such that the electric and magnetic contributions... (More)
In this paper we present two different ways of reducing the radar cross section (RCS) of thin metallic wires at low frequencies. This reduction is achieved by adding a dielectric coating on the wire. The entire cylindrical structure is finally protected by a thin exterior non-magnetic dielectric layer (eagle skin).

The contribution to the RCS has either an electric or an magnetic origin. To reduce the RCS it is possible to chose material parameters so that both the electric and the magnetic contributions vanish. This leads, however, to non-physical material parameter values. The underlying principle in the second method is to chose material parameters in the dielectric coating such that the electric and magnetic contributions annihilate each other. Fortunately, this annihilation can be obtained with physically realistic material parameters.

Explicit numerical examples illustrate both ideas. (Less)
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Book/Report
publication status
published
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in
Technical Report LUTEDX/(TEAT-7237)/1-11/(2015)
volume
TEAT-7237
pages
11 pages
publisher
[Publisher information missing]
language
English
LU publication?
yes
id
5866134d-d0b1-4f2f-8a6f-6c61b4286ebd (old id 8411081)
date added to LUP
2015-12-21 10:15:51
date last changed
2016-04-16 12:29:53
@misc{5866134d-d0b1-4f2f-8a6f-6c61b4286ebd,
  abstract     = {In this paper we present two different ways of reducing the radar cross section (RCS) of thin metallic wires at low frequencies. This reduction is achieved by adding a dielectric coating on the wire. The entire cylindrical structure is finally protected by a thin exterior non-magnetic dielectric layer (eagle skin).<br/><br>
 The contribution to the RCS has either an electric or an magnetic origin. To reduce the RCS it is possible to chose material parameters so that both the electric and the magnetic contributions vanish. This leads, however, to non-physical material parameter values. The underlying principle in the second method is to chose material parameters in the dielectric coating such that the electric and magnetic contributions annihilate each other. Fortunately, this annihilation can be obtained with physically realistic material parameters.<br/><br>
 Explicit numerical examples illustrate both ideas.},
  author       = {Kristensson, Gerhard},
  language     = {eng},
  pages        = {11},
  publisher    = {ARRAY(0x9bb98c8)},
  series       = {Technical Report LUTEDX/(TEAT-7237)/1-11/(2015)},
  title        = {Electromagnetic scattering by layered cylinders --- low frequency reduction of RCS},
  volume       = {TEAT-7237},
  year         = {2015},
}