Reconstruction of Equivalent currents Using the Scalar Surface Integral Representation
Persson, Kristin LU and Gustafsson, Mats LU
(2005)
In Technical Report LUTEDX/(TEAT-7131)/1-25/(2005)
- Abstract
- Knowledge of the current distribution on a radome can be used to improve
radome design, detect manufacturing errors, and to verify numerical simulations.
In this paper, the transformation from near-field data to its equivalent
current distribution on a surface of arbitrary material, i.e., the radome, is
analyzed. The transformation is based on the scalar surface integral representation
that relates the equivalent currents to the near-field data. The presence
of axial symmetry enables usage of the fast Fourier transform (FFT) to reduce
the computational complexity. Furthermore, the problem is regularized using
the singular value decomposition (SVD). Both synthetic and... (More) - Knowledge of the current distribution on a radome can be used to improve
radome design, detect manufacturing errors, and to verify numerical simulations.
In this paper, the transformation from near-field data to its equivalent
current distribution on a surface of arbitrary material, i.e., the radome, is
analyzed. The transformation is based on the scalar surface integral representation
that relates the equivalent currents to the near-field data. The presence
of axial symmetry enables usage of the fast Fourier transform (FFT) to reduce
the computational complexity. Furthermore, the problem is regularized using
the singular value decomposition (SVD). Both synthetic and measured data
are used to verify the method. The quantity of data is large since the height
of the radome corresponds to 29 − 43wavelengths in the frequency interval
8.0 − 12.0GHz. It is shown that the method gives an accurate description
of the field radiated from an antenna, on a surface enclosing it. Moreover,
disturbances introduced by copper plates attached to the radome surface, not
localized in the measured near field, are focused and detectable in the equivalent
currents. The method also enables us to determine the phase shift of the
field due to the passage of the radome, cf. the insertion phase delay. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/530316
- author
- Persson, Kristin
LU
and Gustafsson, Mats
LU
- organization
- publishing date
- 2005
- type
- Book/Report
- publication status
- published
- subject
- keywords
- arbitrary geometric structures, surface integral equation, singular value decomposition, near field to equivalent currents transformation, radome applications
- in
- Technical Report LUTEDX/(TEAT-7131)/1-25/(2005)
- pages
- 25 pages
- publisher
- [Publisher information missing]
- report number
- TEAT-7131
- language
- English
- LU publication?
- yes
- additional info
- Published version: Electromagnetic Waves PIER 54, Ed. J.A. Kong, pp. 179-198, EMW Publishing, Cambridge, Massachusetts, USA, 2005.
- id
- 9e9738f9-fbd4-4d4f-a457-25fafbf136a3 (old id 530316)
- date added to LUP
- 2016-04-04 13:10:39
- date last changed
- 2018-11-21 21:12:34
@techreport{9e9738f9-fbd4-4d4f-a457-25fafbf136a3,
abstract = {{Knowledge of the current distribution on a radome can be used to improve<br/><br>
radome design, detect manufacturing errors, and to verify numerical simulations.<br/><br>
In this paper, the transformation from near-field data to its equivalent<br/><br>
current distribution on a surface of arbitrary material, i.e., the radome, is<br/><br>
analyzed. The transformation is based on the scalar surface integral representation<br/><br>
that relates the equivalent currents to the near-field data. The presence<br/><br>
of axial symmetry enables usage of the fast Fourier transform (FFT) to reduce<br/><br>
the computational complexity. Furthermore, the problem is regularized using<br/><br>
the singular value decomposition (SVD). Both synthetic and measured data<br/><br>
are used to verify the method. The quantity of data is large since the height<br/><br>
of the radome corresponds to 29 − 43wavelengths in the frequency interval<br/><br>
8.0 − 12.0GHz. It is shown that the method gives an accurate description<br/><br>
of the field radiated from an antenna, on a surface enclosing it. Moreover,<br/><br>
disturbances introduced by copper plates attached to the radome surface, not<br/><br>
localized in the measured near field, are focused and detectable in the equivalent<br/><br>
currents. The method also enables us to determine the phase shift of the<br/><br>
field due to the passage of the radome, cf. the insertion phase delay.}},
author = {{Persson, Kristin and Gustafsson, Mats}},
institution = {{[Publisher information missing]}},
keywords = {{arbitrary geometric structures; surface integral equation; singular value decomposition; near field to equivalent currents transformation; radome applications}},
language = {{eng}},
number = {{TEAT-7131}},
series = {{Technical Report LUTEDX/(TEAT-7131)/1-25/(2005)}},
title = {{Reconstruction of Equivalent currents Using the Scalar Surface Integral Representation}},
url = {{https://lup.lub.lu.se/search/files/6065576/1527868.pdf}},
year = {{2005}},
}