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Usage of a surface integral representation to reconstruct equivalent currents - with radome applications

Publiceringsår: 2005
Språk: Engelska
Sidor: 6
Publikation/Tidskrift/Serie: Proceedings of Radiovetenskap och kommunikation
Dokumenttyp: Konferensbidrag


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, ie the radome, is analyzed. The transformation is
based on a full vector surface integral representation that relates the
equivalent currents to the near-field data.
Measured near-field data originating from a reflector antenna
is then examined. The field irradiates a radome whereupon it is
measured on a cylindrical surface. The quantity of data is large since
the height of the radome corresponds to $29-43unit{wavelengths}$ in
the frequency interval $8.0-12.0unit{GHz}$. 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).



  • Electrical Engineering, Electronic Engineering, Information Engineering
  • near field to equivalent currents transformation
  • singular value decomposition
  • radome applications
  • surface integral equation
  • arbitrary geometric structures


Nordic Conference on Radio Science and Communications (RVK 05)
Linköping, Sweden
  • Electromagnetic theory
  • ISSN: 91-7056-123-0

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