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

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

Sammanfattning

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).

Nyckelord

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

Övriga

Nordic Conference on Radio Science and Communications, 2005
Published
  • Electromagnetic theory-lup-obsolete
  • ISBN: 91-7056-123-0

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