Meny

Du är här

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

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).

Disputation

Nyckelord

  • Technology and 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 (RVK 05)
2005-06-14/2005-06-16
Linköping, Sweden
Published
  • Electromagnetic theory
  • ISSN: 91-7056-123-0

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen