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Experimental validation of reconstructed equivalent currents on a radome

Författare:
Redaktör:
  • Angel Cardama
  • Lluis Jofre
  • Jordi J. Mallorqui
Publiceringsår: 2005
Språk: Engelska
Sidor: 35-40
Publikation/Tidskrift/Serie: [Host publication title missing]
Dokumenttyp: Konferensbidrag
Förlag: CIMNE

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 vector surface integral representation that relates the

equivalent currents to the near-field data. Experimental verification using

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 29-43,,wavelengths in

the frequency interval 8.0-12.0,,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
  • surface integral equation
  • singular value decomposition
  • arbitrary geometric structures
  • radome applications
  • near field to equivalent currents transformation

Övriga

International Conference on Electromagnetic Near-Field Characterization & Imaging (ICONIC 2005)
Published
  • Electromagnetic theory-lup-obsolete
  • ISBN: 84-95999-72-2

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