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Experimental validation of reconstructed equivalent currents on a radome

  • Angel Cardama
  • Lluis Jofre
  • Jordi J. Mallorqui
Publiceringsår: 2005
Språk: Engelska
Sidor: 35-40
Dokumenttyp: Konferensbidrag
Förlag: International Center for Numerical Methods in Engineering (CIMNE)


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).



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


International Conference on Electromagnetic Near-Field Characterization & Imaging (ICONIC 2005)
Barcelona, Spain
  • Electromagnetic theory
  • ISSN: 84-95999-72-2

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