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

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingResearch

Abstract

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).
Original languageEnglish
Title of host publicationProceedings of Radiovetenskap och kommunikation
Number of pages6
Publication statusPublished - 2005
EventNordic Conference on Radio Science and Communications, 2005 - Linköping, Linköping, Sweden
Duration: 2005 Jun 142005 Jun 16

Conference

ConferenceNordic Conference on Radio Science and Communications, 2005
Abbreviated titleRVK 05
Country/TerritorySweden
CityLinköping
Period2005/06/142005/06/16

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • near field to equivalent currents transformation
  • singular value decomposition
  • radome applications
  • surface integral equation
  • arbitrary geometric structures

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