Experimental validation of reconstructed equivalent currents on a radome
Author
Editor
- Angel Cardama
- Lluis Jofre
- Jordi J. Mallorqui
Summary, in English
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).
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).
Publishing year
2005
Language
English
Pages
35-40
Publication/Series
[Host publication title missing]
Document type
Conference paper
Publisher
CIMNE
Topic
- Electrical Engineering, Electronic Engineering, Information Engineering
Keywords
- surface integral equation
- singular value decomposition
- arbitrary geometric structures
- radome applications
- near field to equivalent currents transformation
Conference name
International Conference on Electromagnetic Near-Field Characterization & Imaging (ICONIC 2005)
Conference date
2005-06-08 - 2005-06-10
Conference place
Barcelona, Spain
Status
Published
Research group
- Electromagnetic theory
ISBN/ISSN/Other
- ISBN: 84-95999-72-2