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Communications at congresses:
Novel method to improve the signal to noise ratio in the far-field results obtained from planar near field measurements
Year:2010
Research Areas
  • Telecommunications
Information
Abstract
A method to reduce the noise power in far-field pattern without modifying the desired signal is proposed. Therefore, an important signal-to-noise ratio improvement may be achieved. The method is used when the antenna measurement is performed in planar nearfield, where the recorded data are assumed to be corrupted with white Gaussian and space-stationary noise, because of the receiver additive noise. Back-propagating the measured field from the scan plane to the antenna under test (AUT) plane, the noise remains white Gaussian and space-stationary, whereas the desired field is theoretically concentrated in the aperture antenna. Thanks to this fact, a spatial filtering may be applied, cancelling the field which is located out of the AUT dimensions and which is only composed by noise. Next, a planar field to far-field transformation is carried out, achieving a great improvement compared to the pattern obtained directly from the measurement. To verify the effectiveness of the method, two examples will be presented using both simulated and measured near-field data.
International
Si
Congress
Antenna Measurement Techniques Association Europe (AMTA) 2010
960
Place
Atlanta, Georgia, EEUU
Reviewers
Si
ISBN/ISSN
Start Date
31/10/2010
End Date
04/10/2010
From page
388
To page
393
AMTA Proceedings
Participants
  • Autor: Manuel Sierra Castañer (UPM)
  • Autor: Jose Luis Besada Sanmartin (UPM)
  • Autor: Francisco José Cano Facila (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Radiación
  • Departamento: Señales, Sistemas y Radiocomunicaciones
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