Memorias de investigación
Research Publications in journals:
Novel method to improve the signal-to-noise ratio in the far-field results obtained from planar near-field measurements
Year:2011
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 near-field, 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
JCR
Si
Title
IEEE antennas & propagation magazine
ISBN
1045-9243
Impact factor JCR
0,855
Impact info
Volume
52
Journal number
2
From page
215
To page
220
Month
ABRIL
Ranking
Participants
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Radiación
  • Departamento: Señales, Sistemas y Radiocomunicaciones