Novel Method to Improve the Signal to Noise Ratio in the Far-field Results Obtained from Planar Near Field Measurements.

Cano Facila, Francisco Jose and Burgos, S. and Sierra Castañer, Manuel and Besada Sanmartin, Jose Luis (2010). Novel Method to Improve the Signal to Noise Ratio in the Far-field Results Obtained from Planar Near Field Measurements.. In: "Antenna Measurement Techniques Association Symposium 2010, AMTA 2010", 31/10/2010 - 04/10/2010, Atlanta, Georgia, EEUU. ISBN 9781617821189.

Description

Title: Novel Method to Improve the Signal to Noise Ratio in the Far-field Results Obtained from Planar Near Field Measurements.
Author/s:
  • Cano Facila, Francisco Jose
  • Burgos, S.
  • Sierra Castañer, Manuel
  • Besada Sanmartin, Jose Luis
Item Type: Presentation at Congress or Conference (Article)
Event Title: Antenna Measurement Techniques Association Symposium 2010, AMTA 2010
Event Dates: 31/10/2010 - 04/10/2010
Event Location: Atlanta, Georgia, EEUU
Title of Book: Proceedings Antenna Measurement Techniques Association Symposium 2010, AMTA 2010
Date: 2010
ISBN: 9781617821189
Subjects:
Freetext Keywords: Anechoic chamber, antenna measurements, back propagation, filtering, Gaussian noise.
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Señales, Sistemas y Radiocomunicaciones
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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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.

More information

Item ID: 8249
DC Identifier: http://oa.upm.es/8249/
OAI Identifier: oai:oa.upm.es:8249
Official URL: http://www.proceedings.com/10095.html
Deposited by: Memoria Investigacion
Deposited on: 01 Aug 2011 11:11
Last Modified: 20 Apr 2016 17:06
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