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

Cano Facila, Francisco Jose; Burgos, S.; Sierra Castañer, Manuel y 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.. En: "Antenna Measurement Techniques Association Symposium 2010, AMTA 2010", 31/10/2010 - 04/10/2010, Atlanta, Georgia, EEUU. ISBN 9781617821189.

Descripción

Título: Novel Method to Improve the Signal to Noise Ratio in the Far-field Results Obtained from Planar Near Field Measurements.
Autor/es:
  • Cano Facila, Francisco Jose
  • Burgos, S.
  • Sierra Castañer, Manuel
  • Besada Sanmartin, Jose Luis
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: Antenna Measurement Techniques Association Symposium 2010, AMTA 2010
Fechas del Evento: 31/10/2010 - 04/10/2010
Lugar del Evento: Atlanta, Georgia, EEUU
Título del Libro: Proceedings Antenna Measurement Techniques Association Symposium 2010, AMTA 2010
Fecha: 2010
ISBN: 9781617821189
Materias:
Palabras Clave Informales: Anechoic chamber, antenna measurements, back propagation, filtering, Gaussian noise.
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Señales, Sistemas y Radiocomunicaciones
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 8249
Identificador DC: http://oa.upm.es/8249/
Identificador OAI: oai:oa.upm.es:8249
URL Oficial: http://www.proceedings.com/10095.html
Depositado por: Memoria Investigacion
Depositado el: 01 Ago 2011 11:11
Ultima Modificación: 20 Abr 2016 17:06
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