Methods for noise reduction in far-field patterns obtained from cylindrical near-field antenna measurements

Cano Facila, Francisco Jose y Sierra Castañer, Manuel (2012). Methods for noise reduction in far-field patterns obtained from cylindrical near-field antenna measurements. "IEEE Transactions on Antennas And Propagation", v. 60 (n. 12); pp. 5635-5644. ISSN 0018-926X. https://doi.org/10.1109/TAP.2012.2208613.

Descripción

Título: Methods for noise reduction in far-field patterns obtained from cylindrical near-field antenna measurements
Autor/es:
  • Cano Facila, Francisco Jose
  • Sierra Castañer, Manuel
Tipo de Documento: Artículo
Título de Revista/Publicación: IEEE Transactions on Antennas And Propagation
Fecha: Diciembre 2012
Volumen: 60
Materias:
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

Two different methods to reduce the noise power in the far-field pattern of an antenna as measured in cylindrical near-field (CNF) are proposed. Both methods are based on the same principle: the data recorded in the CNF measurement, assumed to be corrupted by white Gaussian and space-stationary noise, are transformed into a new domain where it is possible to filter out a portion of noise. Those filtered data are then used to calculate a far-field pattern with less noise power than that one obtained from the measured data without applying any filtering. Statistical analyses are carried out to deduce the expressions of the signal-to-noise ratio improvement achieved with each method. Although the idea of the two alternatives is the same, there are important differences between them. The first one applies a modal filtering, requires an oversampling and improves the far-field pattern in all directions. The second method employs a spatial filtering on the antenna plane, does not require oversampling and the far-field pattern is only improved in the forward hemisphere. Several examples are presented using both simulated and measured near-field data to verify the effectiveness of the methods.

Más información

ID de Registro: 16259
Identificador DC: http://oa.upm.es/16259/
Identificador OAI: oai:oa.upm.es:16259
Identificador DOI: 10.1109/TAP.2012.2208613
URL Oficial: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6239568
Depositado por: Memoria Investigacion
Depositado el: 09 Jul 2013 17:57
Ultima Modificación: 21 Abr 2016 16:34
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