New methods to reduce leakage errors in planar near-field measurements

Cano Facila, Francisco Jose and Burgos Martínez, Sara and Sierra Castañer, Manuel (2011). New methods to reduce leakage errors in planar near-field measurements. In: "5th European Conference on Antennas and Propagation, EUCAP2011", 10/04/2011 - 15/04/2011, Roma, Italia. ISBN 978-1-4577-0250-1.

Description

Title: New methods to reduce leakage errors in planar near-field measurements
Author/s:
  • Cano Facila, Francisco Jose
  • Burgos Martínez, Sara
  • Sierra Castañer, Manuel
Item Type: Presentation at Congress or Conference (Article)
Event Title: 5th European Conference on Antennas and Propagation, EUCAP2011
Event Dates: 10/04/2011 - 15/04/2011
Event Location: Roma, Italia
Title of Book: Proceedings of the 5th European Conference on Antennas and Propagation, EUCAP2011
Date: 2011
ISBN: 978-1-4577-0250-1
Subjects:
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

This paper describes two methods to cancel the effect of two kinds of leakage signals which may be presented when an antenna is measured in a planar near-field range. One method tries to reduce leakage bias errors from the receiver¿s quadrature detector and it is based on estimating the bias constant added to every near-field data sample. Then, that constant is subtracted from the data, removing its undesired effect on the far-field pattern. The estimation is performed by back-propagating the field from the scan plane to the antenna under test plane (AUT) and averaging all the data located outside the AUT aperture. The second method is able to cancel the effect of the leakage from faulty transmission lines, connectors or rotary joints. The basis of this method is also a reconstruction process to determine the field distribution on the AUT plane. Once this distribution is known, a spatial filtering is applied to cancel the contribution due to those faulty elements. After that, a near-field-to-far-field transformation is applied, obtaining a new radiation pattern where the leakage effects have disappeared. To verify the effectiveness of both methods, several examples are presented.

More information

Item ID: 12083
DC Identifier: http://oa.upm.es/12083/
OAI Identifier: oai:oa.upm.es:12083
Official URL: http://www.eucap2011.org/
Deposited by: Memoria Investigacion
Deposited on: 13 Sep 2012 08:06
Last Modified: 21 Apr 2016 11:15
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