Correction of Known Position Errors in a Spherical Near to Far-Field Transformation for Long Antennas
Renato Cicchetti1, Francesco D’Agostino2, Flaminio Ferrara2, Claudio Gennarelli2, *, Rocco Guerriero2, Massimo Migliozzi2
1 Department of Information Engineering, Electronics and Telecommunications, University of Rome “La Sapienza”, Rome, Italy
2 Department of Industrial Engineering, University of Salerno, Fisciano SA, Italy
Abstract
Background:
This paper provides the experimental validation of an efficient iterative procedure to correct known position errors in a spherical near to far-field (NTFF) transformation for elongated antennas which uses a minimum number of NF measurements.
Method:
This transformation exploits a non-redundant sampling representation of the voltage detected by the probe obtained by shaping a long antenna with a prolate ellipsoid. The uniform samples, those at the points set by the representation, are accurately reconstructed from the acquired not regularly distributed (non-uniform) ones by using an iterative scheme, which requires a one to one relationship between each uniform sampling point and the corresponding non-uniform one. Then a 2-D optimal sampling formula is adopted to evaluate the input data needed to perform the traditional spherical NTFF transformation from the retrieved non-redundant uniform samples.
Conclusion:
Finally, laboratory proofs have been reported to demonstrate the validity of the presented technique from a practical viewpoint.
Keywords: Near to far-field transformations, Non-redundant representations of electromagnetic fields, Probe positioning errors correction, Spherical scan, 2D Optimal sampling, Elongated antennas.
Article Information
Article History:
Received Date: 07/02/2017
Revision Received Date: 07/04/2017
Acceptance Date: 15/05/2017
Electronic publication date: 31/07/2017
Collection year: 2017
© 2017 Cicchetti et al.
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at:
https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
* Address correspondence to this author at the Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132 - 84084 Fisciano (SA), Italy; Tel: +39 089-964297; Fax: +39 089-968730; E-mail: cgennarelli@unisa.it
Open Peer Review Details |
Manuscript submitted on 07-02-2017 |
Original Manuscript |
Correction of Known Position Errors in a Spherical Near to Far-Field Transformation for Long Antennas |