The Open Electrical & Electronic Engineering Journal
2017, 11 : 141-153Published online 2017 July 31. DOI: 10.2174/1874129001711010141
Publisher ID: TOEEJ-11-141
RESEARCH ARTICLE
Correction of Known Position Errors in a Spherical Near to Far-Field Transformation for Long Antennas
* 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
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.