NDLI: The oblate spheroid as near-field scanning surface for far-field reconstruction

Content Provider	IEEE Xplore Digital Library
Author	Ferrara, F. Gennarelli, C. Riccio, G. Savarese, C.
Copyright Year	2006
Description	Author affiliation: D.I.I.I.E., Salerno Univ., Fisciano (Ferrara, F.; Gennarelli, C.; Riccio, G.)
Abstract	A nonredundant sampling representation of the field is here proposed for mapping it on a spheroidal surface that is oblate in shape and, in particular, for reconstructing it at the points fixed by an innovative near-field to far-field transformation process. The antenna under test is modelled by means of an oblate spheroid having the same rotational axis of the sampling surface, but different focal points and dimensions. In order to obtain a nonredundant sampling representation, the optimal phase function to be extracted from the field expression is evaluated, and the optimal parameters, for describing meridian ellipses and azimuthal circumferences, are determined. A fast, accurate and stable interpolation algorithm of central type is then proposed. It minimizes the truncation error for a given number of (nearest) retained samples and is stable with respect to errors affecting the data. Numerical simulations assess the effectiveness of the reconstruction process.
Starting Page	1
Ending Page	5
File Size	190005
Page Count	5
File Format	PDF
ISBN	9789290929376
DOI	10.1109/EUCAP.2006.4584679
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-11-06
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	ESA
Subject Keyword	Antenna measurements Surface reconstruction Satellite antennas Interpolation Electromagnetic measurements Shape Sampling methods Noise measurement Ellipsoids Antenna radiation patterns
Content Type	Text
Resource Type	Article

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