An effective near-field - far-field transformation technique with spherical spiral scanning tailored for quasi-planar antennas is here proposed. Such a technique is based on the nonredundant sampling representations of the electromagnetic fields and makes use of a flexible source modelling, formed by two circular "bowls" with the same aperture diameter, but different lateral bends. Such a modelling allows one to fit very well a lot of this kind of antennas by properly setting its geometric parameters. It is so possible to remarkably lower the number of data to be acquired, thus reducing in a significant way the required measurement time. Some numerical tests, assessing the accuracy of the technique and its stability with respect to random errors affecting the data, are reported.

Efficient far-field reconstruction of quasi-planar antennas from spherical spiral near-field data

D'AGOSTINO, Francesco;FERRARA, Flaminio;GENNARELLI, Claudio;GUERRIERO, ROCCO;MIGLIOZZI, MASSIMO;
2009-01-01

Abstract

An effective near-field - far-field transformation technique with spherical spiral scanning tailored for quasi-planar antennas is here proposed. Such a technique is based on the nonredundant sampling representations of the electromagnetic fields and makes use of a flexible source modelling, formed by two circular "bowls" with the same aperture diameter, but different lateral bends. Such a modelling allows one to fit very well a lot of this kind of antennas by properly setting its geometric parameters. It is so possible to remarkably lower the number of data to be acquired, thus reducing in a significant way the required measurement time. Some numerical tests, assessing the accuracy of the technique and its stability with respect to random errors affecting the data, are reported.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/2291509
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