This work provides the experimental validation of a near field — far field (NF-FF) transformation technique with spherical scanning for electrically long antennas, which requires a nonredundant number of NF data. Such a technique is based on the nonredundant sampling representations of the electromagnetic fields and uses a prolate ellipsoid to shape an elongated antenna. A two-dimensional optimal sampling interpolation formula is employed to accurately recover the NF data required by the classical spherical NF-FF transformation from the acquired nonredundant NF data. It is so possible to obtain a remarkable reduction of the measurement time. Some experimental results, carried out at the UNISA Antenna Characterization Lab and assessing the effectiveness of the proposed technique, are shown.

Experimental verification of a nonredundant NF-FF transformation with spherical scanning for elongated antennas

D'AGOSTINO, Francesco;FERRARA, Flaminio;GENNARELLI, Claudio;GUERRIERO, ROCCO;MIGLIOZZI, MASSIMO
2013

Abstract

This work provides the experimental validation of a near field — far field (NF-FF) transformation technique with spherical scanning for electrically long antennas, which requires a nonredundant number of NF data. Such a technique is based on the nonredundant sampling representations of the electromagnetic fields and uses a prolate ellipsoid to shape an elongated antenna. A two-dimensional optimal sampling interpolation formula is employed to accurately recover the NF data required by the classical spherical NF-FF transformation from the acquired nonredundant NF data. It is so possible to obtain a remarkable reduction of the measurement time. Some experimental results, carried out at the UNISA Antenna Characterization Lab and assessing the effectiveness of the proposed technique, are shown.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4092053
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