2009 Technical Papers

A Nonredundant NF-FF Transformation with Spherical Spiral Scanning Using a Flexible AUT Model

Authors: F. D’Agostino, F. Ferrara, J.A. Fordham, C. Gennarelli, R. Guerriero, C. Rizzo
Publication: AMTA 2009
Copyright Owner: University of Salerno

In this work, a probe compensated near-field – farfield transformation technique with spherical spiral scanning suitable to deal with elongated antennas is developed by properly applying the unified theory of spiral scans for nonspherical antennas. A very flexible source modelling, formed by a cylinder ended in two half-spheres, is considered as surface enclosing the antenna under test. It is so possible to obtain a remarkable reduction of the number of data to be acquired, thus significantly reducing 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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