An efficient approach for the evaluation of the antenna directivity from a nonredundant number of near-field measurements on a cylindrical helix is here presented. It employs a formula in closed form for computing the total radiated power from the knowledge of the radiation intensity samples on the far-field sphere. These last samples are determined via a probe compensated near-field - far-field transformation. An optimal sampling interpolation formula is properly used for their computation. The effectiveness of the proposed procedure is assessed by numerical simulations.
Evaluation of antenna directivity from near-field data acquired through a helicoidal scan
D'AGOSTINO, Francesco;FERRARA, Flaminio;GENNARELLI, Claudio;GUERRIERO, ROCCO;RICCIO, Giovanni;
2005-01-01
Abstract
An efficient approach for the evaluation of the antenna directivity from a nonredundant number of near-field measurements on a cylindrical helix is here presented. It employs a formula in closed form for computing the total radiated power from the knowledge of the radiation intensity samples on the far-field sphere. These last samples are determined via a probe compensated near-field - far-field transformation. An optimal sampling interpolation formula is properly used for their computation. The effectiveness of the proposed procedure is assessed by numerical simulations.File in questo prodotto:
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