This paper concerns the experimental validation of the near-field – far-field transformation technique with helicoidalscanning. Such a technique, based on the theoretical results concerning the nonredundant sampling representationsof the electromagnetic fields, makes use of a two-dimensional optimal sampling interpolation formula to reconstruct thenear-field data needed to perform the classical near-field – far-field transformation with cylindrical scan. The comparisonof the far-field patterns reconstructed from the acquired helicoidal measurements with those obtained from the data directlymeasured on the classical cylindrical grid assesses the effectiveness of the near-field – far-field transformation usingthis innovative scanning technique. Its validity is further confirmed by the very good agreement with the direct farfieldmeasurements.
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