Laboratory Tests on the Near-Field - Far-Field Transformation with Spherical Spiral Scan Optimized for Long Antennas

Authors: Francesco D’Agostino, Flaminio Ferrara, Claudio Gennarelli, Rocco Guerriero, Massimo Migliozzi, Jeff A. Fordham

In this communication, the experimental verification of a probe compensated near-field – far-field (NF–FF) transformation with spherical spiral scanning particularly suitable for elongated antennas is provided. It is based on a nonredundant sampling representation of the voltage measured by the probe, obtained by using the unified theory of spiral scans for nonspherical antennas and adopting a cylinder ended in two half-spheres for modelling long antennas. Its main characteristic is to allow a remarkable reduction of the measurement time due to the use of continuous and synchronized movements of the positioning systems and to the reduced number of required NF measurements. In fact, the NF data needed by the classical NF–FF transformation with spherical scanning are efficiently and accurately reconstructed from those acquired along the spiral, by employing an optimal sampling interpolation formula. Some experimental results, obtained at the Antenna Characterization Lab of the University of Salerno and assessing the effectiveness of such a NF–FF transformation technique, are presented.

Atlanta

1125 Satellite Blvd., Suite 100
Suwanee, GA 30024-4629 USA

+1 678 475 8300
+1 678 542 2601
sales@nsi-mi.com

Los Angeles

19730 Magellan Drive
Torrance, CA 90502-1104 USA

+1 310 525 7000
+1 310 525 7100
sales@nsi-mi.com

CTIA/GSMA

Los Angeles, CA 09/12/2018 09:00 am 27 Days

Latest Tweets

This site is using cookies for analytical purposes and to provide a better user experience. Read our Privacy Policy for more information.
   OK