The non-redundant sampling representations of electromagnetic fields and the image principle are properly applied in this work to develop an effective probe-compensated spherical near-field to far-field (NFTFF) transformation, which makes use only of the NF data measured over the upper hemisphere, due to the presence of an infinite perfectly conducting ground plane. According to these representations, the considered antenna under test (AUT) and its image are assumed as enclosed in a surface consisting of a cylinder ended in two half-spheres. Then, an efficient 2-D optimal sampling interpolation scheme is used to reconstruct the NF data required by the standard spherical NFTFF transformation from the NF samples collected over the upper hemisphere and from those properly synthesized from these last over the lower one. Numerical examples are shown to assess the effectiveness of the developed non-redundant spherical NFTFF transformation.

Aut Far-Field Pattem Reconstruction from A Reduced Set of Spherical Near-Field Data Collected in Presence of An Infinite Perfectly Conducting Ground Plane

D'Agostino F.;Ferrara F.;Gennarelli C.;Guerriero R.;Migliozzi M.
2020

Abstract

The non-redundant sampling representations of electromagnetic fields and the image principle are properly applied in this work to develop an effective probe-compensated spherical near-field to far-field (NFTFF) transformation, which makes use only of the NF data measured over the upper hemisphere, due to the presence of an infinite perfectly conducting ground plane. According to these representations, the considered antenna under test (AUT) and its image are assumed as enclosed in a surface consisting of a cylinder ended in two half-spheres. Then, an efficient 2-D optimal sampling interpolation scheme is used to reconstruct the NF data required by the standard spherical NFTFF transformation from the NF samples collected over the upper hemisphere and from those properly synthesized from these last over the lower one. Numerical examples are shown to assess the effectiveness of the developed non-redundant spherical NFTFF transformation.
978-88-31299-00-8
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/4750206
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
social impact