This work evaluates the performance of a phaseless near-field to far-field transformation when applied to a demanding antenna, i.e. antenna whose characteristics are typically problematic for phaseless characterization, as test case. It is based on a smart scanning strategy, an effective representation of the unknowns of the problem, and a proper optimization method. The characterized source is a non-canonical planar source, formed by two disconnected sub-apertures, radiating a difference far-field pattern. The characterization has been accomplished by collecting the squared amplitude of the near-field samples on a planar wide-mesh scanning grid, based on a disk modeling of the source, which is convenient for planar flat sources, thus reducing the number of sampling points and simplifying the mathematical formulation. A numerical validation has been carried out to assess the effectiveness of the proposed approach

Phaseless Characterization of Flat Sources with a Planar Wide-Mesh Scanning Strategy

Bevilacqua F.;D'Agostino F.;Ferrara F.;Gennarelli C.;Guerriero R.;Migliozzi M.;
2024-01-01

Abstract

This work evaluates the performance of a phaseless near-field to far-field transformation when applied to a demanding antenna, i.e. antenna whose characteristics are typically problematic for phaseless characterization, as test case. It is based on a smart scanning strategy, an effective representation of the unknowns of the problem, and a proper optimization method. The characterized source is a non-canonical planar source, formed by two disconnected sub-apertures, radiating a difference far-field pattern. The characterization has been accomplished by collecting the squared amplitude of the near-field samples on a planar wide-mesh scanning grid, based on a disk modeling of the source, which is convenient for planar flat sources, thus reducing the number of sampling points and simplifying the mathematical formulation. A numerical validation has been carried out to assess the effectiveness of the proposed approach
2024
978-88-31299-09-1
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4868776
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