Open AccessOptimal sampling interpolation over a plane from transient bi‐polar near‐field data
Author(s) -
D'Agostino Francesco,
Ferrara Flaminio,
Gennarelli Claudio,
Guerriero Rocco,
Migliozzi Massimo
Publication year - 2016
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2015.0825
Subject(s) - interpolation (computer graphics) , sampling (signal processing) , aperture (computer memory) , ellipsoid , planar , geometry , plane (geometry) , transient (computer programming) , nonuniform sampling , near and far field , electromagnetic field , polar , mathematics , physics , optics , mathematical analysis , algorithm , computer science , acoustics , telecommunications , computer graphics (images) , frame (networking) , astronomy , detector , quantization (signal processing) , operating system , quantum mechanics
The non‐redundant sampling representations of electromagnetic fields are properly applied in this study to develop an optimal sampling interpolation formula over a plane in the time domain (TD) from a minimum number of bi‐polar near‐field data. To this end, the ultra wide band antennas typically employed for communication applications and modern radars and characterised by a quasi‐planar geometry are modelled as enclosed either in an oblate ellipsoid or in a flexible surface formed by two circular bowls with the same aperture diameter, but with eventually different lateral bends. In both the cases, numerical examples, assessing the effectiveness of the TD interpolation schemes, are shown.