An effective near-field - far-field transformation technique with spherical spiral scanning tailored for quasi-planar antennas is here proposed. Such a technique is based on the nonredundant sampling representations of the electromagnetic fields and makes use of a flexible source modelling, formed by two circular "bowls" with the same aperture diameter, but different lateral bends. Such a modelling allows one to fit very well a lot of this kind of antennas by properly setting its geometric parameters. It is so possible to remarkably lower the number of data to be acquired, thus reducing in a significant way the required measurement time. Some numerical tests, assessing the accuracy of the technique and its stability with respect to random errors affecting the data, are reported.
Efficient far-field reconstruction of quasi-planar antennas from spherical spiral near-field data
D'AGOSTINO, Francesco;FERRARA, Flaminio;GENNARELLI, Claudio;GUERRIERO, ROCCO;MIGLIOZZI, MASSIMO;
2009-01-01
Abstract
An effective near-field - far-field transformation technique with spherical spiral scanning tailored for quasi-planar antennas is here proposed. Such a technique is based on the nonredundant sampling representations of the electromagnetic fields and makes use of a flexible source modelling, formed by two circular "bowls" with the same aperture diameter, but different lateral bends. Such a modelling allows one to fit very well a lot of this kind of antennas by properly setting its geometric parameters. It is so possible to remarkably lower the number of data to be acquired, thus reducing in a significant way the required measurement time. Some numerical tests, assessing the accuracy of the technique and its stability with respect to random errors affecting the data, are reported.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
