Evaluation of the Far Field Radiated by a Flat AUT from Non-Redundant Near-Field Bi-Polar Samples

被引:0
作者
D'Agostino, Francesco [1 ]
Ferrara, Flaminio [1 ]
Gennarelli, Claudio [1 ]
Guerriero, Rocco [1 ]
Migliozzi, Massimo [1 ]
机构
[1] Univ Salerno, DIIn, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy
来源
PROCEEDINGS OF THE 2022 21ST MEDITERRANEAN MICROWAVE SYMPOSIUM (MMS 2022) | 2022年
关键词
antenna measurements; near-field/far-field transformation; bi-polar scanning; non-redundant representations of electromagnetic fields; flat antenna under test; TRANSFORMATION; RECONSTRUCTION; INTERPOLATION; PATTERN; NUMBER;
D O I
10.1109/MMS55062.2022.9825564
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A probe-compensated near-field to far-field (NF/FF) transformation with bi-polar scanning particularly suitable for dealing with a flat antenna under test (AUT) is proposed in this work. It properly exploits the non-redundant sampling representations of the electromagnetic fields to develop an efficient sampling representation of the voltage acquired by the measuring probe over the scanning plane, which uses a minimum number of NF bi-polar samples. A two-dimensional optimal sampling interpolation formula is then applied to precisely reconstruct the NF data needed by the classical NF/FF transformation with plane-rectangular scan from the knowledge of these samples. To properly account for the flatness of the AUT, a disk with diameter equal to the AUT maximum dimension is assumed as modeling surface. Such a modeling is much more effective from the NF data reduction viewpoint than the other modelings for quasi-planar AUTs (an oblate spheroid or a double bowl), since, shaping very well the AUT geometry, it allows one to reduce as much as possible the related volumetric redundancy. Numerical results are shown to assess the accuracy of the proposed NF/FF transformation.
引用
收藏
页码:108 / 112
页数:5
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