Title :
Diagnostic and investigation of sub-array radiation of large array antenna by inverse source technique
Author :
Foged, Lars ; Saccardi, Francesco ; Scialacqua, L. ; Salghetti Drioli, Luca ; Araque Quijano, J.L. ; Vecchi, Giuseppe
Author_Institution :
MV-Italy, Pomezia, Italy
Abstract :
This paper describes the application of the inversesource also named source-reconstruction technique [1-4] applied to the practical case of a space antenna intended for the European Navigation System GALILEO. The antenna (a pre-development flying on the GALILEO In Orbit Validation Element-B (GIOVE-B) satellite) consists in an array of 42 patch elements, divided into six sectors and fed by a two levels beam forming network (BFN) as described in [5]-[6]. The BFN provides complex excitation coefficients of each array element to obtain the desired iso-flux shaped beam pattern. The measurements have been performed in the new hybrid (Near Field and Compact Range) facility in the ESTEC CPTR as part of the installation and validation procedure [7]. The inverse-source technique has been applied to identify and filter out possible spurious signals presents in the hybrid facility and to isolate the sub-array radiations in order to highlight possible errors.
Keywords :
antenna arrays; antenna radiation patterns; array signal processing; satellite navigation; ESTEC CPTR; GALILEO In orbit validation element-B; GIOVE-B satellite; beam forming network; complex excitation coefficients; inverse source technique; iso-flux shaped beam pattern; large array antenna; source-reconstruction technique; space antenna; sub-array radiation; Antenna arrays; Antenna measurements; Antenna radiation patterns; Arrays; Current measurement; Extraterrestrial measurements; Magnetic field measurement;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6904483