An active dual-polarized Log-Periodic antenna has been designed to meet the requirements of the low-frequency (50 - 350 MHz) radio telescope of the Square Kilometre Array (SKA). The integration of antenna and low noise amplifier has been conceived in order to achieve a high degree of testability. This aspect has been found to be crucial to obtain a smooth frequency response compatible with the SKA science cases. The design has also been driven by other factors such as the large-volume production (more than 130 000 antennas will be built) and the environmental conditions of the harsh Australian desert. A specific verification approach based on both wideband radiometric spectral and spatial measurements in relevant laboratory and in-situ conditions has been developed. Electromagnetic analyses and experimental results exhibit a very good agreement. In December 2019, this antenna was part of the reference solution for the System Critical Design Review of the SKA.
Test-Driven Design of an Active Dual-Polarized Log-Periodic Antenna for the Square Kilometre Array / Bolli, Pietro; Mezzadrelli, Lorenzo; Monari, Jader; Perini, Federico; Tibaldi, Alberto; Virone, Giuseppe; Bercigli, Mirko; Ciorba, Lorenzo; Paonessa, Fabio; Rusticelli, Simone; Schiaffino, Marco. - In: IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION. - ISSN 2637-6431. - ELETTRONICO. - 1(2020), pp. 253-263.
|Titolo:||Test-Driven Design of an Active Dual-Polarized Log-Periodic Antenna for the Square Kilometre Array|
|Data di pubblicazione:||2020|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1109/OJAP.2020.2999109|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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