Title :
Characterization of SKA-AAlow antenna elements in the array environment
Author :
Raucy, C. ; de Lera Acedo, E. ; Razavi-Ghods, N. ; Craeye, C.
Author_Institution :
ICTEAM, Univ. Catholique de Louvain, Louvain-la-Neuve, Belgium
Abstract :
The electromagnetic modeling and testing is presented for antenna elements devoted to the low frequency band of the Square Kilometre Array (SKA) telescope [1]. Covering a band from 70 to 450 MHz, these elements consist on a log-periodic dipole array (LPDA) model and they have been designed for maximum sensitivity across the band in the region +/- 45 degrees from zenith. A 16-element array (AAVS0 - Aperture Array Verification System 0) has been built in Lords Bridge, Cambridge, UK, and it is being tested to validate the electromagnetic properties of the antenna elements and front-end. We focus on the modeling of these elements and compare simulated and measured data for simulation software validation.
Keywords :
UHF antennas; VHF antennas; dipole antenna arrays; log periodic antennas; radiotelescopes; 16-element array; AAVS0; Aperture Array Verification System 0; Cambridge; LPDA model; Lords Bridge; SKA telescope; SKA-AAlow antenna element characterization; UK; array environment; electromagnetic modeling; electromagnetic properties; electromagnetic testing; frequency 70 MHz to 450 MHz; log-periodic dipole array model; simulation software validation; square kilometre array telescope; Antenna arrays; Antenna measurements; Arrays; Impedance; Moment methods;
Conference_Titel :
Electromagnetics in Advanced Applications (ICEAA), 2012 International Conference on
Conference_Location :
Cape Town
Print_ISBN :
978-1-4673-0333-0
DOI :
10.1109/ICEAA.2012.6328681
