EM modelling of lightning effects on SKA-low array antennas

Cole, Matthew T.; Acedo, Eloy de Lera; Reader, H.C.

doi:10.1109/iceaa.2013.6632402

Cited by 1 publication

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References 3 publications

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“…The simulations presented in this section, unless otherwise stated have been carried out using the commercial software CST. Furthermore, simulations of lightning effects are also being carried out in order to design appropriate protection systems [16]. 1) Impedance.…”

Section: B Simulationsmentioning

confidence: 99%

SKALA, a log-periodic array antenna for the SKA-low instrument: design, simulations, tests and system considerations

et al. 2015

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The very demanding requirements of the SKA-low instrument call for a challenging antenna design capable of delivering excellence performance in radiation patterns, impedance matching, polarization purity, cost, longevity, etc. This paper is devoted to the development (design and test of first prototypes) of an active ultra-wideband antenna element for the low-frequency instrument of the SKA radio telescope. The antenna element and differential low noise amplifier described here were originally designed to cover the former SKA-low band (70-450MHz) but it is now aimed to cover the re-defined SKA-low band (50-350MHz) and furthermore the antenna is capable of performing up to 650MHz with the current design. The design is focused on maximum sensitivity in a wide field of view (+/-45° from zenith) and low cross-polarization ratios. Furthermore, the size and cost of the element has to be kept to a minimum as millions of these antennas will need to be deployed for the full SKA in very compact configurations. The primary focus of this paper is therefore to discuss various design implications for the SKA-low telescope.

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Section: B Simulationsmentioning

confidence: 99%