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- W3102974539 abstract "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 (+/- 45deg 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." @default.
- W3102974539 created "2020-11-23" @default.
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- W3102974539 date "2015-07-05" @default.
- W3102974539 modified "2023-10-06" @default.
- W3102974539 title "SKALA, a log-periodic array antenna for the SKA-low instrument: design, simulations, tests and system considerations" @default.
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- W3102974539 doi "https://doi.org/10.1007/s10686-015-9439-0" @default.
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