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- W2989649292 abstract "The Baryon acoustic oscillations from Integrated Neutral Gas Observations (BINGO) telescope is a 40-m class radio telescope under construction that has been designed to measure the large-angular-scale intensity of Hi emission at 980–1260 MHz and hence to constrain dark energy parameters. A large focal plane array comprising of 1.7-metre diameter, 4.3-metre length corrugated feed horns is required in order to optimally illuminate the telescope. Additionally, very clean beams with low sidelobes across a broad frequency range are required, in order to facilitate the separation of the faint Hi emission from bright Galactic foreground emission. Using novel construction methods, a full-sized prototype horn has been assembled. It has an average insertion loss of around − 0.15 dB across the band, with a return loss around 25 dB. The main beam is Gaussian with the first sidelobe at around − 25 dB. A septum polariser to separate the signal into the two hands of circular polarization has also been designed, built and tested." @default.
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- W2989649292 date "2020-07-24" @default.
- W2989649292 modified "2023-10-14" @default.
- W2989649292 title "Baryon acoustic oscillations from Integrated Neutral Gas Observations: Broadband corrugated horn construction and testing" @default.
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- W2989649292 doi "https://doi.org/10.1007/s10686-020-09666-9" @default.
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