Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/30051
Titolo: | Electromagnetic Gap Leakage Analysis for the SKA Mid-Frequency Dish | Autori: | Venter, Mariet BOLLI, Pietro |
Data pubblicazione: | 2019 | Titolo del volume in cui è pubblicato il poster: | 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting | Serie: | DIGEST - IEEE ANTENNAS AND PROPAGATION SOCIETY. INTERNATIONAL SYMPOSIUM | Da pagina:: | 473 | Abstract: | This paper presents electromagnetic analysis as performed on the Square Kilometre Array (SKA) mid-frequency dish in order to estimate the ground leakage caused by gaps in the main reflector. The effects of the ground leakage are shown in terms of conventional performance parameters such as gain and aperture efficiency, as well as the percentage of feed power hitting the ground behind the main reflector. Analysis were performed for SKA Band 1 and 2 with a combined frequency range of 0.4 - 1.8 GHz. It is shown that the gaps in the main reflector reduce the gain between 0.23 and 0.05 dB and could increase the noise temperature by approximately 14 K when pointed at zenith. The transmission percentage of the incident power hitting the ground is below 0.2% across the combined bands. | Titolo del convegno: | 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting | Luogo del convegno: | Atlanta, GA, USA | Periodo del convegno: | 7-12 July, 2019 | URI: | http://hdl.handle.net/20.500.12386/30051 | URL: | https://ieeexplore.ieee.org/abstract/document/8888525 | ISSN: | 1522-3965 | ISBN: | 978-1-7281-0692-2 978-1-7281-0693-9 |
DOI: | 10.1109/APUSNCURSINRSM.2019.8888525 | Fulltext: | open |
È visualizzato nelle collezioni: | 3.01 Contributi in Atti di convegno |
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Venter_Bolli_SKA_dish_gap_analysis_18Jan19_submit.pdf | postprint | 219.9 kB | Adobe PDF | Visualizza/apri |
08888525.pdf | [Administrators only] | 235.03 kB | Adobe PDF |
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