On the Feasibility of a Generic Phased Array Feed for the European VLBI Network

Saba Aslam (Corresponderende auteur), Oskar Talcoth, Lars Manholm, Sam Agneessens, Ulf Johannsen, David Prinsloo

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

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Samenvatting

The feasibility of using a generic Phased Array Feed (PAF) for the radio telescopes within the European VLBI Network (EVN) is explored. Taking into consideration the variations in size (14 m−100 m) and primary focal distance to diameter ratios f/D(0.3−0.5) of the EVN reflectors, the achievable aperture efficiency of a generic array feed is investigated. For the scan range of 0∘−5∘, a parametric study based on encircled power is performed to find the optimum location, shape and size of the array. It is concluded that for a generic PAF design, the smallest f/D ratio decides the required array size for a certain aperture efficiency and scan angle. A spherical array with specific radius of curvature and displacement from the focus is found to achieve 80% aperture efficiency with smaller size, both in terms of radius projected onto the focal plane and surface area, than a planar array placed in the focal plane.
Originele taal-2Engels
Titel2024 International Conference on Electromagnetics in Advanced Applications, ICEAA 2024
UitgeverijInstitute of Electrical and Electronics Engineers
Pagina's233-237
Aantal pagina's5
ISBN van elektronische versie979-8-3503-6097-4
DOI's
StatusGepubliceerd - 8 okt. 2024
Evenement25th International Conference on Electromagnetics in Advanced Applications, ICEAA 2024 - Lisbon, Portugal
Duur: 2 sep. 20246 sep. 2024

Congres

Congres25th International Conference on Electromagnetics in Advanced Applications, ICEAA 2024
Verkorte titelICEAA 2024
Land/RegioPortugal
StadLisbon
Periode2/09/246/09/24

Financiering

Funded by the European Union, under ANTERRA 101072363 HORIZON-MSCA-2021-DN-01. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union. Neither the European Union nor the granting authority can be held responsible for them.

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