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A Wide-band Feed Sy...
A Wide-band Feed System for SKA Band 1 Covering Frequencies From 350 - 1050 MHz
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- Billade, Bhushan, 1982 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Flygare, Jonas, 1988 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Dahlgren, Magnus, 1969 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Wästberg, Bo, 1954 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Pantaleev, Miroslav, 1970 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- ISBN 9788890701863
- 2016
- 2016
- Engelska.
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Ingår i: 10th European Conference on Antennas and Propagation, EuCAP 2016; Davos; Switzerland; 10 April 2016 through 15 April 2016. - 2164-3342. - 9788890701863 ; , s. Art. no. 7481794-
- Relaterad länk:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- We present the design of a wideband feed system for the Band 1 of the Square Kilometer Array (project). The Band 1 feed system uses a quad-ridged flared horn (QRFH) optimizedfor a offset Gregorian dual reflector dish to cover RF frequencies from 350 - 1050 MHz, and a cryogenic low noise amplifier (LNA). The feed horn is optimized to achieve best Aeff/Tsys over the entire band, by making trade-off between aperture efficiency and spill over noise contribution. The optimised feed horn shows above 70% efficiency over the entire 3:1 band, with return loss better than 10 dB. The cryostat following the feed has between 9 to 14 K noise, measured at the co-axial connector of the QRFH. The estimated on-sky sensitivity of the feed system is better than specified 4.2 m2/K averaged over the entire frequency band.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- cryogenic feed system.
- Wideband feed
- QRFH
- SKA
Publikations- och innehållstyp
- kon (ämneskategori)
- ref (ämneskategori)
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