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Proceedings Paper

Design and analysis of a large cylinder antenna array in Tianlai
Author(s): Z. P. Chen; R.L. Wang; J. Peterson; X. L. Chen; J.Y. Zhang; H.L. Shi
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Paper Abstract

In order to make a large area survey, detect a large scale structure and understand dark energy, a large radio interference array with a large number of feeds is required. However, cost and deformation control are main considerations in designing a large antenna array. In this paper we designed a cylinder parabolic structure for antenna array 45m x 40m of "Tianlai" project in Xinjiang, China in 2015. In order to largely reduce weight and cost, the antenna was divided into many assemble units, their structure was optimized by MSC.Patran/Nastran and their reflector deformation under various load cases of gravity, snow and wind was analyzed. For the feed support, we compared different types of structure such as arch-bridge, tower, cable and pole, and by mechanical simulations we found that the arch-bridge structure is very helpful to achieve large span, decrease weight and improve stability, for example, the total weight of optimized structure can be reduced to 43.7% of before. Finally some deformation measurement and experiment methods were discussed, which can be extended to array 100m×100m in the future.

Paper Details

Date Published: 27 July 2016
PDF: 6 pages
Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 99065W (27 July 2016); doi: 10.1117/12.2232570
Show Author Affiliations
Z. P. Chen, Hangzhou Dianzi Univ. (China)
R.L. Wang, Hangzhou Dianzi Univ. (China)
J. Peterson, Carnegie Mellon Univ. (United States)
X. L. Chen, National Astronomical Observatories (China)
J.Y. Zhang, Hangzhou Dianzi Univ. (China)
H.L. Shi, National Astronomical Observatories (China)

Published in SPIE Proceedings Vol. 9906:
Ground-based and Airborne Telescopes VI
Helen J. Hall; Roberto Gilmozzi; Heather K. Marshall, Editor(s)

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