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An Update on the Mechanical and EM Performance of the Composite Dish Verification Antenna (DVA-1) for the SKA
External Online Source: hdl:2014/42792
Author and Affiliation:
Lacy, G. E.(National Research Council of Canada, Vancouver, British Columbia, Canada);
Fleming, M.(Minex Engineering Corp., Antioch, CA);
Baker, L.(Cornell Univ., Ithaca, NY, United States);
Imbriale, W.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States);
Cortes-Medellin, G.(Cornell Univ., Ithaca, NY, United States);
Veidt, B.(National Research Council of Canada, Vancouver, British Columbia, Canada);
Hovey, G. J.(National Research Council of Canada, Vancouver, British Columbia, Canada);
DeBoer, D.(California Univ., Berkeley, CA, United States)
Abstract: This paper will give an overview of the unique mechanical and optical design of the DVA-1 telescope. The rim supported carbon fibre reflector surfaces are designed to be both low cost and have high performance under wind, gravity, and thermal loads. The shaped offset Gregorian optics offer low and stable side lobes along with a large area at the secondary focus for multiple feeds with no aperture blockage. Telescope performance under ideal conditions as well as performance under gravity, wind, and thermal loads will be compared directly using calculated radiation patterns for each of these operating conditions.
Publication Date: Sep 03, 2012
Document ID:
20140001962
(Acquired Mar 18, 2014)
Subject Category: OPTICS
Document Type: Conference Paper
Meeting Information: International Conference on Electromagnetics in Advanced Applications; 2-7 Sept. 2012; Cape Town; South Africa
Financial Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 4p; In English; Original contains color and black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: PARABOLIC REFLECTORS; ANTENNA RADIATION PATTERNS; TELESCOPES; OPTICAL EQUIPMENT; MECHANICAL ENGINEERING; DESIGN ANALYSIS; APERTURES; SIDELOBES; REFLECTORS
Other Descriptors: COMPOSITE DISH; RADIO TELESCOPE
Availability Source: Other Sources
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