• DocumentCode
    995863
  • Title

    Evaluation of the haystack antenna and radome

  • Author

    Meeks, M.I. ; Ruze, Johit

  • Author_Institution
    Massachusetts Institute of Technology, Westford, MA, USA
  • Volume
    19
  • Issue
    6
  • fYear
    1971
  • fDate
    11/1/1971 12:00:00 AM
  • Firstpage
    723
  • Lastpage
    728
  • Abstract
    The characteristics of the radome-enclosed Haystack antenna have been evaluated as a radio-astronomical instrument. Important advantages of the radome enclosure are the high pointing precision it permits under all wind conditions, the rms pointing errors being 7" in azimuth and elevation, and the antenna surface tolerance (0.027 in rms) made possible by controlled environment. We searched for but failed to find any detectable radome effects as follows: pointing deviations, gain variations, noise granularity, and polarization effects. The principal electromagnetic effect of the radome is a reduction of aperture efficiency by an amount that varies from about 1 dB at long wavelengths to 2.8 dB at 35 GHz. The noise contribution is about 9\\deg K at 8 GHz and 21\\deg K at 22.2 GHz.
  • Keywords
    Radio telescopes; Radomes; Reflector antennas, multireflector; Antenna measurements; Apertures; Biomembranes; Dielectric losses; Extraterrestrial measurements; Instruments; Observatories; Radar antennas; Radio astronomy; Temperature;
  • fLanguage
    English
  • Journal_Title
    Antennas and Propagation, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-926X
  • Type

    jour

  • DOI
    10.1109/TAP.1971.1140030
  • Filename
    1140030
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=995863