• DocumentCode
    1043602
  • Title

    Experimental test of a stepped zone mirror for microwaves

  • Author

    Di Francia, G. ; Ronchi, L. ; Russo, V.

  • Author_Institution
    Centro Microonde, Florence, Italy
  • Volume
    7
  • Issue
    5
  • fYear
    1959
  • fDate
    12/1/1959 12:00:00 AM
  • Firstpage
    125
  • Lastpage
    131
  • Abstract
    This paper is concerned with the construction and the experimental test of a stepped zone mirror, whose theory has been previously developed. According to the theory, this mirror is free from spherical aberration for any value of the angular aperture and at the same time is corrected for coma. The only monochromatic aberration which cannot be eliminated is astigmatism. A model of the mirror has been built to operate with \\lambda =3.2 cm. The focal length is 86.4 cm and the angular aperture 120\\deg . The test has given results in perfect agreement with the theory within a total field of about 40\\deg . Special astigmatic receivers have been designed and built to eliminate the effect of the astigmatism. It is believed that the mirror may be used as a fixed antenna for radio astronomy.
  • Keywords
    Reflector antennas; Apertures; Helium; Microwave devices; Microwave theory and techniques; Mirrors; Optical diffraction; Optical receivers; Radio astronomy; Testing; Vision defects;
  • fLanguage
    English
  • Journal_Title
    Antennas and Propagation, IRE Transactions on
  • Publisher
    ieee
  • ISSN
    0096-1973
  • Type

    jour

  • DOI
    10.1109/TAP.1959.1144744
  • Filename
    1144744
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1043602