• DocumentCode
    977275
  • Title

    A Maser Amplifier for Radio Astronomy at X-Band

  • Author

    Giordmaine, J.A. ; Alsop, L.E. ; Mayer, C.H. ; Townes, C.H.

  • Author_Institution
    Dept of Phys., Columbia University
  • Volume
    47
  • Issue
    6
  • fYear
    1959
  • fDate
    6/1/1959 12:00:00 AM
  • Firstpage
    1062
  • Lastpage
    1069
  • Abstract
    The design and operating characteristics of a maser radiometer for use in radio astronomy at 3-cm wavelength are discussed. The operating system which is described has a bandwidth of 5.5 mc and an input noise temperature, including background radiation into the antenna, of about 85°K. An rms fluctuation level of about 0.04°K is attained using an averaging time of 5 seconds. A discussion of the factors determining the sensitivity of such devices is presented.
  • Keywords
    Bandwidth; Laboratories; Low-frequency noise; Masers; Noise figure; Noise measurement; Preamplifiers; Radio astronomy; Temperature; Voltage;
  • fLanguage
    English
  • Journal_Title
    Proceedings of the IRE
  • Publisher
    ieee
  • ISSN
    0096-8390
  • Type

    jour

  • DOI
    10.1109/JRPROC.1959.287134
  • Filename
    4065784
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=977275