• DocumentCode
    933338
  • Title

    A Broad-Band Traveling-Wave Maser for the Range 40-46.5 GHz

  • Author

    Cherpak, Nickolay T. ; Smirnova, Tamara A.

  • Volume
    31
  • Issue
    3
  • fYear
    1983
  • Firstpage
    306
  • Lastpage
    309
  • Abstract
    A tunable traveling-wave maser (TWM) for the frequency range 40-46.5 GHz has been developed, which is characterized by an extended instantaneous bandwidth. Andahssite (Al 2SiO 5 ) doped with Fe 3 atoms is used as the active crystal. The slow-wave structure is a digit comb with broad-band matching particularly suitable for the millimeter range. The new type of isolator employed is based on textured hexagonal ferrite materials, namely BaNi 2Sc xFe, 16- xO 27. The net gain within the tuning band is 20-35 dB. The instantaneous bandwidth at a --3-dB level is 150-100 MHz, dependhsg on the net gain. The noise temperature at the input does not exceed 25° K.
  • Keywords
    Active noise reduction; Bandwidth; Crystalline materials; Ferrites; Frequency; Isolators; Magnetic fields; Masers; Tuning; Waveguide transitions;
  • fLanguage
    English
  • Journal_Title
    Microwave Theory and Techniques, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9480
  • Type

    jour

  • DOI
    10.1109/TMTT.1983.1131482
  • Filename
    1131482
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=933338