• DocumentCode
    983905
  • Title

    A Low-Noise Microwave Quadrupole Amplifier

  • Author

    Ashkin, A.

  • Author_Institution
    Bell Telephone Labs., Inc., Murray Hill, N.J.
  • Volume
    49
  • Issue
    6
  • fYear
    1961
  • fDate
    6/1/1961 12:00:00 AM
  • Firstpage
    1016
  • Lastpage
    1020
  • Abstract
    Experimental results on a low-noise microwave amplifier operating at 4137 Mc are described. At a gain of 19 db the measured double-channel noise figure is 0.79 db, corresponding to an effective temperature of 58°K ± 10°K. The effective beam temperature is 25°K ± 10°K. The noise bandwidth between points 3 db down from the optimum is 32 Mc. The tube operates at 10 volts and 27 ¿a and requires about 150 mw of pump power. The dynamic range of the amplifier is about 100 db.
  • Keywords
    Bridges; Cathodes; Cyclotrons; Electron beams; Laser excitation; Low-noise amplifiers; Microwave amplifiers; Microwave frequencies; Noise figure; Temperature;
  • fLanguage
    English
  • Journal_Title
    Proceedings of the IRE
  • Publisher
    ieee
  • ISSN
    0096-8390
  • Type

    jour

  • DOI
    10.1109/JRPROC.1961.287882
  • Filename
    4066445
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=983905