• DocumentCode
    1218546
  • Title

    A New System of Frequency Modulation

  • Author

    Adler, Robert

  • Author_Institution
    Zenith Radio Corporation, Chicago, Illinois
  • Volume
    35
  • Issue
    1
  • fYear
    1947
  • Firstpage
    25
  • Lastpage
    31
  • Abstract
    The development of a new phase-modulator tube is described. In a concentric structure of conventional dimensions, a radial electron stream is shaped into a wave-like pattern which progresses continuously around the cathode. Phase shift, 12 to 16 times larger than in conventional modulators, is produced by electro-magnetic deflection. The failings of early models are analyzed and the steps are reviewed which resulted in the development of a satisfactory tube structure.
  • Keywords
    Anodes; Bars; Cathodes; Electron beams; Frequency conversion; Frequency modulation; Laboratories; Oscillators; Phase modulation; Radio transmitters;
  • fLanguage
    English
  • Journal_Title
    Proceedings of the IRE
  • Publisher
    ieee
  • ISSN
    0096-8390
  • Type

    jour

  • DOI
    10.1109/JRPROC.1947.226196
  • Filename
    1697165
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1218546