• DocumentCode
    1439272
  • Title

    Evolution of frequency modulation

  • Author

    Armstrong, Edwin H.

  • Author_Institution
    Columbia University, New York, N. Y.
  • Volume
    59
  • Issue
    12
  • fYear
    1940
  • Firstpage
    485
  • Lastpage
    493
  • Abstract
    SOME 60 years ago the electric-power industry began the development of a system of distribution which all are now agreed was not the right system. I am referring of course to the low-voltage d-c system. The inevitableness of its replacement by the high-voltage a-c system is now obvious to everyone, although the literature of the transition stage reflects a period of violently conflicting opinion.
  • Keywords
    Antennas; Frequency modulation; Industries; Microphones; Radio transmitters; Receivers;
  • fLanguage
    English
  • Journal_Title
    Electrical Engineering
  • Publisher
    ieee
  • ISSN
    0095-9197
  • Type

    jour

  • DOI
    10.1109/EE.1940.6435194
  • Filename
    6435194
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1439272