• DocumentCode
    875037
  • Title

    A Method for the Accurate Measurement of the Noise Temperature Ratio of Microwave Mixer Crystals

  • Author

    Dearle, R.C. ; Davis, R.E.

  • Volume
    3
  • Issue
    6
  • fYear
    1955
  • fDate
    12/1/1955 12:00:00 AM
  • Firstpage
    27
  • Lastpage
    35
  • Abstract
    For the precise measurement of noise temperature ratio of a microwave mixer crystal it is common practice to employ a Roberts coupling network in order to make the Y factor independent of crystal conductance. It is shown here that a number of errors are introduced in this method, the chief of which is failure to consider the effect of transit time loading. It is also shown that the use of cathode lead inductance leads to a much improved measurement of noise temperature ratio.
  • Keywords
    Cathodes; Crystals; Equations; Laboratories; Microwave measurements; Microwave theory and techniques; Noise generators; Noise measurement; Signal to noise ratio; Temperature measurement;
  • fLanguage
    English
  • Journal_Title
    Microwave Theory and Techniques, IRE Transactions on
  • Publisher
    ieee
  • ISSN
    0097-2002
  • Type

    jour

  • DOI
    10.1109/TMTT.1955.1124988
  • Filename
    1124988
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=875037