• DocumentCode
    1558416
  • Title

    Thermal noise in a finite bandwidth

  • Author

    Vargas, Manuel ; Pallàs-Areny, Marek

  • Author_Institution
    Tech. Univ. of Catalonia, Barcelona, Spain
  • Volume
    4
  • Issue
    4
  • fYear
    2001
  • fDate
    12/1/2001 12:00:00 AM
  • Firstpage
    23
  • Lastpage
    25
  • Abstract
    In a practical circuit, the output noise due to the thermal noise of a resistor will depend on the actual transfer function of the noise source. The bandwidth will never be infinite because the transfer function of either the noise source or the device measuring the output noise will cause limitations. Consequently, the thermal noise voltage of a resistor in a finite bandwidth is maximum for a given resistor value. That maximum thermal noise voltage depends on the stop frequencies and decreases for both smaller and larger resistor values
  • Keywords
    RC circuits; circuit noise; linear network analysis; resistors; thermal noise; arbitrary resistor; finite bandwidth; frequency limits; maximum noise voltage; mean square noise voltage; noise voltage; output noise; stop frequencies; thermal noise; transfer function; Bandwidth; Circuit noise; Equations; Frequency; Noise measurement; Parasitic capacitance; Resistors; Thermal resistance; Voltage; White noise;
  • fLanguage
    English
  • Journal_Title
    Instrumentation & Measurement Magazine, IEEE
  • Publisher
    ieee
  • ISSN
    1094-6969
  • Type

    jour

  • DOI
    10.1109/5289.975462
  • Filename
    975462
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1558416