• DocumentCode
    1326049
  • Title

    High dynamic range 140??220 GHz radiometer using dual-channel superheterodyne receivers

  • Author

    Wu, T.Y.

  • Author_Institution
    Nat. Metrol. Centre, A*STAR, Singapore, Singapore
  • Volume
    47
  • Issue
    19
  • fYear
    2011
  • Firstpage
    1083
  • Lastpage
    1084
  • Abstract
    A millimetre-wave radiometer in the range 140-220-GHz using dual-channel superheterodyne receivers is described. The dynamic range of the radiometer is estimated to be 163-dB. The linearity of the receiver is traceable to a low-frequency voltage ratio standard. A 10-120-dB synthesised rotary vane attenuator has been measured with uncertainties of 0.022-0.90-dB at 220-GHz to verify the accuracy of the radiometer.
  • Keywords
    attenuators; millimetre wave measurement; radiometers; superheterodyne receivers; dual channel superheterodyne receivers; frequency 140 GHz to 220 GHz; high dynamic range radiometer; millimetre wave radiometer; rotary vane attenuator;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el.2011.2066
  • Filename
    6025146
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1326049