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  4. Active load modules for W-band radiometer calibration
 
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2012
Conference Paper
Title

Active load modules for W-band radiometer calibration

Abstract
An active cold load (ACL) and an active hot load (AHL) circuit were developed in W-band (75 - 110 GHz) and manufactured in IAF's metamorphic high electron mobility transistor (mHEMT) technology. The millimeter-wave monolithic integrated circuits (MMICs) were radiometricly characterized with a dedicated hot cold on wafer noise measurement setup and packaged into waveguide modules. The active load modules were then again characterized, to be used as reference loads in radiometry systems with switching front-ends [1].
Author(s)
Weissbrodt, E.
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Tessmann, Axel  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Schlechtweg, M.
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Kallfass, I.
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Ambacher, Oliver  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Mainwork
IGARSS 2012, IEEE International Geoscience and Remote Sensing Symposium  
Conference
International Geoscience and Remote Sensing Symposium (IGARSS) 2012  
DOI
10.1109/IGARSS.2012.6350708
Language
English
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Keyword(s)
  • active cold load

  • active hot load

  • ACL

  • AHL

  • radiometer

  • calibration

  • W-band

  • mHEMT

  • MMIC

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