Title :
Active load modules for W-band radiometer calibration
Author :
Weissbrodt, Ernst ; Tessmann, Axel ; Schlechtweg, Michael ; Kallfass, Ingmar ; Ambacher, Oliver
Author_Institution :
Fraunhofer Inst. for Appl. Solid-State Phys. (IAF), Freiburg, Germany
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].
Keywords :
HEMT integrated circuits; MMIC; calibration; radiometers; radiometry; ACL; AHL; IAF metamorphic high electron mobility transistor technology; MMIC; W-band radiometer calibration; active cold load module; active hot load circuit; mHEMT technology; millimeter-wave monolithic integrated circuits; switching front-ends; wafer noise measurement setup; waveguide modules; Calibration; MMICs; Microwave radiometry; Microwave theory and techniques; Noise; Noise measurement; Temperature measurement; ACL; AHL; MMIC; W-band; active cold load; active hot load; calibration; mHEMT; radiometer;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6350708
