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

fYear

2012

fDate

22-27 July 2012

Firstpage

2945

Lastpage

2948

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International

Conference_Location

Munich

ISSN

2153-6996

Print_ISBN

978-1-4673-1160-1

Electronic_ISBN

2153-6996

Type

conf

DOI

10.1109/IGARSS.2012.6350708

Filename

6350708