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  4. A 243 GHz LNA module based on mHEMT MMICs with integrated waveguide transitions
 
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2013
Journal Article
Title

A 243 GHz LNA module based on mHEMT MMICs with integrated waveguide transitions

Abstract
For use in a millimeter-wave direct detection radiometer for earth remote sensing, we have developed a low-noise amplifier (LNA) module with a small-signal gain of 19.5 dB at 243 GHz and a 3 dB bandwidth of 40 GHz. The implemented three-stage LNA MMIC has been manufactured using a 50 nm gate length metamorphic HEMT (mHEMT) technology on 50 m thick GaAs substrates. Each of the two on-chip integrated E-plane probe waveguide transitions offers a transmission loss of only 0.5 dB at 243 GHz including a 7.5 mm long WR-3.4 waveguide. Due to the low-loss packaging, the LNA module achieves a low noise figure of only 6.0 dB at room temperature.
Author(s)
Hurm, V.
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Weber, Rainer  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Tessmann, Axel  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Massler, Hermann
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Leuther, Arnulf  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Kuri, Michael  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Riessle, Markus  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Stulz, Hans-Peter  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Zink, Martin  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Schlechtweg, M.
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Ambacher, Oliver  
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Närhi, T.
Journal
IEEE microwave and wireless components letters  
DOI
10.1109/LMWC.2013.2272610
Language
English
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Keyword(s)
  • low-noise amplifier (LNA)

  • metamorphic HEMT

  • mHEMT

  • millimeter-wave integrated circuit (MMIC)

  • noise figure

  • packaging

  • waveguide transition

  • WR-03 waveguide band

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