MHEMT G-band low-noise amplifiers

Mikko Kärkkäinen, Mikko Kantanen, Sylvain Caujolle-Bert, Mikko Varonen, Rainer Weber, Arnulf Leuther, Matthias Seelmann-Eggebert, Ari Alanne, Petri Jukkala, Tapani Närhi, Kari A.I. Halonen

    Research output: Contribution to journalArticleScientificpeer-review

    1 Citation (Scopus)


    To improve the performance of G-band equipment for humidity sounding of the atmosphere, a high-gain and low-noise amplifier is needed. Here we describe and report the performance of several low-noise amplifier microchips intended for 183-GHz water vapor profiling application. The chips are manufactured in metamorphic high electron mobility transistor technology having a gate length of 50 nanometers. The measured results show a noise figure of 4-7 dB and 15-22 dB gain from 170 to 200 GHz.
    Original languageEnglish
    Pages (from-to)459-468
    JournalIEEE Transactions on Terahertz Science and Technology
    Issue number4
    Publication statusPublished - 2014
    MoE publication typeNot Eligible


    • millimeter wave integrated circuits
    • low-noise amplifiers
    • MMIC amplifiers
    • metamorphic HEMT


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