A K-band RF-MEMS-enabled reconfigurable and multifunctional low-noise amplifier hybrid circuit

R. Malmqvist (Corresponding Author), C. Samuelsson, A. Gustafsson, Pekka Rantakari, S. Reyaz, Tauno Vähä-Heikkilä, A. Rydberg, Jussi Varis, D. Smith, R. Baggen

    Research output: Contribution to journalArticleScientificpeer-review

    2 Citations (Scopus)

    Abstract

    A K-band (18–26.5 GHz) RF-MEMS-enabled reconfigurable and multifunctional dual-path LNA hybrid circuit (optimised for lowest/highest possible noise figure/linearity, resp.) is presented, together with its subcircuit parts. The two MEMS-switched low-NF (higher gain) and high-linearity (lower gain) LNA circuits (paths) present 16.0 dB/8.2 dB, 2.8 dB/4.9 dB and 15 dBm/20 dBm of small-signal gain, noise figure, and 1 dB compression point at 24 GHz, respectively. Compared with the two (fixed) LNA subcircuits used within this design, the MEMS-switched LNA circuit functions show minimum 0.6–1.3 dB higher NF together with similar values of P1dB at 18–25 GHz. The gain of one LNA circuit path is reduced by 25–30 dB when the MEMS switch and active circuitry used within in the same switching branch are switched off to select the other LNA path and minimise power consumption.
    Original languageEnglish
    Article number284767
    Number of pages7
    JournalActive and Passive Electronic Components
    Volume2011
    DOIs
    Publication statusPublished - 2011
    MoE publication typeA1 Journal article-refereed

    Keywords

    • K-band
    • RF-MEMS
    • SPDT switch
    • low noise amplifier
    • MMIC

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