High dynamic range SQUID readout for frequency-domain multiplexers

    Research output: Contribution to journalArticleScientificpeer-review

    2 Citations (Scopus)

    Abstract

    A 16-SQUID array has been designed and fabricated, which shows 0.12 μΦ 0 Hz−1/2 flux noise at 4.2 K. The readout amplifier based on a cryogenic silicon-germanium bipolar transistor employs short-delay negative flux feedback and reaches 7 MHz bandwith for a 1 Φ 0p-p signal. The −1 dB compression is reached approximately at 4.2 Φ 0p-p amplitude when the signal frequency is 1 MHz. In the feedback mode the flux noise is anomalously increased to 0.35 μΦ 0 Hz−1/2.
    Original languageEnglish
    Pages (from-to)952 - 957
    Number of pages6
    JournalJournal of Low Temperature Physics
    Volume151
    Issue number3-4
    DOIs
    Publication statusPublished - 2008
    MoE publication typeA1 Journal article-refereed
    Event12th International Workshop on Low Temperature Detectors (LTD12) - Paris, France
    Duration: 22 Jul 200727 Jul 2007

    Fingerprint

    SQUIDs
    multiplexing
    dynamic range
    readout
    Fluxes
    Germanium
    Feedback
    Bipolar transistors
    Silicon
    bipolar transistors
    Cryogenics
    cryogenics
    germanium
    amplifiers
    silicon

    Keywords

    • Cryogenic semiconductor amplifiers
    • SQUID arrays
    • SQUIDs

    Cite this

    @article{3cebc9712d6c48e5a02c5b6ce788bbd7,
    title = "High dynamic range SQUID readout for frequency-domain multiplexers",
    abstract = "A 16-SQUID array has been designed and fabricated, which shows 0.12 μΦ 0 Hz−1/2 flux noise at 4.2 K. The readout amplifier based on a cryogenic silicon-germanium bipolar transistor employs short-delay negative flux feedback and reaches 7 MHz bandwith for a 1 Φ 0p-p signal. The −1 dB compression is reached approximately at 4.2 Φ 0p-p amplitude when the signal frequency is 1 MHz. In the feedback mode the flux noise is anomalously increased to 0.35 μΦ 0 Hz−1/2.",
    keywords = "Cryogenic semiconductor amplifiers, SQUID arrays, SQUIDs",
    author = "Mikko Kiviranta",
    year = "2008",
    doi = "10.1007/s10909-008-9765-y",
    language = "English",
    volume = "151",
    pages = "952 -- 957",
    journal = "Journal of Low Temperature Physics",
    issn = "0022-2291",
    publisher = "Springer",
    number = "3-4",

    }

    High dynamic range SQUID readout for frequency-domain multiplexers. / Kiviranta, Mikko.

    In: Journal of Low Temperature Physics, Vol. 151, No. 3-4, 2008, p. 952 - 957.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - High dynamic range SQUID readout for frequency-domain multiplexers

    AU - Kiviranta, Mikko

    PY - 2008

    Y1 - 2008

    N2 - A 16-SQUID array has been designed and fabricated, which shows 0.12 μΦ 0 Hz−1/2 flux noise at 4.2 K. The readout amplifier based on a cryogenic silicon-germanium bipolar transistor employs short-delay negative flux feedback and reaches 7 MHz bandwith for a 1 Φ 0p-p signal. The −1 dB compression is reached approximately at 4.2 Φ 0p-p amplitude when the signal frequency is 1 MHz. In the feedback mode the flux noise is anomalously increased to 0.35 μΦ 0 Hz−1/2.

    AB - A 16-SQUID array has been designed and fabricated, which shows 0.12 μΦ 0 Hz−1/2 flux noise at 4.2 K. The readout amplifier based on a cryogenic silicon-germanium bipolar transistor employs short-delay negative flux feedback and reaches 7 MHz bandwith for a 1 Φ 0p-p signal. The −1 dB compression is reached approximately at 4.2 Φ 0p-p amplitude when the signal frequency is 1 MHz. In the feedback mode the flux noise is anomalously increased to 0.35 μΦ 0 Hz−1/2.

    KW - Cryogenic semiconductor amplifiers

    KW - SQUID arrays

    KW - SQUIDs

    U2 - 10.1007/s10909-008-9765-y

    DO - 10.1007/s10909-008-9765-y

    M3 - Article

    VL - 151

    SP - 952

    EP - 957

    JO - Journal of Low Temperature Physics

    JF - Journal of Low Temperature Physics

    SN - 0022-2291

    IS - 3-4

    ER -