105 GHz Notch Filter Design for Collective Thomson Scattering

Vedran Furtula, Poul Michelsen, Frank Leipold, T. Johansen, Søren Bang Korsholm, Fernando Meo, Dmitry Moseev, Stefan Kragh Nielsen, Mirko Salewski, Morten Stejner Pedersen

    Research output: Contribution to journalJournal articleResearchpeer-review

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    Abstract

    A millimeter-wave notch filter with 105-GHz center frequency, >20-GHz passband coverage, and 1-GHz rejection bandwidth has been constructed. The design is based on a fundamental rectangular waveguide with cylindrical cavities coupled by narrow iris gaps, i.e., small elongated holes of negligible thickness. We use numerical simulations to study the sensitivity of the notch filter performance to changes in geometry and in material conductivity within a bandwidth of ±10 GHz. The constructed filter is tested successfully using a vector network analyzer monitoring a total bandwidth of 20 GHz. The typical insertion loss in the passband is
    Original languageEnglish
    JournalFusion Science and Technology
    Volume59
    Issue number4
    Pages (from-to)670-677
    ISSN1536-1055
    Publication statusPublished - 2011

    Keywords

    • Fusion energy

    Cite this

    Furtula, V., Michelsen, P., Leipold, F., Johansen, T., Korsholm, S. B., Meo, F., ... Stejner Pedersen, M. (2011). 105 GHz Notch Filter Design for Collective Thomson Scattering. Fusion Science and Technology, 59(4), 670-677.
    Furtula, Vedran ; Michelsen, Poul ; Leipold, Frank ; Johansen, T. ; Korsholm, Søren Bang ; Meo, Fernando ; Moseev, Dmitry ; Nielsen, Stefan Kragh ; Salewski, Mirko ; Stejner Pedersen, Morten. / 105 GHz Notch Filter Design for Collective Thomson Scattering. In: Fusion Science and Technology. 2011 ; Vol. 59, No. 4. pp. 670-677.
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    title = "105 GHz Notch Filter Design for Collective Thomson Scattering",
    abstract = "A millimeter-wave notch filter with 105-GHz center frequency, >20-GHz passband coverage, and 1-GHz rejection bandwidth has been constructed. The design is based on a fundamental rectangular waveguide with cylindrical cavities coupled by narrow iris gaps, i.e., small elongated holes of negligible thickness. We use numerical simulations to study the sensitivity of the notch filter performance to changes in geometry and in material conductivity within a bandwidth of ±10 GHz. The constructed filter is tested successfully using a vector network analyzer monitoring a total bandwidth of 20 GHz. The typical insertion loss in the passband is",
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    author = "Vedran Furtula and Poul Michelsen and Frank Leipold and T. Johansen and Korsholm, {S{\o}ren Bang} and Fernando Meo and Dmitry Moseev and Nielsen, {Stefan Kragh} and Mirko Salewski and {Stejner Pedersen}, Morten",
    year = "2011",
    language = "English",
    volume = "59",
    pages = "670--677",
    journal = "Fusion Science and Technology",
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    publisher = "American Nuclear Society",
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    }

    Furtula, V, Michelsen, P, Leipold, F, Johansen, T, Korsholm, SB, Meo, F, Moseev, D, Nielsen, SK, Salewski, M & Stejner Pedersen, M 2011, '105 GHz Notch Filter Design for Collective Thomson Scattering', Fusion Science and Technology, vol. 59, no. 4, pp. 670-677.

    105 GHz Notch Filter Design for Collective Thomson Scattering. / Furtula, Vedran; Michelsen, Poul; Leipold, Frank; Johansen, T.; Korsholm, Søren Bang; Meo, Fernando; Moseev, Dmitry; Nielsen, Stefan Kragh; Salewski, Mirko; Stejner Pedersen, Morten.

    In: Fusion Science and Technology, Vol. 59, No. 4, 2011, p. 670-677.

    Research output: Contribution to journalJournal articleResearchpeer-review

    TY - JOUR

    T1 - 105 GHz Notch Filter Design for Collective Thomson Scattering

    AU - Furtula, Vedran

    AU - Michelsen, Poul

    AU - Leipold, Frank

    AU - Johansen, T.

    AU - Korsholm, Søren Bang

    AU - Meo, Fernando

    AU - Moseev, Dmitry

    AU - Nielsen, Stefan Kragh

    AU - Salewski, Mirko

    AU - Stejner Pedersen, Morten

    PY - 2011

    Y1 - 2011

    N2 - A millimeter-wave notch filter with 105-GHz center frequency, >20-GHz passband coverage, and 1-GHz rejection bandwidth has been constructed. The design is based on a fundamental rectangular waveguide with cylindrical cavities coupled by narrow iris gaps, i.e., small elongated holes of negligible thickness. We use numerical simulations to study the sensitivity of the notch filter performance to changes in geometry and in material conductivity within a bandwidth of ±10 GHz. The constructed filter is tested successfully using a vector network analyzer monitoring a total bandwidth of 20 GHz. The typical insertion loss in the passband is

    AB - A millimeter-wave notch filter with 105-GHz center frequency, >20-GHz passband coverage, and 1-GHz rejection bandwidth has been constructed. The design is based on a fundamental rectangular waveguide with cylindrical cavities coupled by narrow iris gaps, i.e., small elongated holes of negligible thickness. We use numerical simulations to study the sensitivity of the notch filter performance to changes in geometry and in material conductivity within a bandwidth of ±10 GHz. The constructed filter is tested successfully using a vector network analyzer monitoring a total bandwidth of 20 GHz. The typical insertion loss in the passband is

    KW - Fusion energy

    KW - Fusionsenergiforskning

    KW - Fusionsenergi

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    SP - 670

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    JO - Fusion Science and Technology

    JF - Fusion Science and Technology

    SN - 1536-1055

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