Simulations of microwave characteristics of high-temperature superconducting microstrip lines by using an empirical two-fluid model

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    Abstract

    A numerical analysis of the microwave propagation characteristics of a high-temperature superconducting microstrip transmission line is presented. It is based on the transmission line theory and empirical two-fluid model which appropriately incorporates the quasiparticle scattering and residual loss of the superconductor. First, the calculated attenuation constant and phase velocity are compared with those predicted by the conventional two-fluid model for a YBa 2Cu 3O 7-δ microstrip line with a linear substrate, lanthanum aluminate, LaAlO 3. Next, we have specifically investigated the effects of nonlinear substrate such as strontium titanate, SrTiO 3, on the attenuation constant and phase velocity. The tunable feature of such a microwave device owing to the nonlinear dielectric ferroelectric is illustrated and discussed.

    Original languageEnglish
    Pages (from-to)1776-1783
    Number of pages8
    JournalIEEE Transactions on Applied Superconductivity
    Volume12
    Issue number2
    DOIs
    Publication statusPublished - 2002 Jun 1

    Fingerprint

    two fluid models
    Phase velocity
    Microstrip lines
    phase velocity
    attenuation
    Microwaves
    microstrip transmission lines
    Transmission line theory
    microwaves
    Lanthanum
    Microwave devices
    Fluids
    Substrates
    Strontium
    lanthanum
    strontium
    Superconducting materials
    transmission lines
    Ferroelectric materials
    numerical analysis

    Keywords

    • Ferroelectric
    • High-temperature superconductor
    • Microstrip transmission line
    • Propagation characteristics

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Physics and Astronomy (miscellaneous)

    Cite this

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    title = "Simulations of microwave characteristics of high-temperature superconducting microstrip lines by using an empirical two-fluid model",
    abstract = "A numerical analysis of the microwave propagation characteristics of a high-temperature superconducting microstrip transmission line is presented. It is based on the transmission line theory and empirical two-fluid model which appropriately incorporates the quasiparticle scattering and residual loss of the superconductor. First, the calculated attenuation constant and phase velocity are compared with those predicted by the conventional two-fluid model for a YBa 2Cu 3O 7-δ microstrip line with a linear substrate, lanthanum aluminate, LaAlO 3. Next, we have specifically investigated the effects of nonlinear substrate such as strontium titanate, SrTiO 3, on the attenuation constant and phase velocity. The tunable feature of such a microwave device owing to the nonlinear dielectric ferroelectric is illustrated and discussed.",
    keywords = "Ferroelectric, High-temperature superconductor, Microstrip transmission line, Propagation characteristics",
    author = "Chien-Jang Wu",
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    T1 - Simulations of microwave characteristics of high-temperature superconducting microstrip lines by using an empirical two-fluid model

    AU - Wu, Chien-Jang

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    N2 - A numerical analysis of the microwave propagation characteristics of a high-temperature superconducting microstrip transmission line is presented. It is based on the transmission line theory and empirical two-fluid model which appropriately incorporates the quasiparticle scattering and residual loss of the superconductor. First, the calculated attenuation constant and phase velocity are compared with those predicted by the conventional two-fluid model for a YBa 2Cu 3O 7-δ microstrip line with a linear substrate, lanthanum aluminate, LaAlO 3. Next, we have specifically investigated the effects of nonlinear substrate such as strontium titanate, SrTiO 3, on the attenuation constant and phase velocity. The tunable feature of such a microwave device owing to the nonlinear dielectric ferroelectric is illustrated and discussed.

    AB - A numerical analysis of the microwave propagation characteristics of a high-temperature superconducting microstrip transmission line is presented. It is based on the transmission line theory and empirical two-fluid model which appropriately incorporates the quasiparticle scattering and residual loss of the superconductor. First, the calculated attenuation constant and phase velocity are compared with those predicted by the conventional two-fluid model for a YBa 2Cu 3O 7-δ microstrip line with a linear substrate, lanthanum aluminate, LaAlO 3. Next, we have specifically investigated the effects of nonlinear substrate such as strontium titanate, SrTiO 3, on the attenuation constant and phase velocity. The tunable feature of such a microwave device owing to the nonlinear dielectric ferroelectric is illustrated and discussed.

    KW - Ferroelectric

    KW - High-temperature superconductor

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    KW - Propagation characteristics

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