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Related Experiment Videos

Multi-turn split-conductor transmission-line resonators

S Serfaty1, N Haziza, L Darrasse

  • 1Unité de Recherche en Résonance Magnétique Médicale (Associate Laboratory of the CNRS [URA2212]), Université de Paris XI, Orsay, France.

Magnetic Resonance in Medicine
|November 5, 1997
PubMed
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Multi-turn split-conductor transmission-line resonators (MSTR) offer a tunable alternative for high-Q superconducting NMR probes. Their resonant frequency can be analytically calculated, simplifying design for various NMR frequencies.

Area of Science:

  • Physics
  • Electrical Engineering
  • Materials Science

Background:

  • High-Q, thin-film, high-temperature superconducting probes are crucial for advanced Nuclear Magnetic Resonance (NMR) applications.
  • Existing designs often rely on lumped tuning capacitors, which can limit performance and introduce losses.
  • A need exists for alternative resonator architectures that are simpler to design and tune across a wide frequency range.

Purpose of the Study:

  • To introduce and analyze the Multi-turn Split-Conductor Transmission-line Resonator (MSTR) as a viable alternative for NMR probes.
  • To develop an analytical method for calculating the resonant frequency of MSTRs.
  • To experimentally validate the design principles and calculations through fabricated resonators.

Main Methods:

Related Experiment Videos

  • Design and theoretical analysis of MSTRs based on transmission-line theory.
  • Development of an analytical formula for resonant frequency dependent on physical parameters.
  • Fabrication of MSTRs on a double copper-clad substrate.
  • Experimental measurement of resonant frequencies for fabricated MSTRs.

    • Main Results:

    • MSTRs can operate across a wide range of NMR frequencies without external tuning components.
    • An accurate analytical model was derived for predicting MSTR resonant frequencies.
    • Experimental results for fabricated MSTRs showed good agreement with predicted values.

    Conclusions:

    • MSTRs provide a promising, capacitor-free architecture for high-Q superconducting NMR probes.
    • The analytical calculation method simplifies the design process for MSTRs.
    • This resonator design offers an advantageous alternative for achieving tunable NMR probe frequencies.