Optimal Value of Series Capacitors for Uniform Field Distribution in Transmission Line MRI Coils

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    Abstract

    Transmission lines are often used as coils in high field magnetic resonance imaging (MRI). Due to the distributed nature of transmission lines, coils based on them produce inhomogeneous field. This work investigates application of series capacitors to improve field homogeneity along the coil. The equations for optimal values of evenly distributed capacitors are derived and expressed in terms of the implemented transmission line parameters.The achieved magnetic field homogeneity is estimated under quasistatic approximation and compared to the regular transmission line resonator. Finally, a more practical case of a microstrip line coil with two series capacitors is considered.
    Original languageEnglish
    Article number3480965
    JournalJournal of Sensors
    Volume2016
    Number of pages7
    ISSN1687-725X
    DOIs
    Publication statusPublished - 2016

    Bibliographical note

    Copyright © 2016 Vitaliy Zhurbenko.This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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