Variational formulation of open-ended coaxial line in contact with layered biological medium

  title={Variational formulation of open-ended coaxial line in contact with layered biological medium},
  author={Esko Alanen and Tapani Lahtinen and Jukka-Pekka Nuutinen},
  journal={IEEE Transactions on Biomedical Engineering},
An open-ended coaxial probe designed to measure layered biological media is analyzed with a new method. The probe is considered as an electrostatic circuit element whose capacitance is solved using a stationary functional. The fundamental transverse electric and magnetic field (TEM)-mode and the series of evanescent wavemodes in the coaxial cable are used as basis functions. The field outside the probe is solved using a Hankel transform. The capacitance is calculated for homogeneous materials… CONTINUE READING


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