A Floating Sleeve Antenna Yields Localized Hepatic Microwave Ablation

Authors:
  • JBJ.M. Bertram
    J.M. Bertram
  • MCM.C. Converse
    M.C. Converse
  • AOA.P. O'Rourke
    A.P. O'Rourke
  • JWJ.G. Webster
    J.G. Webster
  • SHS.C. Hagness
    S.C. Hagness
  • JWJ.A. Will
    J.A. Will
  • DMD.M. Mahvi
    D.M. Mahvi

Abstract
We report a novel coaxial antenna for hepatic microwave ablation. This device uses a floating sleeve, that is, a metal conductor electrically isolated from the outer connector of the antenna coaxial body, to achieve a highly localized specific absorption rate pattern that is independent of insertion depth. This floating sleeve coaxial dipole antenna has low power reflection in the 2.4-GHz IMS band. Ex vivo experiments confirm our numerical simulation results.

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