A floating sleeve antenna yields localized hepatic microwave ablation

Deshan Yang, John M. Bertram, Mark C. Converse, Ann P. O'Rourke, John G. Webster*, Susan C. Hagness, James A. Will, David M. Mahvi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

139 Scopus citations


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.

Original languageEnglish (US)
Article number1597504
Pages (from-to)533-537
Number of pages5
JournalIEEE Transactions on Biomedical Engineering
Issue number3
StatePublished - Mar 2006


  • Ablation
  • Coaxial aperture antennas
  • Finite element methods
  • Floating sleeve
  • Microwave heating

ASJC Scopus subject areas

  • Biomedical Engineering


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