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

Research output: Contribution to journalArticlepeer-review

143 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
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


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