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IEEE Trans Biomed Eng. 2006 Mar;53(3):533-7.

A floating sleeve antenna yields localized hepatic microwave ablation.

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  • 1Department of Electrical and Computer Engineering, University of Wisconsin, Madison, WI 53706 USA.


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. Index Terms-Ablation, coaxial aperture antennas, finite element methods, floating sleeve, microwave heating.

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