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Near‐field absorption in a circular cylinder from electric and magnetic line sources
Author(s) -
Morita N.,
Andersen J. Bach
Publication year - 1982
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/bem.2250030210
Subject(s) - cylinder , polarization (electrochemistry) , magnetic field , electric field , electromagnetic radiation , physics , optics , acoustics , absorption (acoustics) , electromagnetic field , materials science , computational physics , mechanics , geometry , chemistry , mathematics , quantum mechanics
A homogeneous, lossy circular cylinder is used as a simple model of a biological object in which interior heating is produced by the absorption of electromagnetic waves. For this model, we determined the optimum frequency, polarization, orientation and shape of applicators. Analytical and numerical results are given for both electric and magnetic line sources, with three different polarizations relative to the cylinder. Coupling efficiencies and contour plots are presented for a range of parameters. One particularly interesting result is the production of maximum energy deposition at the center of a cylinder of muscle tissue when exposed in the 100‐MHz frequency range by the use of four applicators surrounding the cylinder.