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KMID : 0372919970180030261
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Journal of Biomedical Engineering Research
1997 Volume.18 No. 3 p.261 ~ p.266
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SAR Pattern of Biological Objects Contacted with Coaxial Waveguide Antenna Using the FDTD Method
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Koo Sung-Mo
Lee Chang-Won
Won Chul-Ho
Cho Jin-Ho
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Abstract
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Nonevasive multifrequency microwave radiometry using coaxial waveguide antenna has been investigated for a homogeneous and four layer human body model. The coupling between coaxial waveguide antenna and a biological object was analyzed by use of the finite-difference time-domain(FDTD) method to obtain the absorbed power patterns in the media. The object studied in this paper was a homogeneous and four-layered lossy medium. The specific absorption rates(SAR) distribution which was corresponding to the temperature distribution was calculated in each region by use of the steady-state response in FDTD method. The SAR pattern of 1.2GHz was compared with that of 1.8GHz.
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KEYWORD
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Noninvasive multifrequency microwave radiometry, SAR distribution, FDTD method
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