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Small implanted devices have been investigated with great interest for wireless medical applications due to the promise of different clinical usages in order to promote patient's independence. In these implanted device systems, an antenna plays an important role as a part of transmitting and receiving power. There are several issues to consider while designing an in-body antenna, including power consumption,...
The numerical dosimetry of women during pregnancy is an important issue in electromagnetic field safety. We had developed a whole-body numerical pregnant-woman model at 26-weeks' gestation. In this study, we developed pregnant-woman models that included the inherent tissues of pregnant women adjusted to the standard reference values at 12- and 20-weeks' gestation by deforming the existing pregnant-woman...
In this paper, a cavity-backed slot antenna for on-body BAN devices has been investigated. The electric field distributions inside and around the human body are numerically analyzed by the use of the FDTD method. According to the results, in the region on and near the human body, the dominant component of electric field is vertical to the body surface, and the propagation mode is assumed to be creeping...
This paper proposed a PIFA with an artificial cardiac pacemaker for use of MICS. The calculation model is composed of the PIFA and the pacemaker embedded in the 2/3 muscle-equivalent phantom. The distance between the surface of the phantom and the antenna is changed and the model is numerically analyzed by use of the FDTD method. Numerical results show that as the distance d increases, the real part...
In this paper, first, FDTD, semi-implicit method for pressure linked equations (SIMPLE), Monte Carlo and radiative energy absorption distribution (READ) methods are combined to calculate electromagnetic field and all the heat transfer phenomena of heat transport, heat transfer by air convection and heat radiation (It is called FDTD-SIMPLE-MR method.). The temperature distribution of an one-layer EM-absorber...
In this paper, first, FDTD, semi-implicit method for pressure linked equations (SIMPLE), Monte Carlo and radiative energy absorption distribution (READ) methods are combined to calculate electromagnetic field and all the heat transfer phenomena of heat transport, heat transfer by air convection and heat radiation (It is called FDTD-SIMPLE-MR method.). The temperature distribution of A/4 type EM-absorber...
This paper describes the temperature distribution analysis of lambda/4 type EM-absorber using resistive film when high electric power is injected to the absorber. For the temperature analysis, FDTD method is used to analyze electromagnetics and SIMPLE (semi-implicit method for pressure linked equations) method is used for calculation of heat transport and air convection enabling to analyze local heat...
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