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We introduce a numerical assessment methodology to understand the EMI imposed by coupled-resonant type wireless power transfer systems on active implantable medical devices (implantable cardiac pacemaker / cardioverter defibrillator). A numerical estimation model that consists of resonant coils and a human torso phantom with a pacemaker model is constructed. Numerical simulation based on the finite...
The current standardized SAR evaluation technique is optimized with respect to the requirements of maximal repeatability and minimal measurement uncertainty. The uncertainty satisfies the requirement of being independent of the source and source-phantom coupling mechanism. These requirements are best achieved by the current SAR evaluation technique that is adaptive and based on 3D scanning of the...
There are many commercial shields for 3G and 4G mobile phones re-emerging onto the market, claiming specific absorption rate (SAR) reduction; however their effectiveness is questionable. In this paper, their SAR and induced electric field (E-field) are measured, and the corresponding induced E-field inside the human body with and without implanted medical devices is analyzed. Results have indicated...
In this paper, we analyzed SAR and induced electric field inside of the Korean human model and flat phantoms exposed to a wireless multi-phone charger operating at 6.78 MHz, and also investigated correlation characteristics between SAR and spatially averaged magnetic field. For analysis, commercial simulators, XFDTD and HFSS were used. The simulated exposure levels were compared with the ICNIRP and...
SAR measurement requirement which had been applied only to mobile phones was expanded to other portable wireless communication equipments used within 20 cm from the human body according to Korea radio regulation in Jan. 2012. The two-way radio operating at 150 MHz was newly included in revised radio regulation of SAR assessment. Although international SAR measurement standard IEC 62209-2 requires...
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