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The present study investigates the relationship between the maximal temperature elevation and peak mass-averaged specific absorption rate (SAR) in different human head models, for frequencies ranging from 1 to 10 GHz. A half-wave dipole antenna is considered as a wave source at respective frequencies. Bioheat equation is used to compute the microwave-induced temperature elevation. In the post-processing,...
The safety assessment of implant EM exposure is typically performed by numerically or experimentally evaluating field strengths in (frequently strongly simplified) phantoms or anatomical models. Determining quantities more closely related to the effect of concern can aid in detecting insufficient safety margins, reducing the necessity for overly conservative limits, and increasing the understanding...
Exposure to radio-frequency electromagnetic (EM) fields has become an important issue in preserving human health. In particular, conducting numerical dosimetry on the mother and fetus during pregnancy has become an important issue. We developed novel pregnant female models with anatomically realistic fetal and gestational tissues at 20, 26, and 29 weeks of pregnancy. In this paper, we present the...
Recently, wireless radio terminals such as mobile phones and tablet computers are increasing and developing rapidly. The effects of the electromagnetic (EM) waves in the human body from the wireless radio terminal have been paid attention. Therefore, we have calculated the specific absorption rate (SAR) in human tissues radiated from simple EM source models as like dipole antennas. In this paper,...
The newly developed electrode for human body model, which is used for evaluation of EMI to a cardiac Active Implant Medical Device (AIMD), is reported. The electrode consists of applying and monitoring of signal portion and reduces crosstalk and signal leakage in application of cardiac pacing and sensing. It is practical and sufficient means of simulating EMI effects to an AIMD.
This paper presents the dosimetric evaluation of the infant's exposure to electromagnetic fields from an electronic article surveillance system working at 125 kHz. A recently developed realistic infant anatomical model is deformed to achieve the standing, sitting and the supine postures. We perform the quasi-static calculation for the 99th percentile induced electric field, the peak specific absorption...
Recent advances in wireless power transmission have enabled various new applications, one of which is wireless charging of an electrical vehicle. In this application, electric power is wirelessly transmitted using strong electromagnetic fields from a coil located on the ground to another coil attached to the vehicle. In this study, we use computational modelling to investigate the human exposure to...
The present study investigates the SAR (specific absorption rate) and the induced electric field in an anatomically based model for the magnetic field from a wireless power transfer system. The waiting and charging conditions are considered. The transfer frequency considered herein is from 100 kHz and 150 kHz where a magneto-quasi-static approximation is valid. A two-step quasi-static method comprised...
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