Numerical analysis of SAR and temperature distribution in two dimensional human head model based on FDTD parameters and the polarization of electromagnetic wave

Lwin, Zin Mar; Yokota, Mitsuhiro

doi:10.1016/j.aeue.2019.03.010

Cited by 12 publications

(5 citation statements)

References 9 publications

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“…FDTD method [24][25][26][27] for numerical simulation of propagation of electromagnetic waves is based on Maxwell's equations in differential form (1) (2)…”

Section: Finite Difference Time Domain (Fdtd) Methodsmentioning

confidence: 99%

Finite difference time domain method of lightpropagation through inhomogeneous media

Stevanovic,

Markovic

et al. 2023

Optica Applicata

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Propagation of arbitrarily polarized light through inhomogeneous media is modeled in this paper. The model can include parameters of the media such as relative dielectric constant, relative magnetic constant and electric conductivity. The orientation of the electric field strength of the light source could be defined arbitrarily, and in this paper two polarization modes are considered: transverse electric (TE) mode and transverse magnetic (TM) mode. The electric field vector could change its orientation in dependence on the characteristics of the media. The model developed in this paper is based on the finite difference time domain (FDTD) method and Maxwell’s equations. A two-dimensional formulation of FDTD is applied in this computing. Several cases were considered, and the results obtained in this paper agree with the literature. The model shown in this paper does not require much time for computer processing and can be easily applied for specific cases of media, source, and light.

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“…FDTD method [24][25][26][27] for numerical simulation of propagation of electromagnetic waves is based on Maxwell's equations in differential form (1) (2)…”

Section: Finite Difference Time Domain (Fdtd) Methodsmentioning

confidence: 99%

Finite difference time domain method of lightpropagation through inhomogeneous media

Stevanovic,

Markovic

et al. 2023

Optica Applicata

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“…Their study is based on three-layer human head model that is exposed to different frequencies of different mobile phone technologies such as Wi-Fi and Bluetooth. Lwin et al [29] performed a numerical analysis of a 2D simplified human head model exposed to mobile phone radiation. They investigated SAR and temperature distributions at frequencies ranging from 300 to 1800 MHz.…”

Section: Introductionmentioning

confidence: 99%

Realistic Computational Modeling of Biothermal Effects Inside Human Head Exposed to Mobile Phone Radiation

Ramadan

Shafey

Abdelshafe

et al. 2023

JES. Journal of Engineering Sciences

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The recent development of smartphones and the introduction of newer mobile phone networks led to increasing concerns over the prolonged exposure of delicate human organs to mobile phone radiation. This study investigates the Specific Absorption Rate (SAR) and temperature distributions inside anatomical head model exposed to mobile phone radiation. The effects of different microwave frequencies (0.9, 1.8, and 3 GHz) and different antenna positions (voice and video calling positions) were studied. The propagation, penetration, and absorption equations of the microwave radiation as well as the bioheat equation were numerically solved inside the computational domain. The numerical results of the present study were verified by comparison to other published numerical solutions. The Peak overall SAR and temperature rise were found in the voice calling position for the 3 GHz frequency as 14.9 W/kg and 1.6 °C, respectively. The model showed negligible peak SAR and temperature rise values for the video calling position. Moreover, the peak SAR and temperature rise locations are not correlated. Additionally, the temperature rise exceeded 63% of the final value at 6 minutes of exposure time for all the studied microwave frequencies.

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“…Simulating the specific absorption rates in different human tissues at 4G … (Adheed Hasan Sallomi) 2861 researchers using a specific device (thermal imaging camera) in order to measure the changes in body temperature, from which the SAR value is calculated [8]. As opposed to this, most studies first calculated the SAR result, from which the temperature rise was derived [9]- [15].…”

Section: Introductionmentioning

confidence: 99%

Simulating the specific absorption rates in different human tissues at 4G frequencies for mobile phones

Sallomi

Ahmed

2023

Bulletin EEI

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Employing electromagnetic waves in mobile communication networks has increased the level of human exposure to electromagnetic fields that may result in concerns about health hazards associated involves the soaking up of cellular phone electromagnetic energy. The human body is penetrated by the electromagnetic fields that emit from a cell phone. The specific absorption rate (SAR) that is generated in the human head and body layers usually expresses the thermal effect on human tissue. The main objective of this paper is to investigate the thermal effects of the electromagnetic field induced inside the human head and body through the construction of a simplified model for both. The RF-source and human body models are built by using the ANSYS high-frequency structural simulator (HFSS). A planar inverted-F antenna (PIFA) will use to assign SAR values to different body tissues for the fourth generation (4G) of mobile phone communication at an operational frequency of 2.6 GHz and power radiated of 125 mW. The model is simulated and analyzed to evaluate the SAR induced at different human tissues depending on the source-to-antenna distance and its generated values must not exceed the safe limits for harmful thermal effects.

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Numerical analysis of SAR and temperature distribution in two dimensional human head model based on FDTD parameters and the polarization of electromagnetic wave

Cited by 12 publications

References 9 publications

Finite difference time domain method of lightpropagation through inhomogeneous media

Finite difference time domain method of lightpropagation through inhomogeneous media

Realistic Computational Modeling of Biothermal Effects Inside Human Head Exposed to Mobile Phone Radiation

Simulating the specific absorption rates in different human tissues at 4G frequencies for mobile phones

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