The assessment of human exposure to low frequency and high frequency electromagnetic fields using the boundary element analysis

Poljak, Dragan; Tham, Choy Yoong; Kovač, Nikša

doi:10.1016/s0955-7997(03)00070-5

Cited by 16 publications

(4 citation statements)

References 9 publications

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“…The average value of the conductivity of the human skin is assumed to be 0.1 S/m. Axial current induced in the body is governed by the Pocklington integrodifferential equation, derived from the continuity condition for the tangential electric field components [36]:…”

Section: B Sar In Cylindrical Human Body Modelmentioning

confidence: 99%

Human Exposure to Field Radiated by Vertical Dipole Antenna over a Lossy Half-Space using Analytical Approach

Cero Dinarević,

Poljak,

Dorić

2024

JCOMSS

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The paper deals with an efficient procedure to study human exposure to vertical dipole antenna above a flat lossy half space. The closed form expressions for the corresponding irradiated electrical field are obtained assuming the sinusoidal and triangular current distribution along the antenna, respectively. The corresponding integral field expressions are evaluated by means of numerical integration and analytical procedures. The computations have been undertaken in the far field zone for various antenna parameters and compared to rigorous numerical model. Provided the field radiated from the vertical dipole is determined, whole body average Specific Absorption Rate (SARWB) is computed in a simple parallelepiped model of the human body and cylindrical model of the human body, respectively. Index terms-Human exposure, vertical dipole, radiated field, Specific Absorption Rate (SAR), parallelepiped model of the human body, cylindrical model of the human body.

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Section: B Sar In Cylindrical Human Body Modelmentioning

confidence: 99%

Human Exposure to Field Radiated by Vertical Dipole Antenna over a Lossy Half-Space using Analytical Approach

Cero Dinarević,

Poljak,

Dorić

2024

JCOMSS

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“…cylindrical body representation [3], involving numerical solution of Pocklington integrodifferential equation using the Galerkin-Bubnov boundary element method (GB-BEM) [3,4].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the human exposure to transient and time-harmonic fields using the enhanced transmission line theory approach

et al. 2017

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The paper deals with the assessment of human exposure to the transient electromagnetic fields and high-frequency (HF) radiation. The formulation of the problem is based on a simplified cylindrical representation of the human body. The analysis is based on the enhanced transmission line (TL) theory. For this purpose, in order to quantify the induced current inside the human body, we solve linear system equations, where the electromagnetic field excitation is represented by two equivalent current and voltage generators. Once the axial current is determined, it is possible to calculate the specific absorption rate (SAR). Some illustrative computational examples are presented in the paper.

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“…Accordingly, an induced current will be generated inside human body. [26][27][28] Such electrical signals are intuitively considered as interference in electrical systems which need to be shielded via special designs. In this work, however, the weak energy is subtly collected and applied as a power source to drive the a-Ga 2 O 3 PD.Specifically, the self-powered UV photodetection system is organized with an integration of a receiving electrode, a full-wave rectifier, and an a-Ga 2 O 3 UV PD with metalsemiconductor-metal (MSM) structure.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

Integrated Flexible Ga₂O₃ Deep UV Photodetectors Powered by Environmental Electromagnetic Radiation Energy

Wang

Liang

Han

et al. 2021

Adv Materials Technologies

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This work reports an integrated flexible deep ultraviolet (UV) photodetection system hosting an amorphous Ga2O3 (a‐Ga2O3) photodetector (PD) and an energy harvesting component including a receiving electrode and a full‐wave rectifier. An alternating signal is induced by the coupling of human body with environmental electromagnetic radiation through human hand's contact with the receiving electrode. The signal is subsequently converted into direct current (DC) by the rectifier which is composed of four thin‐film diodes with high rectification ratio (≈106) and fast response time (rising time ≈240 µs and falling time ≈680 µs). Driven by the DC output, the a‐Ga2O3 PD achieves a photoresponsivity of 0.10 A W−1 and a detectivity of 2.24 × 1011 Jones under 254 nm UV illumination. The integrated flexible a‐Ga2O3 UV PD manifests a repeatable and pleasurable response behavior with a bending radius of 15 mm, providing a new paradigm for utilizing the environmental energy as the power source in wearable electronics.

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The assessment of human exposure to low frequency and high frequency electromagnetic fields using the boundary element analysis

Cited by 16 publications

References 9 publications

Human Exposure to Field Radiated by Vertical Dipole Antenna over a Lossy Half-Space using Analytical Approach

Human Exposure to Field Radiated by Vertical Dipole Antenna over a Lossy Half-Space using Analytical Approach

Assessment of the human exposure to transient and time-harmonic fields using the enhanced transmission line theory approach

Integrated Flexible Ga₂O₃ Deep UV Photodetectors Powered by Environmental Electromagnetic Radiation Energy

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The assessment of human exposure to low frequency and high frequency electromagnetic fields using the boundary element analysis

Cited by 16 publications

References 9 publications

Human Exposure to Field Radiated by Vertical Dipole Antenna over a Lossy Half-Space using Analytical Approach

Human Exposure to Field Radiated by Vertical Dipole Antenna over a Lossy Half-Space using Analytical Approach

Assessment of the human exposure to transient and time-harmonic fields using the enhanced transmission line theory approach

Integrated Flexible Ga2O3 Deep UV Photodetectors Powered by Environmental Electromagnetic Radiation Energy

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Product

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Integrated Flexible Ga₂O₃ Deep UV Photodetectors Powered by Environmental Electromagnetic Radiation Energy