Proceedings of the 2015 International Conference on Modeling, Simulation and Applied Mathematics

FDTD Simulation of a Mobile Phone Operating Near Metals

Authors
Nuttaka Homsup, Terapass Jariyanorawiss
Corresponding Author
Nuttaka Homsup
Available Online August 2015.
DOI
https://doi.org/10.2991/msam-15.2015.42How to use a DOI?
Keywords
FDTD, PML, metal wall ,one metal cell
Abstract
This paper presents Finite Difference Time Domain (FDTD) simulation results of operating mobile phone near metal wall sheet and near a one metal cell. Results show that placing a one metal cell closed to a mobile phone is more harmful to human health than a metal wall sheet. The one metal cell is the Yee’s cell that has a metal characteristic, high conductivity and low permittivity. In general, the mobile phone was modeled by a dipole antenna so the one metal cell’s characteristic can be chosen as the dipole’s characteristic. This simulation uses Finite Difference Time Domain (FDTD) scheme. It’s domain is divided into two parts: the physical domain and the artificial domain. The physical domain consists of a dipole antenna located at 1 cm from a human head model and a one metal cell varied distance ( l) from the dipole. In addition, the dipole antenna operated at 900 MHz and 1800 MHz was used in the simulation. The artificial domain is a Perfectly Matched Layer (PML). The PML acts as an electromagnetic field absorbing layer and was backed by a Perfect Electric Conductor (PEC). The Specific Absorption Rate (SAR) was computed and averaged on a tissue mass of one gram and ten grams, SAR 1-g and SAR 10-g, respectively. Also, the average power (Pavg) absorbed in various human tissues is computed with a distance between the dipole antenna and a one metal cell as a varying parameter ( l). Simulation results from a one metal cell will be compared to referenced values. There are three reference SAR values: the standard SAR 1-g (FCC, Federal Communications Commission), the simulation in an open area and the simulation with the metal wall. In this case, results from the simulation show that the computed SAR 1-g and SAR 10-g values are not exceed the limitation values established by various standard institutes (1.6 Watt/kg), however, for l = 0-5 cm, both of the SAR and the average power absorb are higher than the simulation with the metal wall and the simulation in an open area.
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Proceedings
2015 International Conference on Modeling, Simulation and Applied Mathematics
Part of series
Advances in Intelligent Systems Research
Publication Date
August 2015
ISBN
978-94-6252-104-9
ISSN
1951-6851
DOI
https://doi.org/10.2991/msam-15.2015.42How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Nuttaka Homsup
AU  - Terapass Jariyanorawiss
PY  - 2015/08
DA  - 2015/08
TI  - FDTD Simulation of a Mobile Phone Operating Near Metals
BT  - 2015 International Conference on Modeling, Simulation and Applied Mathematics
PB  - Atlantis Press
SN  - 1951-6851
UR  - https://doi.org/10.2991/msam-15.2015.42
DO  - https://doi.org/10.2991/msam-15.2015.42
ID  - Homsup2015/08
ER  -