Paper Info
Title
Unsplit-Field FDTD Simulation of a Mobile Phone Operating Near a Metal Wall
Abstract
The finite-difference time-domain (FDTD) is the most often used method for evaluating of electromagnetic fields in human tissue. This paper presents a study of heating effects resulted from using a mobile phone operating near a metal wall. The unsplit-field finite-difference time-domain (FDTD) simulation scheme was used in the simulation. The simulated physical domain consists of a dipole antenna, a high-resolution human head model and a metal wall enclosed by the perfectly matched layer (PML). In this case, the PML acts as an electromagnetic field absorbing layer and was backed by a perfect electric conductor. An antenna operated at 900 MHz and 1.8 GHz was used in the simulation. 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. The main purpose of the present research is to compare SAR resulted from a mobile phone operated at two different frequencies (900 MHz and 1.8 GHz) in the close proximity to a metal wall. Also, average powers(Pavg) absorbed in various human tissues were computed with a distance between an antenna and a metal wall ( Deltal ) as a varied parameter. 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. Also, the average power absorbed in all tissue models with a mobile phone operated at 1.8 GHz has an average power lower than those operated at 900 MHz except for the average power absorbed in muscle (7<Deltal<9 cm) and (7<Deltal<11 cm).
Year
DOI
Venue
2009
10.1109/CSIE.2009.707
Computer Science and Information Engineering, 2009 WRI World Congress
Keywords
Field
DocType
UHF antennas,biological effects of fields,biological tissues,conductors (electric),dipole antennas,electromagnetic fields,finite difference time-domain analysis,matrix algebra,mobile handsets,dipole antenna,electromagnetic field,finite-difference time-domain,frequency 1.8 MHz,frequency 900 MHz,heating effects,high-resolution human head model,human tissue,metal wall,mobile phone,perfect electric conductor,perfectly matched layer,simulated physical domain,specific absorption rate,unsplit-field FDTD simulation,Finite-Difference Time-Domain(FDTD),PML,SAR
Dipole antenna,Telecommunications,Computer science,Finite-difference time-domain method,Perfect conductor,Artificial intelligence,Human head,Perfectly matched layer,Computer vision,Specific absorption rate,Finite difference method,Acoustics,Electromagnetic field
Conference
Volume
ISBN
Citations 
1
978-0-7695-3507-4
0
PageRank 
References 
Authors
0.34
1
3
Name
Order
Citations
PageRank
Terapass Jariyanorawiss100.34
Nattaka Homsup200.68
Wiroj Homsup300.68