TITLE:
The Effect of Packaging Shape on the Distribution of Electric and Magnetic Fields and SAR Induced in 3D Models of Water Containers
AUTHORS:
Maher A. A. Abdelsamie, Russly B. Abdul Rahman, Shuhaimi Mustafa, Dzulkifly Hashim
KEYWORDS:
SAR, EM Simulation, Shape Effect, FDTD, FEM
JOURNAL NAME:
Journal of Electromagnetic Analysis and Applications,
Vol.6 No.9,
August
22,
2014
ABSTRACT: In this study,
two software packages using different numerical techniques—FEKO 6.3 with Finite-Element
Method (FEM) and XFDTD 7 with Finite Difference Time Domain Method (FDTD)—were used
to assess exposure of 3D models of square-, rectangular-, spherical- and pyramidal-shaped
water containers to electromagnetic waves at 300, 900, and 2400 MHz frequencies.
Using the FEM simulation technique, the peak electric field of 25, 4.5, 3, and 2
V/m at 300 MHz and 15.75, 1.5, 1.8 and 1.75 V/m at 900 MHz were observed in pyramidal-,
rectangular-, spherical-, and squareshaped 3D container
models, respectively. The FDTD simulation method confirmed a peak electric field
of 12.782, 10.907, 0.81867 and 10.625 V/m at 2400 MHz in the pyramidal-, square-,
spherical-, and rectangular-shaped 3D models, respectively. The study demonstrated
an exceptionally high level of electric field in the water in the two identical
pyramid-shaped 3D models analyzed using the two different simulation techniques.
Both FEM and FDTD simulation techniques indicated variations in the distribution
of electric, magnetic fields, and specific absorption rate of water stored inside
the 3D container models. The study successfully demonstrated that shape and dimensions
of 3D models significantly influence the electric and magnetic fields inside packaged
materials; thus, specific absorption rates in the stored water vary according to
the shape and dimensions of the packaging materials.