Application of the finite differences method (FDTD)

for the modeling of SAR in biological tissues


S. Kassimi1, S. Bri2*, M. Habibi1, A. Mamouni3

1 Laboratory Systems and Telecommunications Engineering Decision, Faculty des Sciences de Kenitra - Morocco

2 Microwaves and Materials Group, ESTM, B.P. 3103, 50000, Moulay Ismail University, Meknès – Morocco

3 MITEC Group, Institute of Electronics, the Microelectronics and Nanotechnology, UMR CNRS 8520 IEMN, Cité Scientifique, Avenue Poincaré - B.P. 60069 59652, Villeneuve d’Ascq, Lille- France.

* Corresponding author: E-mail:

     Received: 21 March 2011; revised version accepted: 30 June 2011



     In this paper, we present the modeling results of electromagnetic fields in medium with dielectric properties (permittivity and conductivity) similar to biological tissues, by developing a computer code by Finite Differences Method (FDTD). These simulations allowed the deduction of specific absorption rate (SAR) as the quantity absorbed by the human head near a mobile phone for two frequencies GSM 900 MHz and 1800 MHz.


Keywords: FDTD; SAR; Electromagnetic field; Dielectric medium; Free medium.

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