Quantifying SAR Induced by Smartphone Operation on Biological Models: A Comparison Between Two Simulation Programs.

The constant and enormous growth in the use of smartphones in wireless communication has exacerbated and generated understandable concern for human health and related health risks. The main parameter capable of defining the quantity of energy emitted by the source, and how much of it affects people, is the specific absorption rate. It is also useful for evaluating aspects relating to the safety of the devices themselves. In this context, two numerical methods, namely finite-difference time-domain using the C language, and the second, identified as a finite integration technique method through CST Studio Suite are used to compute the specific absorption rate. Both methods proposed follow a similar procedure, the initial step involves the development of a planar inverted-F antenna, the choice falls on a 1.8 GHz. Subsequently, consists in testing, trough simulations aimed to test the antenna’s performance on different human body models woman and child. For both models, three body parts have been chosen to interact with the antenna: ear, mouth and chest, and at three distances: 1 mm, 16 mm, 50 mm. The goal is to evaluate the energy absorbed by the human body. Furthermore, the study analyzes the Specific absorption rate averaged at 1 g and 10 g which allowed us to evaluate the absorption rate that goes from the most superficial to the deepest layers of the human body, in order to obtain a more complete overview of exposure to the electromagnetic waves. For both methods, the result, demonstrates precision, accuracy, and similarity, reinforcing the reliability of the finding.