Preliminary study of electromagnetic energy absorption in the head due to the exposure of radio frequency at 900MHz

In this paper, the effects to Specific Absorption Rate (SAR) levels in human head proximity to metal-spectacle when using RF source investigated. The source is from a mobile communications enabled device (MCE) operating in GSM900. A homogenous SAM phantom head and hand model were used to understand the related mechanism with the representative sources of Planar Inverted F antenna (PIFA) at 900MHz. A PIFA inside mobile phone excited in front of the head-worn metallic spectacle. Previous studies have been conducted using dipole in the frontal face. However, human hand holding MCE in the frontal face has not been discussed. The Simulations showed high correlation between the metallic spectacles and powers absorbed in face. All simulations have been done using finite integration in time domain (FIT).