Evaluation of Electromagnetic Absorption in Human Head from Mobile Phones

Due to the rapid growth in the use of wireless communication systems, there has been a recent increase in public concern regarding the exposure of humans to Radio Frequency (RF) electromagnetic radiation.This is particularly evident in the case of mobile phone handsets.The scientists found some evidence of increase in glioma and acoustic neuroma brain cancer for mobile phone users.Mobile phone is operating at high frequencies to transmit and receive signals.With a distance of within 1cm from a user"s head, mobile phones can radiate radio frequency (RF) signals.Radiation from cell phone is defined by its Specific Absorption Rate (SAR) value.In India, SAR limit for cell phones is 1.6W/Kg.which is actually for 6 minutes per day use.In this paper, we calculated transmitted power from mobile phone with spectrum analyzer and also evaluated absorption of Electromagnetic Radiation from Mobile Phones by outer layers (skin and bone) of human head.