SAR Analysis of Human Head Model Using Common Antennas of 4G LTE Mobile Communications

This paper presents an analysis of the unsafe impact of electromagnetic radiation transmitted from cell phones. Subsequently, the propensity for long-time encounters from portable radiation to non-ionic electromagnetic radiation is expanding. The Specific Absorption Rate (SAR) estimation for 4G Long-Term Evolution (LTE) networks using (Band 3) spectrum of 1800 MHz is necessary to ensure the user's safety protocol. It demonstrates the collaboration between EM radiation and organic tissue. In this research work, SAR estimation of the human head model is estimated by utilizing three basic mobile antennas capable of operating at (Band 3) spectrum, for example, Monopole Antenna, Microstrip Patch Antenna, and Planar Inverted F-Antenna. SAR is estimated over both 10 gram and 1gram body tissue for every antenna at 1800 MHz frequency. Results obtained show that the utilization of the microstrip antenna is the most secure among the three antennae with SAR estimation of 0.1005 W/kg and 0.1415 W/kg for both 10 gram and 1 gram of body tissue separately. Although the large size of the microstrip patch antenna and poor radiation efficiency is not very much suitable in 4G LTE mobile communication. But the lowest SAR value, return loss, Voltage Standing Wave Ratio (VSWR), and highest antenna directivity of the microstrip patch antenna provide an upper edge in choosing a suitable antenna for 4G LTE mobile communication.