Numerical Modeling of Electromagnetic Field Exposure From 5g Mobile Communications at 10 GHZ

Abstract

Study on the interactions between electromagnetic fields and biological tissue at high frequency band is an important aspect in the area of wireless communications. The use of millimeter wave frequency band for fifth Generation (5G) devises involves new challenges in terms of Radio Frequency Electromagnetic Field Exposure (RF-EMF) limits and compliance assessment since the basic restrictions for limiting human exposure change from the Specific Absorption Rate (SAR) to the power density. The Electromagnetic Field Exposure to the human head has been studied based on power density by means of numerical simulation for the frequency band of 10 GHz. Study on radio frequency energy absorption has been done based on radiation from a printed monopole antenna at frequency of 10 GHz, transmitting directly towards the human head tissue model. Human head model is constructed from magnetic resonance images with frequency dependent tissue electrical properties. It is shown that at millimeter wave frequency, i.e., 10 GHz, with realistic source (20 mW) and head-source separation distance (10 mm), the amount of power density is in the range of regulatory limits and requirements on EMF exposure. The obtained results might provide valuable information for the design of 5G handheld devices and EMF compliance assessment.

Magnetite Particle Presence in the Human Brain: A Computational Dosimetric Study to Emphasize the Need of a Complete Assessment of the Electromagnetic Power Deposition at 3.5 GHz

“…The thermal effects represent the basis of the human protection standards metrics and safety limits [18,19], while the nonthermal are still under debate and study [20][21][22]. On the other hand, radiofrequency and microwave numerical dosimetry is continuously following the development and the popularity of emitting technologies [23][24][25][26][27][28][29][30]. Computational dosimetry using pure dielectric head models started more than 20 years ago and developed progressively using more and more accurate head models [31][32][33][34][35][36][37][38][39][40].…”