Human exposure assessment in indoor environments using a 60 GHz personal exposure meter

Autor: Reza Aminzadeh, Fall, Abdou Khadir, Sol, Jerome, Arno Thielens, Besnier, Philippe, Zhadobov, Maxim, Nele De Geeter, Parappurath Vasudevan, Prakash, Luc Dupre, Roel Van Holen, Luc Martens, Wout Joseph
Přispěvatelé: Universiteit Gent = Ghent University (UGENT), Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Berkeley Wireless Research Center [Berkeley] (BWRC), University of California [Berkeley] (UC Berkeley), University of California (UC)-University of California (UC), Universiteit Gent = Ghent University [Belgium] (UGENT), Nantes Université (NU)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), University of California [Berkeley], University of California-University of California, Université de Nantes (UN)-Université de Rennes 1 (UR1)
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Proceedings of the Joint Annual Meeting of the Bioelectromagnetics Society and the European BioElectromagnetics Association
Ghent University Academic Bibliography
BioEM2018 Joint Meeting of The Bioelectromagnetics Society (BEMS)
BioEM2018 Joint Meeting of The Bioelectromagnetics Society (BEMS), Jun 2018, Portoroz, Slovenia
Popis: International audience; SHORT ABSTRACT This paper presents the first mm-wave personal exposure meter (mm-PEM) to assess human exposure to the 5th generation of mobile networks (5G) in indoor environments. The mm-PEM consists of 9 elements of an antenna array and is calibrated on a skin-equivalent phantom in a reverberation chamber at 60 GHz. The designed mm-PEM has a response of 1.043 (0.17 dB) at 60 GHz which is very close to the desired response of a PEM i.e. 1 (0 dB). The mm-PEM measured an incident power density of 41 mW.m-2 at 60 GHz for an input power of 1 mW in the empty chamber. INTRODUCTION The rapid progress in 60-GHz wireless technologies and the availability of the 5th generation of mobile networks (5G) in the near future [1] has raised concerns regarding the potential adverse health effects of mm-waves on human body. The absorption of mm-waves is limited to skin tissues [1]. Therefore, the incident power density (IPD) is studied as a dosimetric quantity. The safety limits of IPD are 1 mW.cm-2 and 5 mW.cm-2 averaged over 20 cm 2 of the exposed area for general public and occupational exposure, respectively [2]. Human exposure to radiofrequency (RF) electromagnetic fields is usually measured by Personal Exposimeters (PEMs) [3, 4]. These are portable devices worn on body allowing for continuous measurement of the electric fields strength in several frequency bands for which protocols have been developed [5]. PEMs are calibrated in free space while used on body. In other words, the measured values are compromised by the presence of the human body and thus have large measurement uncertainties [6]. In order to reduce this measurement uncertainty, personal distributed exposimeters (PDE) with multiple antennas can be used for single [7] and multi telecommunication bands [8]. Research shows that people spend more than 80% of their times indoors [9]. This could increase human exposure the electromagnetic fields. The total power in an indoor environment consists of specular and diffuse multipath components. The former and the latter are due to the reflections from large surfaces and presence of objects in a room, respectively. The DMC can contribute up to 95% to the total power density in an indoor environment [10].
Databáze: OpenAIRE
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