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A multi-band body-worn distributed radio-frequency exposure meter: design, on-body calibration and study of body morphology

Aminzadeh, Reza and Thielens, Arno and Agneessens, Sam and Van Torre, Patrick and Van den Bossche, Matthias and Dongus, Stefan and Eeftens, Marloes and Huss, Anke and Vermeulen, Roel and de Seze, René and Mazet, Paul and Cardis, Elisabeth and Rogier, Hendrik and Röösli, Martin and Martens, Luc and Joseph, Wout. (2018) A multi-band body-worn distributed radio-frequency exposure meter: design, on-body calibration and study of body morphology. Sensors, 18 (1). e272.

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Abstract

A multi-band Body-Worn Distributed exposure Meter (BWDM) calibrated for simultaneous measurement of the incident power density in 11 telecommunication frequency bands, is proposed. The BDWM consists of 22 textile antennas integrated in a garment and is calibrated on six human subjects in an anechoic chamber to assess its measurement uncertainty in terms of 68% confidence interval of the on-body antenna aperture. It is shown that by using multiple antennas in each frequency band, the uncertainty of the BWDM is 22 dB improved with respect to single nodes on the front and back of the torso and variations are decreased to maximum 8.8 dB. Moreover, deploying single antennas for different body morphologies results in a variation up to 9.3 dB, which is reduced to 3.6 dB using multiple antennas for six subjects with various body mass index values. The designed BWDM, has an improved uncertainty of up to 9.6 dB in comparison to commercially available personal exposure meters calibrated on body. As an application, an average incident power density in the range of 26.7-90.8 μW·m - 2 is measured in Ghent, Belgium. The measurements show that commercial personal exposure meters underestimate the actual exposure by a factor of up to 20.6.
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Epidemiology and Public Health (EPH) > Environmental Exposures and Health > Physical Hazards and Health (Röösli)
UniBasel Contributors:Dongus, Stefan and Röösli, Martin and Eeftens, Marloes
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:MDPI
ISSN:1424-8220
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:18 May 2018 11:58
Deposited On:02 Feb 2018 14:05

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