Near‐Field Exposure in FM Frequencies: New Methodology and Estimation Formulas

Workers inside transmission pylons with FM antenna arrays are likely to be exposed to near‐field radiation exceeding reference levels for occupational exposure. In this study, the near‐field behavior of 64 FM pylons was studied using a new methodology. Near‐field characterization was done using fiel...

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Bibliographic Details
Published in:Bioelectromagnetics 2022-04, Vol.43 (3), p.182-192
Main Authors: Fetouri, Bader Mustafa, Azzi, Soumaya, Ouberehil, Allal, Briend, Philippe, De Doncker, Philippe, Wiart, Joe
Format: Article
Language:English
Subjects:
Antenna arrays
Electric field strength
Electromagnetic Fields - adverse effects
Engineering Sciences
Exposure
FDTD
FM pylons
Humans
near‐field
Occupational exposure
Occupational Exposure - adverse effects
Occupational health
Phantoms, Imaging
Pylons
Radiation
Radiation Dosage
SAR
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Summary:Workers inside transmission pylons with FM antenna arrays are likely to be exposed to near‐field radiation exceeding reference levels for occupational exposure. In this study, the near‐field behavior of 64 FM pylons was studied using a new methodology. Near‐field characterization was done using field metrics without taking into account field sources' size or distance from field source. The specific absorption rate (SAR) was assessed in five hundred different near‐field cases using a human phantom. Estimation formulas for both local and whole‐body SAR are provided and validated numerically. Local and whole‐body SAR are linked to electric field strength. © 2022 Bioelectromagnetics Society.
ISSN:0197-8462
1521-186X
DOI:10.1002/bem.22391