Abstract：
:It was reported by others that hands-free accessories increase the absorption of RF energy in a human head compared to a handset alone. The results of this study show that the opposite is observed when proper dosimetric methods are employed. It is pointed out that for correct estimation of the exposure level it is necessary to use appropriate physical and experimental models and measurement instrumentation, following internationally recommended standards. The human phantoms used for measurements involving the hands-free accessories should include the torso; i.e., measurements should not be performed on the head phantom alone. This has a significant impact on the results because the RF energy coupled into the leads of hands-free accessories is strongly attenuated by the body. Numerical simulations using the Finite-Difference Time-Domain (FDTD) method and experimental measurements with a miniature electric-field probe are in good agreement and show a decrease, not an increase, in RF energy exposure in the human head from hands-free accessories.
journal_name
Radiat Resjournal_title
Radiation researchauthors
Bit-Babik G,Chou CK,Faraone A,Gessner A,Kanda M,Balzano Qdoi
10.1667/0033-7587(2003)159[0550:eotsit]2.0.co;2subject
Has Abstractpub_date
2003-04-01 00:00:00pages
550-7issue
4eissn
0033-7587issn
1938-5404journal_volume
159pub_type
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