Limitations in the SAR Use
Tóm tắt
The paper discusses several aspects of the practical application of the SAR. It is shown that the unit is an ideal solution for basic research and laboratory experiments. SAR is directly nonmeasurable unit. Although methods and devices based upon indirect SAR measurements may widen our knowledge about EM energy distribution and absorption within a body. It is shown that for practical applications the temperature SAR measurement methods are not sensitive enough while methods based upon E(H) measurement are less accurate than traditional approaches. As a result of assumption SAR = 4 W/kg as a basic restriction the present protection standards are illogical and nonrealiazable. A return to traditional units (E, H, S) in the standards and surveying metrology is suggested.
Tài liệu tham khảo
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Trzaska, H.: 2002, “Keep out of the Western Protection Standards,” Proc. 3-rd Intl. Symp. on EMC, Beijing, pp. 35–38.
NCRP Report No. 67, Radiofrequency Electromagnetic Fields. Properties, Quantities and Units, Biophysical Interaction, and Measurements. 1981, Wash. DC.