Limitations in the SAR Use |
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Authors: | Hubert Trzaska |
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Institution: | (1) EM Environment Protection Lab., Techn. Univ. of Wroclaw, Poland, Wyspianskiego 27, 50-370 Wroclaw, Poland |
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Abstract: | Summary 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. |
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Keywords: | SAR electromagnetic field measurements EMC exposure limits |
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