PubMed · 8541466
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P May, J Sinkkonen, H Tiitinen. 1995-09-11. Reply--dipole problems.. https://doi.org/10.1097/00001756-199509000-00003
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The article contains analysis of national standards determining maximal allowable levels of electromagnetic exposure in some developed countries. The point of specific interest is the levels in frequency range of 300 MHz-30 GHz, as this range is widely used in most apparatus for mobile communication. Different in various countries, values of the maximal allowable levels appear to be the most strict in Russia. Incomplete knowledge of long-standing exposure to mild electromagnetic fields requires through medical and technical research to determine limits of safe application of mobile communication devices.
Measurements of PC electromagnetic irradiation show that the main sources are PC blocks emitting the waves of certain frequencies. Use of wide-range detectors measuring field intensity in assessment of PC electromagnetic irradiation gives unreliable results. More precise measurements by selective devices are required. Thus, it is expedient to introduce a term "spectral density of field intensity" and its maximal allowable level. In this case a frequency spectrum of PC electromagnetic irradiation is divided into 4 ranges, one of which is subjected to calculation of field intensity for each harmonic frequency, and others undergo assessment of spectral density of field intensity.