By James C. Lin (auth.), James C. Lin (eds.)
This is the 3rd quantity within the sequence, within which the subject of the consequences of radio frequencies on human tissue, now more and more a priority with the superiority of mobile phones, is explored through Prof. Lin and different researchers. The effect of electromagnetics on imaging and cardiology, either very prepared parts of analysis at this time, can be explored.
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Extra info for Advances in Electromagnetic Fields in Living Systems
Both near-zone reactive and far-zone radiative interactions are important for wireless RF personal telecommunication systems. Specifically, in the far zone, Coupling is characterized by plane wave RF field interaction, Electric and magnetic fields are uniquely defined and are related through the intrinsic impedance of the medium, Determination of electric field behavior is sufficient to characterize the interaction, Coupling of RF power from air into planar tissue ranges from about 20 to 60% for the wireless frequencies, The interaction is independent of the source configuration in the far zone, Enhanced coupling can occur at greater depth in bodies with curved surfaces, RF energy is resonantly absorbed by the head at 400 to 1500 MHz.
RF power coupling from air into planar tissue ranges from 20 to 60% for the wireless frequencies. However, enhanced coupling can occur at greater depth in bodies with curved surfaces. In fact, RF energy is resonantly absorbed by the head at 400 to 1500 MHz and SAR peaks or hot spots may occur near the center of the head. The interaction of RF energy with biological systems depends on electric field polarization for elongated bodies whose height-to-width ratio is large. It is significant to observe that the integrated SAR or total absorption in the head is similar for a homogeneous or inhomogeneous model.
R, 1978, Energy deposition in simulated human operators of 800 MHz portable transmitters, IEEE Trans. Vehicular Tech. 27:174-181. , Garay, O. , 1995, Electromagnetic energy exposure of simulated users of portable cellular telephones, IEEE Trans. Vehicular Tech. 44:390-403. Y. , 1994, Current and SAR induced in an human head model by the electromagnetic field irradiated from a cellular telephone, IEEE Trans Microwave Theory Tech. 42:2249-2254. , Jr. and Athey, T. , 1989, Specific absorption rate (SAR) in models of the human head exposed to hand-held UHF portable radios, Bioelectromagnetics 10: 173-186.