March 2015
Intermediate to advanced
476 pages
22h 5m
English
Content preview from Electromagnetic Fields in Biology and Medicine
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74 Electromagnetic Fields in Biology and Medicine
(near eld) and attenuation due to the skin effect. This, as a phenomenon, is conrmed by any model
studies—with no regard to their accuracy. Thus, the role of the HF eld may be limited only to areas
close to a device radiation system (antenna + counterpoise).
Two additional comments can be added to conclude the discussion of this phenomenon:
1. The casing of a device plays the role of the counterpoise, which is sufcient at frequencies
above 500 MHz. At lower frequencies, the role of the counterpoise is partly played by a
body of an operator as well. It results in a hand and/or mouth HF cu
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