NDLI: Energy deposition in biological tissue near portable radio transmitters at VHF and UHF

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Volume 27 - 1977

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Energy deposition in biological tissue near portable radio transmitters at VHF and UHF

Content Provider	IEEE Xplore Digital Library
Author	Balzano, Q. Garay, O. Steel, R.F.
Copyright Year	1977
Description	Author affiliation: Motorola, Inc., Fort Lauderdale, Florida (Balzano, Q.)
Abstract	This paper presents the results of measurements of temperature increase, due to RF energy deposition, in simulated biological tissue near 6 W portable transmitters with helical and whip antennas. At close distances (< .5'') VHF helices deposit energy in the surface fatty layers, with practically no penetration into muscle tissue; 450 MHz helical antennas transfer energy mostly into the surface fat, with the penetration into deep tissue increasing by a factor of 10 from 150 MHz. UHF quarter-wavelength whips deposit power mostly in the muscle tissue. At larger distances (> 2''), the detected temperature increases are extremely small, indicating that portable radios are safe.
Starting Page	25
Ending Page	39
File Size	744777
Page Count	15
File Format	PDF
DOI	10.1109/VTC.1977.1622417
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1977-03-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Biological tissues Radio transmitters Temperature measurement Helical antennas Muscles Antenna measurements Energy measurement UHF measurements Radio frequency Biological system modeling
Content Type	Text
Resource Type	Article

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