SAR mapping within the human eye due to portable transceivers

Author

Mokhtech, Kamel E. ; Delisle, Gilles Y. ; Roberge, Anee G.

Author_Institution

Dept. of Electr. Eng., Laval Univ., Que., Canada

fYear

1994

fDate

22-26 Aug 1994

Firstpage

26

Lastpage

30

Abstract

The electromagnetic field and induced specific absorption rate (SAR) within a detailed model of the human eye are calculated for different cellular telephony frequencies (840, 915, 1500 and 1800 MHz) at the ANSI uncontrolled environment exclusion distance of 25 mm and closer. The computations are performed with the finite-difference time domain method (FDTD) and the heating potential, derived from electric field values, is used to calculate the temperature distribution induced within the model. The computations are performed with the implicit alternating-direction (IAD) algorithm for the heat conduction equation. It is shown that, for short distances and for the higher frequencies of interest, substantial temperature elevation can occur close to the center of the eyeball

Keywords

ANSI standards; biological effects of fields; biological effects of microwaves; biothermics; cellular radio; eye; finite difference time-domain analysis; health hazards; physiological models; radiotelephony; transceivers; 1500 MHz; 1800 MHz; 25 mm; 840 MHz; 915 MHz; ANSI uncontrolled environment exclusion distance; FDTD; SAR mapping; UHF; alternating-direction algorithm; cellular telephony frequencies; electric field values; electromagnetic field; eyeball; finite-difference time domain method; heat conduction equation; heating potential; human eye; induced specific absorption rate; portable transceivers; short distances; temperature distribution; temperature elevation; Distributed computing; Electromagnetic fields; Electromagnetic modeling; Finite difference methods; Frequency; Humans; Specific absorption rate; Telephony; Time domain analysis; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 1994. Symposium Record. Compatibility in the Loop., IEEE International Symposium on

Conference_Location

Chicago, IL

Print_ISBN

0-7803-1398-4

Type

conf

DOI

10.1109/ISEMC.1994.385690

Filename

385690