Title :
Head-SAR dependence on spectacle frame shape for operator of 450MHz personal radio
Author :
Ball, A.D. ; Evans, N.E. ; Scanlon, W.G. ; Burgess, S.J.
Author_Institution :
Univ. of Ulster, Newtownabbey
Abstract :
Power deposition in the head of a user wearing metal-framed spectacles was calculated with a 450 MHz personal radio transmitting in close proximity. Peak tissue SAR in the head depended on lens shape-whether circular half-rim or rectangular-with 70 and 174% increases, respectively, compared to the spectacle-free case. However, localised screening occurred with square frames, with a 40% reduction of peak SAR in the eye closest to the antenna.
Keywords :
biological effects of microwaves; biological tissues; mobile radio; ophthalmic lenses; phantoms; frequency 450 MHz; head-specific absorption rate dependency; metal-framed spectacles; peak tissue SAR value; personal radio; power deposition; rectangular frame spectacle; semicircular frame spectacle; spectacle frame shape; spectacle-free phantoms;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20071497
