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.
ASJC Scopus subject areas
- Electrical and Electronic Engineering
Ball, A. D., Evans, N. E., Burgess, S. J., & Scanlon, W. (2007). Head-SAR dependence on spectacle frame shape for operator of 450 MHz personal radio. Electronics Letters, 43 (20)(20), 1063-1065. https://doi.org/10.1049/el:20071497