Energy Deposition in Simulated Human Operators of 800-MHz Portable Transmitters
Quirino Balzano, Oscar Garay, Francis R. Steel · 1978
Different antenna designs on 800 MHz radios create distinct energy absorption patterns in human heads, including hot spots near the brain.
Plain English Summary
Researchers tested how much radiofrequency energy from 800 MHz portable radios gets absorbed into human tissue by measuring temperature changes in simulated human heads. They found that different antenna designs create 'hot spots' about one inch below the skull's surface, with some antennas exposing the eye area to higher energy levels than others.
Why This Matters
This 1978 study represents some of the earliest research into how portable radio transmitters deposit energy in human tissue, predating widespread cell phone use by decades. What makes this research particularly relevant today is that it identified localized 'hot spots' of energy absorption in brain tissue that weren't seen at lower frequencies. The science demonstrates that antenna design significantly affects where and how much RF energy gets absorbed by your head. While the researchers concluded that temperature increases were too small to cause thermal damage, this study helped establish the foundation for understanding specific absorption rates (SAR) that we still use to regulate wireless devices today. The reality is that modern smartphones operate at similar frequencies but with different power levels and usage patterns than these early portable radios.
Exposure Information
Specific exposure levels were not quantified in this study.
Show BibTeX
@article{energy_deposition_in_simulated_human_operators_of_800_mhz_portable_transmitters_g5298,
author = {Quirino Balzano and Oscar Garay and Francis R. Steel},
title = {Energy Deposition in Simulated Human Operators of 800-MHz Portable Transmitters},
year = {1978},
}