Exposure of Insects to RadioFrequency Electromagnetic Fields from 2 to 120GHz
Arno Thielens1,2, Duncan Bell3, David B. Mortimore4, Mark K. Greco5, Luc Martens1 & Wout Joseph1
Published online in Nature, 2 March 2018
Insects are continually exposed to Radio-Frequency (RF) electromagnetic felds at diferent frequencies. The range of frequencies used for wireless telecommunication systems will increase in the near future from below 6GHz (2G, 3G, 4G, and WiFi) to frequencies up to 120GHz (5G). This paper is the frst to report the absorbed RF electromagnetic power in four diferent types of insects as a function of frequency from 2GHz to 120GHz. A set of insect models was obtained using novel Micro-CT (computer tomography) imaging. These models were used for the frst time in fnite-diference time-domain electromagnetic simulations. All insects showed a dependence of the absorbed power on the frequency. All insects showed a general increase in absorbed RF power at and above 6GHz, in comparison to the absorbed RF power below 6GHz. Our simulations showed that a shift of 10% of the incident power density to frequencies above 6GHz would lead to an increase in absorbed power between 3–370%.