Experimental and numerical assessment of near-field exposure of a 60 GHZ communication antenna

We simulated the mm-wave exposure of a real 60 GHz communication module and validated it using near-field measurements in terms of the incident power density. Next, we numerically evaluated the absorbed power density in a layered tissue model using the finite-difference time-domain technique. The worst-case and realistic exposures were compared with the latest guidelines of the International Commission on Non-Ionizing Radiation Protection (ICNIRP) and of the Institute of Electrical and Electronics Engineers (IEEE). The worst-case exposure complied with the exposure guidelines for a distance larger than 14.5 mm. Realistic exposure is application dependent and exceeded the limits specified by exposure guidelines for data-intensive applications with duty cycle of 90% at distances smaller than 10.6 mm.