Human Exposure to Electromagnetic Signals with Continuous Spectra

This paper is focused on the assessment of human exposure to electromagnetic signals with continuous spectra. A convenient and simple approach is proposed, to compare the measured field levels with the maximum exposure levels and verify compliance with the relevant regulations. In the presence of signals with continuous spectra, the proposed method yields more accurate results than the procedure outlined by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). In particular, the proposed approach is based on the classical signal theory and requires the integration in the spectral domain of the electric field amplitude, or of the square of the electric field amplitude. Illustrative computational examples are presented, dealing with human exposure to Universal Mobile Telecommunications System (UMTS), Long-Term Evolution (LTE), experimental 5G, and Ground Penetrating Radar (GPR) signals. All of these examples are based on real measured data.