Electromagnetic Field Exposure Assessment in a Multi Source Telecommunication Environment Application to Nonoccupational Exposure in Public Spaces

摘要

RF-EMF exposure assessment carried out in an observatory open for general public visits, where there are multiple RF sources in the surrounding area. Fields at some points of interest have exceeded the ICNIRP exposure limits for the general public and, to comply with normative limits, relevant stations reduced their radiated power. Nevertheless, the total electric field strength in the vicinity of the observatory's metallic parapet still exceeds exposure limits due to re-radiation. Thus, the main broadcast stations reduced even more their transmitted power to comply with the regulatory limits throughout the observatory area. A detailed evaluation is carried out close to metallic objects to assess the re-radiation phenomenon. Additionally, laboratory experiments were carried out to confirm the influence of re-radiation from the metallic parapet.