Measurement and Analysis of the Radio-Frequency Electromagnetic Environment in Downtown Areas of Beijing

摘要

Public exposure to electromagnetic fields in the environment has been steadily increasing as the development and application of various wireless technologies, especially the coming of the 5G era. The growing concern about the possible consequent health risks prompts many organizations to conduct relevant studies and set limits to the exposure levels. The spatial distributions of the electromagnetic environment become very important data. The aim of this paper is to investigate the radio-frequency electromagnetic environment in Beijing by measuring the electromagnetic field levels of three representative downtown areas from 10 MHz to 8.0 GHz. The spatial distributions of the electromagnetic field in measured areas are illustrated as two-dimensional maps through interpolation techniques. These results are analyzed with reference to the exposure level limits in China and the official annual report of the national radiation environment.