EMF measurement tasks and frequency selective evaluation methods for RF-communication facilities

In this paper we point out the most relevant content of the ICNIRP guidelines and derive from these standard EMF measurement tasks such as ´In Situ Measurements´, ´Compliance Assessment Measurements´ and ´RF-Monitoring´. Different requirements and background for these RF-field strength measurement tasks and their specific needs of technical equipment were discussed. Following that, we evaluate and compare up-to-date RF-measurement methods like field probes measurements or frequency selective methods using antennas. Here we consider point screening methods like the ´isotropic spatial averaging method´ and the currently most popular ´sweeping method´ for isotropic and frequency selective measurements as well as monitoring methods. Afterwards we focus on frequency selective, isotropic long-term EMF measurements performed with a ´field nose´ system in the frequency range from 80 MHz up to 2.5 GHz and present effective methods for data reduction of such long-term measurements.