Speaker
Description
The presentation will review the key principles of RF exposure assessment method for base stations specified in IEC 62232 international standard, and provide examples of implementation case studies detailed in IEC TR 62669. These methods, developed over the past 25 years, serve three complementary purposes.
Firstly, this consists of assessing the base station compliance distances in free space. This is generally performed for product type approval purposes. Secondly, RF exposure is assessed when the base station is installed on its operational site. All relevant sources and the potential impact of the nearby environment are included at this stage. It is also important to consider that the base station’s actual emissions are continuously varying in time and space due to traffic load and beamforming. The “actual maximum approach” describes how to proceed with the base station installation compliance assessment and how to leverage actual power or EIRP monitoring and control features during operation. Finally, in-situ measurement methods are provided, including the methods used to extrapolate the maximum exposure levels. All applicable measurement and calculation techniques are described in dedicated annexes.
