User's Manual

RF EXPOSURE User Manual Content v1_3_wibas-connect+_evo-bs.docx Page 2/5
Radiation Exposure Assessment – Compliance Boundary Calculation
In order to calculate the RF exposure compliance boundary around a Radio Equipment and its antenna, a
theoretical approach is described below. As the installation environment could be complex, i.e obstacles
causing reflections or scattering, soil conditions etc., this approach may be used to provide a rough estimation
of the expected exposure in power flux density on a certain point. More precise estimations can be feasible if
detailed knowledge of the installation environment is available. In some cases a safety factor can be used to
increase the level of confidence.
The power flux density S can be calculated using the following formula:
S=P*G
num
/ (4*r
2
*π)
where,
 P is the maximum power at the antenna port of the Radio Equipment,
 G
num
is the numerical gain of the antenna,
 r is the distance between the antenna and the point of interest.