Power Density Exposure Limit - Motorola PTP 300 Series User Manual

1.8.3 Power Density Exposure Limit

The applicable power density exposure limit from the documents referenced above is:
•
10 W/m
Peak power density in the far field of a radio frequency point source is calculated as follows:
P .
=
S
π
4
Rearranging terms to solve for distance yields:
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for RF energy in the 2.4-, 5.2-, 5.4-, 5.8- and 5.9 GHz frequency bands.
Equation 1 - Peak power density in the far field
G
Where
2
d
S power density in W/m
P= Maximum Average transmit power capability of the radio, in
G= total Tx gain as a factor, converted from dB
d distance from point source, in m
P . G
=
d
π
4 . S
8
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