RF Exp calculation

FCC ID: PJMLRU3000

RF Exposure Info

Download: PDF

FCCID_2177350

RF exposure calculation
Regulation

Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is
not exposed to radio frequency energy levels in excess of the Commission's guidelines.

MPE calculation to FCC ID: PLMLRU3000 & IC no.: 6633A-LRU3000

These equations are generally accurate in the far field of an antenna but will over predict power density in the near
field, where they could be used for making a “worst case” prediction.

S = PG/4πR2

where S = power density ( in appropriate units, e.g. mW/cm2)
P = power input to the antenna (in appropriate units e.g. mW)
G = power gain of the antenna in the direction of interest relative to the isotropic radiator
R = distance to the center of radiation of the antenna (appropriate units e.g. cm)

Or

S = EIRP/(4πR2)

where EIRP = equivalent isotropically radiated power

Calculation:
(Calculated for max. EIRP)
EIRP: 35.5 dBm = 3548.13 mW
calculated at distance of 23 cm (see User Manual):
power density = 3548.13 /(4*π*232) = 0.534 mW/ cm2

Limit:
0.61 mW/ cm2 is the reference level for general public exposure according to the
OET Bulletin 65, Edition 97-01 Table 1.

Document Created: 2013-10-29 13:28:12
Document Modified: 2013-10-29 13:28:12

© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC