RF Exposure

FCC ID: A2HAV62981HB

RF Exposure Info

Download: PDF
FCCID_3824927

                               RF Exposure evaluation


According to 447498       D01 General RF Exposure Guidance v05
The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at
test separation distances ≤ 50 mm are determined by:
[(max. power of channel, including tune-up tolerance, mW)/(min. test
separation distance, mm)] ·[√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for
10-g extremity SAR, where
  f(GHz) is the RF channel transmit frequency in GHz
   Power and distance are rounded to the nearest mW and mm before
calculation
  The result is rounded to one decimal place for comparison



eirp = pt x gt = (EXd)2/30
where:
pt = transmitter output power in watts,
gt = numeric gain of the transmitting antenna (unitless),
E = electric field strength in V/m,         ---   10((dBuV/m)/20)/106
d = measurement distance in meters (m)---3m
So pt = (EXd)2/30 x gt


Ant gain 2dBi ;so Ant numeric gain=1.58


Field strength =97.78dBuV/m @3m
So Pt={ [10(97.78   /20)/106   x3]2/30x1.58 }x1000 mW =1.14mW


So (1.14mW/5mm)x √2.480 GHz =0.36< 3



Then SAR evaluation is not required



Document Created: 2018-04-22 11:01:37
Document Modified: 2018-04-22 11:01:37

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