mpe

FCC ID: 2AOK9-MIDRIVED06

RF Exposure Info

Download: PDF

FCCID_4252303

$FCC ID : 2AOK9-MIDRIVED06 RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) Radiation as specified in §1.1307(b) Limits for Maximum Permissible Exposure (MPE) Frequency Electric Field Magnetic Field Power Average Time Range(MHz) Strength(V/m) Strength(A/m) Density(mW/cm2) (A) Limits for Occupational/Control Exposures 300-1500 -- -- F/300 6 1500-100000 -- -- 5 6 (B) Limits for General Population/Uncontrol Exposures 300-1500 -- -- F/1500 6 1500-100000 -- -- 1 30 11.1 Friis transmission formula: Pd= (Pout*G)\ (4*pi*R2) Where Pd= Power density in mW/cm2 Pout=output power to antenna in mW G= Numeric gain of the antenna relative to isotropic antenna Pi=3.1416$

R= distance between observation point and center of the radiator in cm
Pd the limit of MPE, 1mW/cm2,If we know the maximum gain of the nd total power input to the antenna, through the calculation, we
will know the distance where the MPE limit is reached.

11.2 Measurement Result

Wifi 2.4G（MAX power）
Antenna gain: 1.62 dBi

Channel Measured Max tune-up Antenna Evaluation Power density
Tune-up power
modulation Freq. power power Gain result Limits
(dBm)
(MHz) (dBm) (dBm) Numeric (mW/cm2 ) (mW/cm2 )
2412 11.38 10 to 12 12 1.45 0.00457 1
11b 2437 12.77 11 to 13 13 1.45 0.00576 1
2462 13.57 12 to 14 14 1.45 0.00725 1
2412 10.01 9 to 11 11 1.45 0.00363 1
11g 2437 11.39 10 to 12 12 1.45 0.00457 1
2462 11.80 10 to 12 12 1.45 0.00457 1
2412 9.69 8 to 10 10 1.45 0.00288 1
11n
2437 10.98 9 to 11 11 1.45 0.00363 1
(HT20)
2462 11.48 10 to 12 12 1.45 0.00457 1
2422 11.38 10 to 12 12 1.45 0.00457 1
802.11n
2437 12.77 11 to 13 13 1.45 0.00576 1
(HT40)
2452 13.57 12 to 14 14 1.45 0.00725 1

Document Created: 2019-04-19 10:50:32
Document Modified: 2019-04-19 10:50:32