RF Exposure Report

FCC ID: 2AJK8-SWB1

RF Exposure Info

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FCCID_3453956

                          FCC ID: 2AJK8-SWB1

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
                                                                        2
  Range(MHz)         Strength(V/m)       Strength(A/m)    Density(mW/cm )
                        (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
                              2
Pd= Power density in mW/cm
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(20cm)
                              2
Pd the limit of MPE, 1mW/cm . If we know the maximum gain of the antenna and total power
input to the antenna, through the calculation, we will know the distance where the MPE limit is
reached.
mW=10^(dBm/10)


          11.2 Measurement Result
Operation Frequency: WIFI 802.11b/g/n HT20: 2412-2462MHz,
                               2
Power density limited: 1mW/ cm
Antenna Type: PCB Antenna
Antenna gain: 1.0dBi,
R=20cm
mW=10^(dBm/10)
802.11b/g/n:

                                                                                                                        Power
Channe                     conducted    conducted                        Max                Antenna     Evaluation
                                                      Tune-up                                                          density
l Freq.    modulation        power        power                     tune-up power            Gain         result
                                                    power (dBm)                                                         Limits
 (MHz)                       (mW)         (dBm)                         (dBm)               Numeric     (mW/cm2 )
                                                                                                                      (mW/cm2)

 2412       802.11b          12.88           11.1      11±1              12                  1.26        0.003969        1

 2437       802.11b          10.96           10.4      11±1              12                  1.26        0.003969        1

 2462       802.11b          10.96           10.4      11±1              12                  1.26        0.003969        1

 2412       802.11g          8.71            9.4       10±1              11                  1.26        0.003153        1

 2437       802.11g          9.12            9.6       10±1              11                  1.26        0.003153        1

 2462       802.11g          9.33            9.7       10±1              11                  1.26        0.003153        1
            802.11n
 2412                        8.51            9.3       10±1              11                  1.26        0.003153        1
              H20
            802.11n
 2437                        7.94            9.0       10±1              11                  1.26        0.003153        1
              H20
            802.11n
 2462                        7.94            9.0       10±1              11                  1.26        0.003153        1
              H20




emission

                      Power density Limits                                                            Power density
                                                              Calculate Evaluation result
                         (mW/cm2 )                                                                       Limits
                                                                     (mW/cm2 )
                             WIFI                                                                      (mW/cm2)

                           0.003969                                   0.003969                              1



Conclusion:
For the max result : 0.003969≤ 1.0 for 1g SAR, No SAR is required.




Signature:                                                                                  Date: 2016-7-4


NAME AND TITLE (Please print or type): Jason Chen/Manager
COMPANY (Please print or type): Shenzhen NTEK Testing Technology Co., Ltd./ 1/F, Building E,
Fenda Science Park, Sanwei Community, Xixiang Street Bao’an District, Shenzhen P.R. China.



Document Created: 2017-07-04 09:16:19
Document Modified: 2017-07-04 09:16:19

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