MPE_Calculation_BEJTLVLM3IU-N_FCC

FCC ID: BEJTLVLM3IU-N

RF Exposure Info

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FCCID_4192956

                                                                                                                                      FCC ID: BEJTLVLM3IU-N

                                                    MPE Calculation : 2.4GHz WiFi
                                                              Max. Target                                                                         Maximum power
                                  Frequency range                                   ANT Gain           Maximum EIRP           Maximum EIRP                        Requriment
    RF function or Mode                                          Power                                                                               density
                                            (MHz)                                     (dBi)                (dBm)                  (mW)                            (mW/cm2)
                                                                 (dBm)                                                                              (mW/cm2)
          802.11b             2412.00        ~      2462.00      18.50                1.97                  20.47                111.430             0.0222         1.000
          802.11g             2412.00        ~      2462.00      15.50                1.97                  17.47                 55.848             0.0112         1.000
       802.11n(HT20)          2412.00        ~      2462.00      15.00                1.97                  16.97                 49.774              0.010         1.000
                                             ~
                                             ~
                                             ~
                                             ~
                                             ~
The EUT will only be used with a separation of 20 centimeters or greater between the antenna and the body of the user.
The MPE sample calculation for this exposure is shown below.
                                 ▪S=          EIRP / ( 4 R2 π )                                       - Note
                                   =             111.43 / ( 4 X 202 X π )                             S= Maximum power density(mW/cm2)
                                        =        0.0222 mW/cm2                                        EIRP= Equivalent Isotropic Radiated Power(mW)
                                                                                                      R= Distance to the center of the radiation of the antenn
                              ▪ Limits for Maximum Permissible Exposure (MPE)
                                                              Electric Field      Magnetic field
                                  Frequency range                                                      Power Density          Averageing time
                                                                strength            strength                        2
                                            (MHz)                                                        (mW/cm )                (minutes)
                                                                 (V/m)                (A/m)
                                 0.3         ~        1.34                 614                 1.63                 *100                     30
                                1.34         ~        30                 824/f            2.19 / f             *180 / f2                     30
                                 30          ~        300                  27.5               0.073                     0.2                  30
                                 300         ~       1,500                                                      f / 1500                     30

                                1,500        ~      100,000                                                             1.0                  30



              Conclusion : The exposure condition of this device is compliant with FCC


                                                                                                                                   FCC ID: BEJTLVLM3IU-N

                                                MPE Calculation : LTE, WCDMA, GSM
                                                           Tune-up Max             Measured                               Adjusted EIRP to    Maximum power
                                  Frequency range                                                     Maximum EIRP                                                 Requriment
    RF function or Mode                                     Conducted             Conducted                                   tune-up            density
                                        (MHz)                                                             (dBm)                                                    (mW/cm2)
                                                           power(dBm)            power(dBm)                                  Max(dBm)           (mW/cm2)
        LTE(Band 2)           1850.00     ~     1910.00         23.00                22.19                20.02               20.830             0.0241              1.000
        LTE(Band 4)           1710.00     ~     1755.00         23.00                22.45                21.00               21.550             0.0285              1.000
        LTE(Band 5)            824.00     ~     849.00          23.00                22.14                20.06               20.920             0.0246              0.549
      LTE(Band 12,17)          699.00     ~     716.00          23.00                21.92                18.18               19.260             0.0168              0.466
        LTE(Band 13)           777.00     ~     787.00          23.00                21.91                17.24               18.330             0.0136              0.518
       WCDMA(850)              826.40     ~     846.60          24.00                22.75                19.66               20.910             0.0246              0.550
       WCDMA(1700)            1712.40     ~     1752.60         24.00                23.46                19.87               20.410             0.0219              1.000
       WCDMA(1900)            1852.40     ~     1907.60         24.00                21.67                20.76               23.090             0.0406              1.000
         GSM(850)              824.20     ~     848.80          33.00                31.83                28.71               29.880             0.1936              0.549
         GSM(1900)            1850.20     ~     1909.80         31.00                29.87                24.34               25.470             0.0702              1.000
The EUT will only be used with a separation of 20 centimeters or greater between the antenna and the body of the user.
The MPE sample calculation for this exposure is shown below.
                                 ▪S=      EIRP / ( 4 R2 π )                                          - Note
                                   =          20.83 / ( 4 X 202 X π )                                S= Maximum power density(mW/cm2)
                                   =         0.0241 mW/cm2                                           EIRP= Equivalent Isotropic Radiated Power(mW)
                                                                                                     R= Distance to the center of the radiation of the antenna(2


                              ▪ Limits for Maximum Permissible Exposure (MPE)

                                                           Electric Field        Magnetic field
                                  Frequency range                                                     Power Density       Averageing time
                                                               strength            strength
                                        (MHz)                                                           (mW/cm2)             (minutes)
                                                                (V/m)                (A/m)
                                 0.3      ~       1.34                    614                 1.63                *100                   30
                                                                                                                      2
                                1.34      ~       30                    824/f            2.19 / f             *180 / f                   30
                                 30       ~       300                     27.5               0.073                  0.2                  30

                                 300      ~      1,500                                                         f / 1500                  30

                                1,500     ~     100,000                                                             1.0                  30



              Conclusion : The exposure condition of this device is compliant with FCC


                                                                                                             FCC ID: BEJTLVLM3IU-N



                RF Exposure Compliance for simultaneous operations

 ▪ Configurations for simultaneous operations
    - Configuration 1:       2.4 GHz WiFi + (LTE or WCDMA or GSM)




    Note: Above configuration was declared from applicant.




 ▪ Configurations for simultaneous operation
       RF function or mode           2.4GHz WiFi                          LTE                        GSM

               Band                     2.4GHz          Band 4       Band 12(17)   Band13    850            1900

          Power Density
                                        0.0222          0.0285          0.0168     0.0136   0.1936         0.0702
            (mW/cm2)
                                                                                                                    Σ of MPE ratios
           Requirement
                                        1.0000          1.0000          0.4660     0.5180   0.5490         1.0000
            (mW/cm2)

            MPE ratio
                                        0.0222          0.0285          0.0361     0.0263   0.3526         0.0702
  (Power Density/Requirement)

                                        0.0222          0.0285                                                          0.0507

                                        0.0222                          0.0361                                          0.0583

   Configuration 1 (MPE ratio)          0.0222                                     0.0263                               0.0485

                                        0.0222                                              0.3526                      0.3748

                                        0.0222                                                             0.0702       0.0924

Note: The maximum power density in each RF function was used for above table.




         ▪ Requirment = Σ of MPE ratios ≤ 1


              Conclusion : The exposure condition of this device is compliant with FCC



Document Created: 2019-02-27 20:52:14
Document Modified: 2019-02-27 20:52:14

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