RF Exposure Info

FCC ID: 2ALBDPT40

RF Exposure Info

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FCCID_4175339

                                          MPE CALCULATION (FCC ID: 2ALBDPT40)


RF Exposure Requirements:                                                     47 CFR §1.1307(b)

RF Radiation Exposure Limits:                                                 47 CFR §1.1310

RF Radiation Exposure Guidelines:                                             FCC OST/OET Bulletin Number 65

EUT Frequency Band:                                                           BLE: 2402-2480MHz
                                                                              LTE Cat-M1 Band 2: 1850.7-1909.3MHz
                                                                              LTE Cat-M1 Band 4: 1710.7-1754.3MHz
                                                                              LTE Cat-M1 Band 5: 824.7-836.5MHz
                                                                              LTE Cat-M1 Band 12: 699.7-715.3MHz
                                                                              LTE Cat-M1 Band 13: 777.7-786.3MHz


Limits for General Population/Uncontrolled Exposure in the band of:           300 - 1500 MHz,
Power Density Limit:                                                          f/1500 mW/cm2




Limits for General Population/Uncontrolled Exposure in the band of:           1500 - 100,000 MHz
Power Density Limit:                                                          1 mW / cm2




Equation:          S = PG / 4R2 or R = √PG / 4S
        Where,     S = Power Density
                   P = Power Input to Antenna
                   G = Antenna Gain
                   R = distance to the center of radiated antenna
____________________________________________________________________________________________________________
Prediction distance 20 cm


EUT: Telematics Device


                                                                            Max Tune
                                  Conducted                     Tune up                 Separation     Power
                  Frequency                      Antenna                    up output                                MPE Limit
     Radio                         Output                      tolerance                 distance     Density
                    (MHz)                        Gain (dBi)                  power                                  (mW/ cm2)
                                 Power (dBm)                      (dB)                     (cm)      (mW/ cm2)
                                                                             (dBm)
       BLE        2402-2480           3.99          5.3             ±0.5       4.49         20        0.0019            1
    LTE Band2    1850.7-1909.3        23.50          0               ±1       24.50         20        0.0561            1
    LTE Band4    1710.7-1754.3        23.30          0               ±1       24.50         20        0.0561            1
    LTE Band5     824.7-836.5         24.09          0               ±1       25.09         20        0.0642          0.550
   LTE Band12     699.7-715.3         24.50          0               ±1       25.50         20        0.0706          0.466
   LTE Band13     777.7-786.3         24.43          0               ±1       25.43         20        0.0695          0.518



The above results show that the device complies with the MPE requirement.


The BLE is able to transmit simultaneously with LTE.
The ratio = 0.0019/1 + 0.0706/0.466 = 0.153 < 1.0
The above results show that the device complies with the simultaneous transmission MPE requirement.




Completed By: David Zhang
Vista Laboratories, Inc.
1261 Puerta Del Sol, San Clemente, CA 92673
Date: Feb 13th, 2019



Document Created: 2019-02-13 09:18:59
Document Modified: 2019-02-13 09:18:59

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