RF EXPO INFO

FCC ID:

RF Exposure Info

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Maximum Permissible Exposure

FCC ID: 2AJXQ00E05317EF0A


Applicable Standard
Systems operating under the provisions of this section shall be operated in a manner that ensures
that the public is not exposed to radio frequency energy level in excess limit for maximum
permissible exposure. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this
device has been defined as a mobile device whereby a distance of 0.2m normally can be
maintained between the user and the device.
(a) Limits for Occupational / Controlled Exposure
                       Electric Field   Magnetic Field                        Averaging Times
 Frequency Range                                            Power Density           2       2
                       Strength (E)      Strength (H)                         ︱E︱ , ︱H︱
      (MHz)                                                 (S) (mW/cm2)
                          (V/m)             (A/m)                             or S (minutes)
       0.3-3.0              614               1.63              (100)*                6
       3.0-30             1842/f             4.89/f            (900/f)*               6
       30-300              61.4              0.163                1.0                 6
     300-1500                                                   F/300                 6
   1500-100000                                                     5                  6
(b) Limits for General Population / Uncontrolled Exposure
                       Electric Field   Magnetic Field                        Averaging Times
 Frequency Range                                            Power Density           2       2
                       Strength (E)      Strength (H)                         ︱E︱ , ︱H︱
      (MHz)                                                 (S) (mW/cm2)
                          (V/m)             (A/m)                             or S (minutes)
      0.3-1.34              614               1.63              (100)*               30
      1.34-30              824/f             2.19/f            (180/f)*              30
       30-300              27.5              0.073                0.2                30
     300-1500                                                   F/1500               30
   1500-100000                                                    1.0                30
Note: f=frequency in MHz; *Plane-wave equivalent power density

MPE Calculation Method
E (V/m) = (30*P*G) 0.5/d            Power Density: Pd (W/m2) = E2/377
E = Electric Field (V/m)
P = Peak RF output Power (W)
G = EUT Antenna numeric gain (numeric)
d = Separation distance between radiator and human body (m)
The formula can be changed to
Pd = (30*P*G) / (377*d2)
From the peak EUT RF output power, the minimum mobile separation distance, d=0.2m, as well
as the gain of the used antenna, the RF power density can be obtained.


Calculated Result and Limit

Antenna Gain: 2.0dBi for each one
Assembly Antenna Gain: 5.01dBi


   Antenna                                   Power Density   Limit of Power
               Peak Output     Peak Output                                      Test
    Gain                                         (S)           Density (S)
               Power (dBm)     Power (mW)                                      Result
  (Numeric)                                    (mW/cm2)        (mW/cm2)
    3.17          25.35              342.8       0.22              1          Compiles


Note: the worse case was recorded.



Document Created: 2019-09-02 13:44:16
Document Modified: 2019-09-02 13:44:16

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