RF Exposure

FCC ID: 2APMD-PA136A

RF Exposure Info

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 Bay Area Compliance Laboratories Corp. (Dongguan)                             Report No.: RDG181219003-00

FCC §1.1310, §2.1091- MAXIMUM PERMISSIBLE EXPOSURE (MPE)
Applicable Standard
According to subpart §1.1310, 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 of the
Commission’s guidelines.

Limits for Maximum Permissible Exposure (MPE) (§1.1310, §2.1091)

                         (B) Limits for General Population/Uncontrolled Exposure
Frequency Range        Electric Field       Magnetic Field        Power Density           Averaging Time
     (MHz)            Strength (V/m)        Strength (A/m)           (mW/cm2)               (minutes)
    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
    300–1500                 /                       /                  f/1500                  30
  1500–100,000               /                       /                   1.0                    30

f = frequency in MHz; * = Plane-wave equivalent power density;

According with KDB 680106 D01 RF Exposure Wireless Charging Apps v03 clause 3 c)




According to 680106 D01 RF Exposure Wireless Charging App v03 clause 5 b)




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 Bay Area Compliance Laboratories Corp. (Dongguan)                               Report No.: RDG181219003-00

Block Diagram of Test Setup




                                                      15cm




Note: 20 cm for Top test.


Test Equipment List and Details

                                                                        Serial     Calibration    Calibration
     Manufacturer               Description              Model
                                                                       Number         Date         Due Date
         Narda          Exposure Level Tester           ELT-400        N-0229       2017-11-15    2019-11-15
                                                       ELT Probe
         Narda                 B Field Probe                           M-0666       2017-11-15    2019-11-15
                                                        100cm2
       Amplifier
                            Isotropic Field Probe       FP5000         301825       2018-11-22    2021-11-22
       Research

    * Statement of Traceability: Bay Area Compliance Laboratories Corp. (Dongguan) attests that all calibrations
     have been performed, traceable to National Primary Standards and International System of Units (SI).


Test Data
     Environmental Conditions

             Temperature:                     24 oC
        Relative Humidity:                    40 %
            ATM Pressure:                 100.2 kPa

     * The testing was performed by Neil Liao on 2018-12-27.

Test mode: Transmitting




                                                                                                     Page 9 of 23


 Bay Area Compliance Laboratories Corp. (Dongguan)                                     Report No.: RDG181219003-00

H-field Strength
          Frequency      Position     Position     Position     Position      Position       50%       Limit
            Range           A            B            C            D             E          Limit       Test
            (kHz)         (A/m)        (A/m)        (A/m)        (A/m)         (A/m)        (A/m)      (A/m)

           110-205        0.190        0.191        0.196        0.189         0.190       0.815       1.63


Note: Test with 15cm distance from the center of the probe(s) to the edge of the device, 20 cm for top test.

E-field Strength
          Frequency      Position     Position     Position     Position      Position       50%       Limit
            Range           A            B            C            D             E          Limit       Test
            (kHz)         (V/m)        (V/m)        (V/m)        (V/m)         (V/m)        (V/m)      (V/m)

           110-205        4.136        4.23         4.05         4.215         2.983        307         614


Note: Test with 15cm distance from the center of the probe(s) to the edge of the device, 20 cm for top test.

Result: Compliance

Considerations of compliance 680106 D01 RF Exposure Wireless Charging App v03 clause 5 b:

(1) Power transfer frequency is less than 1 MHz.

Yes, the operation frequency is 110-205 kHz.

(2) Output power from each primary coil is less than or equal to 15 watts.

Yes, the maximum output power of primary coil is 10 Watts, less than 15 watts.

(3) The transfer system includes only single primary and secondary coils. This includes charging systems
that may have multiple primary coils and clients that are able to detect and allow coupling only between
individual pairs of coils.

The transfer system includes only single primary coils to detect and allow coupling only between
individual pairs of coils.

(4) Client device is placed directly in contact with the transmitter.

Yes, client device is placed directly in contact with the transmitter

(5) Mobile exposure conditions only (portable exposure conditions are not covered by this exclusion).

Yes, mobile exposure conditions only

 (6) The aggregate H-field strengths at 15 cm surrounding the device and 20 cm above the top surface from
all simultaneous transmitting coils are demonstrated to be less than 50% of the MPE limit.

Yes, the test result for H and E-field strength less than 50% of the MPE limit.




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Document Created: 2019-03-29 06:36:00
Document Modified: 2019-03-29 06:36:00

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