RF Exposure evaluation

FCC ID: 2AQJK-AST-WR018-A

RF Exposure Info

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FCCID_3980370

                                                                               FCC ID: 2AQJK-AST-WR018-A


                                          RF Exposure Evaluation

1 Measuring Standard
KDB 680106 D01 RF Exposure Wireless Charging Apps v03


2 Requirements
According to the item 5 of KDB 680106 D01v03:
Inductive wireless power transfer applications that meet all of the following requirements are excluded from
submitting an RF exposure evaluation.
(1) Power transfer frequency is less than 1MHz.
(2) Output power from each primary coil is less than or equal to 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.
(4) Client device is placed directly in contact with the transmitter.
(5) Mobile exposure conditions only (portable exposure conditions are not covered by this exclusion).
(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.
Remark: Meet all the above requirements.


Limits
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)




Global United Technology Services Co., Ltd.
No. 301-309, 3/F., Jinyuan Business Building, No.2, Laodong Industrial Zone,
Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102
Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960                         Page 1 of 4


   GTS
3 Test Setup




4 Test Procedure
1) The RF exposure test was performed in anechoic chamber.
2) The measurement probe was placed at test distance (15 cm from all sides and 20 cm from the top) which is
between the edge of the charger and the geometric center of probe.
3) The highest emission level was recorded and compared with limit as soon as measurement of each points
(A, B, C, D, E) were completed.
4) The EUT was measured according to the dictates of KDB 680106 DO1v03.
Remark: The EUT‘s test position A, B, C, D and E is valid for the E and H field measurements.




Global United Technology Services Co., Ltd.
No. 301—309, 3/F., Jinyuan Business Building, No.2, Laodong Industrial Zone,
Xixiang Road, Bacan District, Shenzhen, Guangdong, China 518102
Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960                       Page 2 of 4


5 Test Instruments list
                                                                                   Cal.Date         Cal.Due date
   Test Equipment              Manufacturer      Model No.                SN.
                                                                                  (mm-dd-yy)         (mm-dd-yy)
Exposure Level Tester              Narda          ELT-400               N-0231   June 29 2017       June 28 2018
Electronic & Magnetic field
                                                                2
      probe 100cm
                  2                Narda      ELT probe 100cm           M0675    June 29 2017       June 28 2018



6 Test Result
E-Filed Strength at 15 cm from the edges surrounding the EUT (V/m)
Frequency Range                 Test             Test                 Test         Test               Limits
       (MHz)                  Position A      Position B            Position C   Position D           (V/m)
  0.1115-0.205                  1.35             1.37                 1.31         1.29                614


E-Filed Strength at 20 cm from the top of the EUT (V/m)
Frequency Range                  Test            Limits
       (MHz)                  Position E         (V/m)
  0.1115-0.205                   1.12             614


H-Filed Strength at 15 cm from the edges surrounding the EUT (A/m)
Frequency Range                 Test             Test                 Test         Test               Limits
       (MHz)                  Position A      Position B            Position C   Position D           (A/m)
  0.1115-0.205                  0.49             0.46                 0.41         0.45                1.63


H-Filed Strength at 20 cm from the top of the EUT (A/m)

Frequency Range                  Test            Limits
       (MHz)                  Position E         (A/m)

  0.1115-0.205                   0.37            1.63




Test Engineer:                                    Reviewer:

Date:June 27 2018                                 Date:June 27 2018




Global United Technology Services Co., Ltd.
No. 301-309, 3/F., Jinyuan Business Building, No.2, Laodong Industrial Zone,
Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102
Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960                           Page 3 of 4


7 Test Set-up Photo




Global United Technology Services Co., Ltd.
No. 301-309, 3/F., Jinyuan Business Building, No.2, Laodong Industrial Zone,
Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102
Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960                    Page 4 of 4



Document Created: 2018-08-27 16:45:35
Document Modified: 2018-08-27 16:45:35

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