RF Exposure Info (MPE) rev

FCC ID: I88EMG3435Q20B

RF Exposure Info

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FCCID_4235990

                                                           RF Exposure Report

                       Report No.: SA181219E02

                            FCC ID: I88EMG3435Q20B

                       Test Model: EMG3435-Q20A

                   Series Model: SoMA5200

                 Received Date: Dec. 19, 2018

                         Test Date: Jan. 22, 2019

                     Issued Date: Mar. 12, 2019


                         Applicant: Zyxel Communications Corporation

                          Address: No.2 Industry East RD. IX, Hsinchu Science Park, Hsinchu 30075, Taiwan


                        Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch
                                   Hsin Chu Laboratory
                    Lab Address: E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300,
                                 Taiwan R.O.C.
            Test Location: E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300,
                           Taiwan R.O.C.
       FCC Registration /
                           723255 / TW2022
      Designation Number:




This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted
only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this
report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product
unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you
provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided,
however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time
shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific
mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. The report
must not be used by the client to claim product certification, approval, or endorsement by any government agencies.
Report No.: SA181219E02                                              Page No. 1 / 7                                             Report Format Version: 6.1.1


                                                                   Table of Contents
Release Control Record .................................................................................................................................. 3
1         Certificate of Conformity ...................................................................................................................... 4
2         RF Exposure .......................................................................................................................................... 5
    2.1      Limits for Maximum Permissible Exposure (MPE) .............................................................................. 5
    2.2      MPE Calculation Formula ................................................................................................................... 5
    2.3      Classification ....................................................................................................................................... 5
    2.4      Antenna Gain ...................................................................................................................................... 6
    2.5      Calculation Result of Maximum Conducted Power ............................................................................. 7




Report No.: SA181219E02                                              Page No. 2 / 7                                              Report Format Version: 6.1.1


                                          Release Control Record


Issue No.             Description                                         Date Issued
SA181219E02           Original release.                                   Mar. 12, 2019




Report No.: SA181219E02                      Page No. 3 / 7        Report Format Version: 6.1.1


1    Certificate of Conformity


            Product: Dual-Band Wireless AC2600 Gigabit Ethernet Gateway

              Brand: ZYXEL

        Test Model: EMG3435-Q20A

      Series Model: SoMA5200

    Sample Status: ENGINEERING SAMPLE

          Applicant: Zyxel Communications Corporation

          Test Date: Jan. 22, 2019

         Standards: FCC Part 2 (Section 2.1091)

                          KDB 447498 D01 General RF Exposure Guidance v06



The above equipment has been tested by Bureau Veritas Consumer Products Services (H.K.) Ltd.,
Taoyuan Branch, and found compliance with the requirement of the above standards. The test record, data
evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts
of the measurements of the sample’s EMC characteristics under the conditions specified in this report.




      Prepared by :                                             ,   Date:          Mar. 12, 2019
                                Claire Kuan / Specialist




     Approved by :                                              ,   Date:          Mar. 12, 2019
                                 May Chen / Manager




Report No.: SA181219E02                        Page No. 4 / 7                        Report Format Version: 6.1.1


2      RF Exposure

2.1     Limits for Maximum Permissible Exposure (MPE)

    Frequency Range          Electric Field     Magnetic Field       Power Density      Average Time
         (MHz)              Strength (V/m)      Strength (A/m)         (mW/cm2)           (minutes)
                             Limits For General Population / Uncontrolled Exposure
        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



2.2     MPE Calculation Formula

Pd = (Pout*G) / (4*pi*r2)
where
Pd = power density in mW/cm 2
Pout = output power to antenna in mW
G = gain of antenna in linear scale
Pi = 3.1416
R = distance between observation point and center of the radiator in cm



2.3     Classification

The antenna of this product, under normal use condition, is at least 41cm away from the body of the user. So,
this device is classified as Mobile Device.




Report No.: SA181219E02                          Page No. 5 / 7                      Report Format Version: 6.1.1


2.4       Antenna Gain


                                                      Antenna Net   Frequency
Antenna                                                                                           Connector
             Chain No.    Brand       Model              Gain          range     Antenna type
  No.                                                                                               Type
                                                         (dBi)         (GHz)
              Chain 0                                      3.5      2.4~2.4835
      1                   WHA YU   C107-511211-A           6.0      5.15~5.25
              Chain 3
                                                           5.3      5.725~5.85
              Chain 1                                      3.5      2.4~2.4835
      2                   WHA YU   C107-511211-A           6.0      5.15~5.25
              Chain 2
                                                           5.3      5.725~5.85
                                                                                    Dipole          N type
              Chain 2                                      3.5      2.4~2.4835
      3                   WHA YU   C107-511211-A           6.0      5.15~5.25
              Chain 1
                                                           5.3      5.725~5.85
              Chain 3                                      3.5      2.4~2.4835
      4                   WHA YU   C107-511211-A           6.0      5.15~5.25
              Chain 0
                                                           5.3      5.725~5.85




Report No.: SA181219E02                       Page No. 6 / 7                         Report Format Version: 6.1.1


2.5    Calculation Result of Maximum Conducted Power


                   Evaluation
  Operation                       Max Power    Antenna Gain      Distance   Power Density       Limit
                   Frequency
   Mode                             (mW)           (dBi)           (cm)       (mW/cm2)        (mW/cm2)
                     (MHz)
WLAN 2.4GHz           2437         628.549           9.52          41         0.26642               1
 WLAN 5GHz
                    5240           244.893          12.02          41         0.18459               1
   (U-NII-1)
 WLAN 5GHz
                    5785           985.078          11.32          41         0.63196               1
   (U-NII-3)
Note:
2.4GHz: Directional gain = 3.5dBi + 10log(4) = 9.52dBi
5GHz(U-NII-1): Directional gain = 6.0dBi + 10log(4) = 12.02dBi
5GHz(U-NII-3): Directional gain = 5.3dBi + 10log(4) = 11.32dBi




Conclusion:
The formula of calculated the MPE is:
CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1
CPD = Calculation power density
LPD = Limit of power density


WLAN 2.4GHz + WLAN 5GHz = 0.26642 / 1 + 0.63196 / 1 = 0.89838
Therefore the maximum calculations of above situations are less than the “1” limit.



--- END ---




Report No.: SA181219E02                       Page No. 7 / 7                      Report Format Version: 6.1.1



Document Created: 2019-04-11 22:09:54
Document Modified: 2019-04-11 22:09:54

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