RF exposure info (MPE)

FCC ID: I88WSQ20

RF Exposure Info

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FCCID_4148536

                                                           RF Exposure Report

                       Report No.: SA180821E03

                            FCC ID: I88WSQ20

                       Test Model: WSQ20

                 Received Date: Oct. 11, 2018

                         Test Date: Jan. 02 to 04, 2019

                     Issued Date: Jan. 15, 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.: SA180821E03                                              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.: SA180821E03                                              Page No. 2 / 7                                              Report Format Version: 6.1.1


                                          Release Control Record


Issue No.             Description                                         Date Issued
SA180821E03           Original release.                                   Jan. 15, 2019




Report No.: SA180821E03                      Page No. 3 / 7        Report Format Version: 6.1.1


1    Certificate of Conformity


            Product: Multy Mini Dual-Band WiFi System Add-on

              Brand: ZYXEL

        Test Model: WSQ20

    Sample Status: ENGINEERING SAMPLE

          Applicant: Zyxel Communications Corporation

          Test Date: Jan. 02 to 04, 2019

         Standards: FCC Part 2 (Section 2.1091)

                          KDB 447498 D01 General RF Exposure Guidance v06
                          IEEE C95.1-1992



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:       Jan. 15, 2019
                                 Wendy Wu / Specialist




     Approved by :                                              ,   Date:       Jan. 15, 2019
                                 May Chen / Manager




Report No.: SA180821E03                        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
                                                                                2
         (MHz)                Strength (V/m)      Strength (A/m)         (mW/cm )           (minutes)
                               Limits For General Population / Uncontrolled Exposure
        0.3-1.34                   614                  1.63               (100)*                30
                                                                                  2
         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
      1500-100,000                  …                    …                  1.0                  30

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



2.2      MPE Calculation Formula

                          2
Pd = (Pout*G) / (4*pi*r )
where
                                   2
Pd = power density in mW/cm
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 20cm away from the body of the user.
         So, this device is classified as Mobile Device.




Report No.: SA180821E03                            Page No. 5 / 7                       Report Format Version: 6.1.1


2.4    Antenna Gain


                                                For WLAN
                          Antenna Net Gain   Frequency range
      Chain No                                                     Antenna Type        Connector Type
                                (dBi)              (GHz)
           0                      0            2.4 ~ 2.4835            PIFA                  IPEX
           1                      0            2.4 ~ 2.4835            PIFA                  IPEX
           2                      0            2.4 ~ 2.4835            PIFA                  IPEX
                                  0             5.15 ~ 5.25
           0                                                          Dipole                 IPEX
                                  0            5.725 ~ 5.85
                                  0             5.15 ~ 5.25
           1                                                          Dipole                 IPEX
                                  0            5.725 ~ 5.85
                                  0             5.15 ~ 5.25
           2                                                           PIFA                  IPEX
                                 0.7           5.725 ~ 5.85
                                              For Bluetooth
       Antenna Net               Frequency range
                                                            Antenna Type           Connector Type
        Gain(dBi)                     (MHz)
           2.3                      2402~2480                   PIFA                      IPEX




Report No.: SA180821E03                      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                                                                   2                2
   Mode                              (mW)             (dBi)             (cm)            (mW/cm )        (mW/cm )
                     (MHz)
WLAN 2.4GHz           2412           960.188            4.77             20             0.57291               1

WLAN UNII-1           5200           947.747            4.77             20             0.56549               1

WLAN UNII-3           5745           992.446            5.01             20             0.62581               1

  Bluetooth           2480            0.885             2.30             20             0.00030               1

NOTE:
2.4GHz: Directional gain = 0dBi + 10log(3) = 4.77dBi
5GHz:
For UNII-1: Directional gain = 0dBi + 10log(3) = 4.77dBi
                                          G0/20     G1/20     G2/20 2
For UNII-3: Directional gain = 10 log[(10       + 10      + 10     ) / 3] = 5.01dBi


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 + Bluetooth = 0.57291 / 1 + 0.00030 / 1 = 0.57321
WLAN 5GHz + Bluetooth = 0.62581 / 1 + 0.00030 / 1 = 0.62611
Therefore the maximum calculations of above situations are less than the “1” limit.



--- END ---




Report No.: SA180821E03                          Page No. 7 / 7                             Report Format Version: 6.1.1



Document Created: 2019-03-25 14:00:09
Document Modified: 2019-03-25 14:00:09

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