MPE Calculation

FCC ID: PY319200447

RF Exposure Info

Download: PDF
FCCID_4485629

                                                           RF Exposure Report

                       Report No.: SA190516E01A

                            FCC ID: PY319200447

                       Test Model: CAX80

                 Received Date: July 05, 2019

                         Test Date: July 09, 2019

                     Issued Date: Oct. 14, 2019


                         Applicant: NETGEAR, Inc.

                          Address: 350 East Plumeria Drive San Jose, CA 95134



                        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 TAF or any government agencies.
Report No.: SA190516E01A                                             Page No. 1 / 7                                             Report Format Version: 6.1.1
Reference No.: 190808E06


                                                                   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.: SA190516E01A                                             Page No. 2 / 7                                              Report Format Version: 6.1.1
Reference No.: 190808E06


                                          Release Control Record


Issue No.             Description                                         Date Issued
SA190516E01A          Original release.                                   Oct. 14, 2019




Report No.: SA190516E01A                     Page No. 3 / 7        Report Format Version: 6.1.1
Reference No.: 190808E06


1    Certificate of Conformity


            Product: Nighthawk AX8 AX6000 WiFi Cable Modem Router

              Brand: NETGEAR

        Test Model: CAX80

    Sample Status: ENGINEERING SAMPLE

          Applicant: NETGEAR, Inc.

          Test Date: July 09, 2019

         Standards: FCC Part 2 (Section 2.1091)

                           KDB 447498 D01 General RF Exposure Guidance v06

                           IEEE C95.3 -2002



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:      Oct. 14, 2019
                                  Wendy Wu / Specialist




     Approved by :                                               ,   Date:      Oct. 14, 2019
                                   May Chen / Manager




Report No.: SA190516E01A                        Page No. 4 / 7                       Report Format Version: 6.1.1
Reference No.: 190808E06


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 32cm away from the body of the user.
         So, this device is classified as Mobile Device.




Report No.: SA190516E01A                           Page No. 5 / 7                       Report Format Version: 6.1.1
Reference No.: 190808E06


                                                                                                              C
                                                                                                             Eooert
                                                                                                             venitas




24     Antenna Gain


     Frequt(agiiyz)Range       Dwecuonal(dAé]it)enna s              Antenna Type          Antenna Connector

        2.4~2.4835                        5.97
         5.15~5.25                        5.91
         5.25~5.35                        6.34                          PIFA                   ipex(MHF)
        5.47~5.725                        6.05
       5.725~5.85                       6.13
 Note: More detailed information, please refer to opearating description.


 Frequency Range           Antenna Net Gain
      (GHz)                      (dBi)               Antenna Type        Connector Type      |Cable Length (mm)


      5.15~5.85
       s19%:                  (RX167
                                  only)                   PCB               ipex(MHF)
                                                                               P                       260




Report No.: SA190516E01A                         Page No. 6 /7                            Report Format Version: 6.1.1
Reference No.: 190808E06


2.5    Calculation Result of Maximum Conducted Power

For 2.4GHz, 5GHz (U-NII-1, U-NII-3) data was copied from the original test report (Report No.:
SA190516E01)
                 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           2437       995.416            5.97           32           0.30584               1

 WLAN U-NII-1          5230       980.958            5.91           32           0.29726               1

WLAN U-NII-2A          5310       243.146            6.34           32           0.08135               1

WLAN U-NII-2C          5670       249.113            6.05           32           0.07796               1

 WLAN U-NII-3          5825       995.687            6.13           32           0.31740               1

NOTE:
2.4GHz: The directional gain = 5.97dBi
5GHz:
U-NII-1: The directional gain = 5.91dBi
U-NII-2A: The directional gain = 6.34dBi
U-NII-2C: The directional gain = 6.05dBi
U-NII-3: The directional gain = 6.13dBi
The Max. Power = Max. tune up power including tolerance.


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 = 0.30584 / 1 + 0.31740 / 1 = 0.62324
Therefore the maximum calculations of above situations are less than the “1” limit.



--- END ---




Report No.: SA190516E01A                      Page No. 7 / 7                         Report Format Version: 6.1.1
Reference No.: 190808E06



Document Created: 2019-10-24 18:42:21
Document Modified: 2019-10-24 18:42:21

© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC