RF Exposure Info.pdf

FCC ID: PY312200202

RF Exposure Info

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FCCID_1733507

                                     RF EXPOSURE REPORT


                                         REPORT NO.: SA120524E01

                                          MODEL NO.: WNDAP620

                                                    FCC ID: PY312200202

                                             RECEIVED: May 24, 2012

                                                  TESTED: May 31 to June 01, 2012

                                                   ISSUED: June 20, 2012



                                           APPLICANT: Netgear Incorporated.

                                              ADDRESS: 350 East Plumeria Drive San Jose
                                                       California United States 95134



                                             ISSUED BY: Bureau Veritas Consumer Products Services
                                                        (H.K.) Ltd., Taoyuan Branch Hsin Chu Laboratory

                                     LAB ADDRESS: No. 81-1, Lu Liao Keng, 9th Ling,Wu Lung Tsuen,
                                                  Chiung Lin Hsiang, Hsin Chu Hsien 307, Taiwan,
                                                  R.O.C.

  This report should not be used by the client to claim
  product certification, approval, or endorsement by any
  government agencies.




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

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                                   TABLE OF CONTENTS
RELEASE CONTROL RECORD ..................................................................................... 3
1. CERTIFICATION ...................................................................................................... 4
2. RF EXPOSURE LIMIT.............................................................................................. 5
3. MPE CALCULATION FORMULA ............................................................................. 5
4. CLASSIFICATION .................................................................................................... 5
5. ANTENNA GAIN....................................................................................................... 6
6. CALCULATION RESULT OF MAXIMUM CONDUCTED POWER ........................... 7




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                            RELEASE CONTROL RECORD

 ISSUE NO.                REASON FOR CHANGE                DATE ISSUED
 SA120524E01              Original release                 June 20, 2012




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1. CERTIFICATION

                                 ProSafe 3x3 Single Radio, Dual Band Wireless-N
              PRODUCT:
                                 Access Point

         BRAND NAME:             Netgear

            MODEL NO.:           WNDAP620

        TEST SAMPLE:             ENGINEERING SAMPLE

            APPLICANT:           Netgear Incorporated.
                 TESTED:         May 31 to June 01, 2012

           STANDARDS:            FCC Part 2 (Section 2.1091)

                                 FCC OET Bulletin 65, Supplement C (01-01)

                                 IEEE C95.1


The above equipment (Model: WNDAP620) 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:   June 20, 2012
                                ( Lori Chung, Specialist )


 APPROVED BY              :                                  ,   DATE:   June 20, 2012
                              ( May Chen, Deputy Manager )




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2. RF EXPOSURE LIMIT

LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE)
   FREQUENCY              ELECTRIC FIELD MAGNETIC FIELD POWER DENSITY     AVERAGE TIME
   RANGE (MHz)            STRENGTH (V/m) STRENGTH (A/m)   (mW/cm2)          (minutes)
                LIMITS FOR GENERAL POPULATION / UNCONTROLLED EXPOSURE
     300-1500                  …               …           F/1500                  30
   1500-100,000                …               …             1.0                   30

F = Frequency in MHz


3. MPE CALCULATION FORMULA
Pd = (Pout*G) / (4*pi*r2)
where
Pd = power density in mW/cm2
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


4. 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.




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5. ANTENNA GAIN
  The antennas provided to the EUT, please refer to the following table:
     Internal Antenna (For 2.4GHz / 5GHz)
                                                                   Peak Gain (dBi)
      Transmitter         Antenna
        Circuit            Type            2.4GHz                   5GHz Band 1                    5GHz Band 4
       Chain (0)       Dipole                   2.3                         5.9                        5.3
       Chain (1)       Dipole                   2.3                         5.9                        4.9
       Chain (2)       Dipole                   2.3                          5                         5.2
      External Antenna (For 2.4GHz)
                                       Gain (dBi)                             Net Gain (dBi)
                           Antenna                             Cable Loss                             Connecter
           Model                      (Exclude cable                              (Include cable
                            Type                                 (dB)                                   Type
                                          loss )                                      loss)
                                                                                                      SMA Plug
        ANT-32405           Dipole          5                     3.68                1.32
                                                                                                      Reverse




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6. CALCULATION RESULT OF MAXIMUM CONDUCTED POWER

 For 15.247(2.4GHz):

 802.11b:
 FREQUENCY                           ANTENNA                             POWER
                    MAX POWER                            DISTANCE                              LIMIT
    BAND                               GAIN                              DENSITY
                       (mW)                                 (cm)                             (mW/cm2)
    (MHz)                              (dBi)                            (mW/ cm2)
   2412-2462              163.681        7.07               20           0.16585                 1.00
Directional gain = gain of antenna element + 10 log (# of TX antenna elements)
Effective Legacy Gain (dBi) = 7.07
The effective legacy gain is 7.07 dBi, therefore the limit needs to reduce.


 802.11g:
 FREQUENCY                           ANTENNA                             POWER
                    MAX POWER                            DISTANCE                              LIMIT
    BAND                               GAIN                              DENSITY
                       (mW)                                 (cm)                             (mW/cm2)
    (MHz)                              (dBi)                            (mW/ cm2)
   2412-2462              587.684        7.07               20           0.59549                 1.00
Directional gain = gain of antenna element + 10 log (# of TX antenna elements)
Effective Legacy Gain (dBi) = 7.07
The effective legacy gain is 7.07 dBi, therefore the limit needs to reduce.


 802.11n(20MHz):
 FREQUENCY                           ANTENNA                             POWER
                    MAX POWER                            DISTANCE                              LIMIT
    BAND                               GAIN                              DENSITY
                       (mW)                                 (cm)                             (mW/cm2)
    (MHz)                              (dBi)                            (mW/ cm2)
   2412-2462              450.335        2.3                20           0.15215                 1.00


 802.11n(40MHz):
 FREQUENCY                           ANTENNA                             POWER
                    MAX POWER                            DISTANCE                              LIMIT
    BAND                               GAIN                              DENSITY
                       (mW)                                 (cm)                             (mW/cm2)
    (MHz)                              (dBi)                            (mW/ cm2)
   2422-2452              384.450        2.3                20           0.12989                 1.00




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 For 15.247(5GHz):

 802.11a:
 FREQUENCY                              ANTENNA                                POWER
                    MAX POWER                                     DISTANCE                        LIMIT
    BAND                                  GAIN                                 DENSITY
                       (mW)                                          (cm)                       (mW/cm2)
    (MHz)                                 (dBi)                               (mW/ cm2)
  5745 ~ 5825             100.739              9.91                  20        0.19630              1.00
                               G1/20   G2/20          G3/20 2
Directional gain = 10 log[(10     + 10     + 10     ) / 3]
Effective Legacy Gain (dBi) = 9.91
The effective legacy gain is 9.91 dBi, therefore the limit needs to reduce.

 802.11n(20MHz):
 FREQUENCY                              ANTENNA                                POWER
                    MAX POWER                                     DISTANCE                        LIMIT
    BAND                                  GAIN                                 DENSITY
                       (mW)                                          (cm)                       (mW/cm2)
    (MHz)                                 (dBi)                               (mW/ cm2)
  5745 ~ 5825             102.721              5.30                  20        0.06924              1.00


 802.11n(40MHz):
 FREQUENCY                              ANTENNA                                POWER
                    MAX POWER                                     DISTANCE                        LIMIT
    BAND                                  GAIN                                 DENSITY
                       (mW)                                          (cm)                       (mW/cm2)
    (MHz)                                 (dBi)                               (mW/ cm2)
  5755 ~ 5795             92.000               5.30                  20        0.06202              1.00




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For 15.407(5GHz):
802.11a:
 FREQUENCY                             ANTENNA                                  POWER
                    MAX POWER                                    DISTANCE                          LIMIT
    BAND                                 GAIN                                   DENSITY
                       (mW)                                         (cm)                         (mW/cm2)
    (MHz)                                (dBi)                                 (mW/ cm2)
  5180 ~ 5240             14.556          10.38                     20          0.03161              1.00
                              G1/20   G2/20          G3/20 2
Directional gain = 10 log[(10    + 10      + 10     ) / 3]
Effective Legacy Gain (dBi) = 10.38
The effective legacy gain is 10.38 dBi, therefore the limit needs to reduce.

802.11n(20MHz):
 FREQUENCY                             ANTENNA                                  POWER
                    MAX POWER                                    DISTANCE                          LIMIT
    BAND                                 GAIN                                   DENSITY
                       (mW)                                         (cm)                         (mW/cm2)
    (MHz)                                (dBi)                                 (mW/ cm2)
  5180 ~ 5240             37.716              5.90                  20          0.02919              1.00


802.11n(40MHz):
 FREQUENCY                             ANTENNA                                  POWER
                    MAX POWER                                    DISTANCE                          LIMIT
    BAND                                 GAIN                                   DENSITY
                       (mW)                                         (cm)                         (mW/cm2)
    (MHz)                                (dBi)                                 (mW/ cm2)
  5190 ~ 5230             45.508              5.90                  20          0.03522              1.00



 --- END ---
CONCLUSION:
Both of the 2.4GHz and 5GHz can transmit simultaneously, the formula of calculated
the MPE is:


CPD1 / LPD1 + CPD2 / LPD2 + ……etc. < 1
CPD = Calculation power density
LPD = Limit of power density


Therefore, the worst-case situation is 0.441 / 1 + 0.441 / 1 = 0.882, which is less than
“1”. This confirmed that the device comply with FCC 1.1310 MPE limit.




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Document Created: 2012-06-20 11:03:42
Document Modified: 2012-06-20 11:03:42

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