MPE

FCC ID: NDD9573260713

RF Exposure Info

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FCCID_815262

                                        Report No.: FR6N0104-01




        Appendix A. Maximum Permissible Exposure




FCC ID: NDD9573260713                    Page No.   : 1 of 3


                                                                                              Report No.: FR6N0104-01



1. Maximum Permissible Exposure
1.1. Applicable Standard

      Systems operating under the provisions of this section shall be operated in a manner that ensures that the
      public is not exposed to radio frequency energy levels in excess limit for maximum permissible exposure. In
      accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as a mobile
      device whereby a distance of 0.2 m normally can be maintained between the user and the device.
      (A) Limits for Occupational / Controlled Exposure
                                                                                                    Averaging Time
       Frequency Range         Electric Field        Magnetic Field        Power Density (S)
                                                                                                     |E|²,|H|² or S
            (MHz)            Strength (E) (V/m)    Strength (H) (A/m)         (mW/ cm²)
                                                                                                       (minutes)
             0.3-3.0                 614                   1.63                    (100)*                   6
             3.0-30                1842 / f               4.89 / f             (900 / f)*                   6
             30-300                 61.4                  0.163                      1.0                    6
            300-1500                                                                F/300                   6
         1500-100,000                                                                 5                     6
      (B) Limits for General Population / Uncontrolled Exposure
                                                                                                    Averaging Time
       Frequency Range         Electric Field        Magnetic Field        Power Density (S)
                                                                                                     |E|²,|H|² or S
            (MHz)            Strength (E) (V/m)    Strength (H) (A/m)         (mW/ cm²)
                                                                                                       (minutes)
            0.3-1.34                 614                   1.63                    (100)*                  30
             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
      Note: f = frequency in MHz ; *Plane-wave equivalent power density

1.2. MPE Calculation Method

                   30 × P × G                                                      E2
      E (V/m) =                                Power Density:        Pd (W/m²) =
                       d                                                           377
      E = Electric field (V/m)
      P = Peak RF output power (W)
      G = EUT Antenna numeric gain (numeric)
      d = Separation distance between radiator and human body (m)
      The formula can be changed to

      Pd =
             30 × P × G
              377 × d 2
      From the peak EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of
      the used antenna, the RF power density can be obtained.



FCC ID: NDD9573260713                                                                          Page No.   : 2 of 3


                                                                            Report No.: FR6N0104-01



1.3. Calculated Result and Limit

      Antenna Type : Dipole
      Max Conducted Power for IEEE 802.11b/g : 18.57dBm
                                                                            Limit of
                                  Peak Output                  Power
      Antenna Gain Antenna Gain               Peak Output                    Power
                                    Power                    Density (S)                 Test Result
          (dBi)     (numeric)                 Power ( mW )                 Density (S)
                                    (dBm)                    (mW/cm²)
                                                                           (mW/cm²)
             5          3.1623      18.5700      71.9449      0.045285         1         Complies




FCC ID: NDD9573260713                                                         Page No.   : 3 of 3



Document Created: 2007-07-10 19:35:22
Document Modified: 2007-07-10 19:35:22

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