MPE (802.11n)

FCC ID: NDD9564751027

RF Exposure Info

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FCCID_1479402

F FCC TEST REPORT Report No. : FR0D2828AI Appendix A. Maximum Permissible Exposure Page No. : A1 of A4 FCC ID : NDD9564751027

F FCC TEST REPORT Report No. : FR0D2828AI 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. Page No. : A2 of A4 FCC ID : NDD9564751027

F FCC TEST REPORT Report No. : FR0D2828AI 1.3. Calculated Result and Limit Antenna Type : Dipole Antenna Max Conducted Power for IEEE 802.11n (20MHz) port A: 18.87dBm Test Min. User Conducted Conducted Power Density Gain (dBi) Numeric Gain Mode Distance (cm) Power (dBm) Power (mW) (mW/cm2) 5G 20 3 1.584893 18.87 77.0903 0.0306 Max Conducted Power for IEEE 802.11n (20MHz) port B: 14.85dBm Test Min. User Conducted Conducted Power Density Gain (dBi) Numeric Gain Mode Distance (cm) Power (dBm) Power (mW) (mW/cm2) 5G 20 3 1.584893 14.85 30.5492 0.0121 IEEE 802.11n (20MHz) port A + port B Power Density = 0.0306 + 0.0121 = 0.0427 (mW/cm2) Max Conducted Power for IEEE 802.11n (40MHz) port A: 17.98dBm Test Min. User Conducted Conducted Power Density Gain (dBi) Numeric Gain Mode Distance (cm) Power (dBm) Power (mW) (mW/cm2) 5G 20 3 1.584893 17.98 62.8058 0.0249 Max Conducted Power for IEEE 802.11n (40MHz) port B: 14.28dBm Test Min. User Conducted Conducted Power Density Gain (dBi) Numeric Gain Mode Distance (cm) Power (dBm) Power (mW) (mW/cm2) 5G 20 3 1.584893 14.28 26.7917 0.0106 IEEE 802.11n (40MHz) port A + port B Power Density = 0.0249 + 0.0106 = 0.0355 (mW/cm2) Page No. : A3 of A4 FCC ID : NDD9564751027

F FCC TEST REPORT Report No. : FR0D2828AI Max Conducted Power for IEEE 802.11n (20MHz) port A: 19.78dBm Test Min. User Conducted Conducted Power Density Gain (dBi) Numeric Gain Mode Distance (cm) Power (dBm) Power (mW) (mW/cm2) 2.4G 20 3 1.584893 19.78 95.0605 0.0378 Max Conducted Power for IEEE 802.11n (20MHz) port B: 16.78dBm Test Min. User Conducted Conducted Power Density Gain (dBi) Numeric Gain Mode Distance (cm) Power (dBm) Power (mW) (mW/cm2) 2.4G 20 3 1.584893 16.78 47.6431 0.0189 IEEE 802.11n (20MHz) port A + port B Power Density = 0.0378 + 0.0189 = 0.0567 (mW/cm2) Max Conducted Power for IEEE 802.11n (40MHz) port A: 19.62dBm Test Min. User Conducted Conducted Power Density Gain (dBi) Numeric Gain Mode Distance (cm) Power (dBm) Power (mW) (mW/cm2) 2.4G 20 3 1.584893 19.62 91.6220 0.0364 Max Conducted Power for IEEE 802.11n (40MHz) port B: 17.14dBm Test Min. User Conducted Conducted Power Density Gain (dBi) Numeric Gain Mode Distance (cm) Power (dBm) Power (mW) (mW/cm2) 2.4G 20 3 1.584893 17.14 51.7607 0.0206 IEEE 82.11n (40MHz) port A + port B Power Density = 0.0364 + 0.0206 = 0.0570 (mW/cm2) Page No. : A4 of A4 FCC ID : NDD9564751027


Document Created: 2019-10-27 07:10:39
Document Modified: 2019-10-27 07:10:39
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