RF Exposure MPE

FCC ID: 2ANOG-A76F

RF Exposure Info

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FCCID_3599042

1. MAXIMUM PERMISSIBLE EXPOSURE (MPE) 1.1 Standard Applicable According to §1.1307(b)(1), system operating under the provisions of this section shall be operating in a manner that the public is not exposed to radio frequency energy level in excess limit for maximum permissible exposure. (a) Limits for Occupational / Controlled Exposure Electric Field Magnetic Field Averaging Times Frequency range Power Density Strength (E) Strength (H) | E |2, | H |2 or (MHz) (S) (mW/cm2) (V/m) (A/m) S (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 1500-100000 / / 5 6 (b) Limits for General Population / Uncontrolled Exposure Electric Field Magnetic Field Averaging Times Frequency range Power Density Strength (E) Strength (H) | E |2, | H |2 or (MHz) (S) (mW/cm2) (V/m) (A/m) S (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 1500-100000 / / 1 30 Note: f = frequency in MHz: * = Plane-wave equivalents power density 1.2 MPE Calculation Method S = (30*P*G) / (377*R2) S = power density (in appropriate units, e.g., mw/cm2) P = power input to the antenna (in appropriate units, e.g., mw) G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor is normally numeric gain. R = distance to the center of radiation of the antenna (in appropriate units, e.g., cm)

1.3 MPE Calculation Result Model No.: A76F, A76, A76A, A76B, A76C, A76G FCC ID: 2ANOG-A76F Device category: Wireless Smart Audio Module Wi-Fi (2.4G) Maximum peak output power: 15.25 (dBm) Maximum peak output power at antenna input terminal: 33.60(mW) Prediction distance: >20(cm) Prediction frequency: 2412 (MHz) Antenna gain: 2.46 (dBi) Directional gain: 1.76 (numeric) The worst case is power density at prediction frequency at 20cm: 0.0118(mw/cm2) MPE limit for general population exposure at prediction frequency: 1 (mw/cm2) 0.0118(mw/cm2) < 1 (mw/cm2) Bluetooth(EDR) Maximum peak output power: 8.174(dBm) Maximum peak output power at antenna input terminal: 6.57(mW) Prediction distance: >20(cm) Prediction frequency: 2402 (MHz) Antenna gain: 2.46 (dBi) Directional gain: 1.76 (numeric) The worst case is power density at prediction frequency at 20cm: 0.0023(mw/cm2) MPE limit for general population exposure at prediction frequency: 1 (mw/cm2) 0.0023(mw/cm2) < 1 (mw/cm2) Bluetooth(BLE) Maximum peak output power: 4.008(dBm) Maximum peak output power at antenna input terminal: 2.52(mW) Prediction distance: >20(cm) Prediction frequency: 2402 (MHz) Antenna gain: 2.46 (dBi) Directional gain: 1.76 (numeric) The worst case is power density at prediction frequency at 20cm: 0.0009(mw/cm2) MPE limit for general population exposure at prediction frequency: 1 (mw/cm2) 0.0009(mw/cm2) < 1 (mw/cm2) Bluetooth and Wi-Fi cannot transmit at the same time. So the transmitter complies with the RF exposure requirements and the SAR is not required.


Document Created: 2017-10-01 09:43:23
Document Modified: 2017-10-01 09:43:23
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