MPE - r2

FCC ID: 2AC23-WT31M2311A

RF Exposure Info

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FCCID_3266029

MPE Calculation FCC: 2AC23-WT31M2311A Remark: Average ≤ Peak, which means that calculating the power density applying Peak power is worst case. The worst case operation mode generating the highest power is taken for calculation: WIFI: Frequency range: 2412-2462 MHz Typical use distance: d ≥ 20 cm Power density limit for mobile devices at 2.4 GHz: S ≤ 1 mW/cm2 Maximum measured conducted power (Peak): Pconducted = 14.34 dBm = 27.16 mW Antenna Gain: G = 3 dBi = 2 on the linear scale Calculation: Pradiated = Pconducted + Glinear = 14.34 dBm + 3 dBi = 17.34 dBm = 54.2 mW 2 2 Power density S = (Pradiated) / (4π x d ) = 54.2 / 5026 = 0.0108 mW/cm < 1 => below limit Frequency range: 2422-2452 MHz Typical use distance: d ≥ 20 cm Power density limit for mobile devices at 2.4 GHz: S ≤ 1 mW/cm2 Maximum measured conducted power (Peak): Pconducted = 13.27 dBm = 21.23 mW Antenna Gain: G = 3 dBi = 2 on the linear scale Calculation: Pradiated = Pconducted + Glinear = 13.27 dBm + 3 dBi = 16.27 dBm = 42.36 mW Power density S = (Pradiated) / (4π x d2) = 42.36 / 5026 = 0.0084 mW/cm2 < 1 => below limit Frequency range: 5180-5240 MHz Typical use distance: d ≥ 20 cm Power density limit for mobile devices at 2.4 GHz: S ≤ 1 mW/cm2 Maximum measured conducted power (Peak): Pconducted = 17.45 dBm = 55.59 mW Antenna Gain: G = 3.91 dBi = 2.46 on the linear scale Calculation: Pradiated = Pconducted + Glinear = 17.45 dBm + 3.91 dBi = 21.36 dBm = 136.77 mW Power density S = (Pradiated) / (4π x d2) = 136.77 / 5026 = 0.0272 mW/cm2 < 1 => below limit Frequency range: 5190-5230 MHz Typical use distance: d ≥ 20 cm Power density limit for mobile devices at 2.4 GHz: S ≤ 1 mW/cm2 Maximum measured conducted power (Peak): Pconducted = 14.2 dBm = 26.3 mW Antenna Gain: G = 3.91 dBi = 2.46 on the linear scale Calculation: Pradiated = Pconducted + Glinear = 14.2 dBm + 3.91 dBi = 18.11 dBm = 64.71 mW 2 2 Power density S = (Pradiated) / (4π x d ) = 64.71 / 5026 = 0.0129 mW/cm < 1 => below limit Frequency range: 5745-5825 MHz Typical use distance: d ≥ 20 cm Power density limit for mobile devices at 2.4 GHz: S ≤ 1 mW/cm2 Maximum measured conducted power (Peak): Pconducted = 17.34 dBm = 54.2 mW Antenna Gain: G = 3.91 dBi = 2.46 on the linear scale Calculation: Pradiated = Pconducted + Glinear = 17.34 dBm + 3.91 dBi = 21.25 dBm = 133.35 mW Power density S = (Pradiated) / (4π x d2) = 133.35 / 5026 = 0.0265 mW/cm2 < 1 => below limit Frequency range: 5755-5795 MHz Typical use distance: d ≥ 20 cm Power density limit for mobile devices at 2.4 GHz: S ≤ 1 mW/cm2 Maximum measured conducted power (Peak): Pconducted = 14.85 dBm = 30.55 mW Antenna Gain: G = 3.91 dBi = 2.46 on the linear scale Calculation: Pradiated = Pconducted + Glinear = 14.85 dBm + 3.91 dBi = 18.76 dBm = 75.16 mW Power density S = (Pradiated) / (4π x d2) = 75.16 / 5026 = 0.0150 mW/cm2 < 1 => below limit

BLE: Frequency range: 2402-2480 MHz Typical use distance: d ≥ 20 cm Power density limit for mobile devices at 2.4 GHz: S ≤ 1 mW/cm2 Maximum measured conducted power (Peak): Pconducted = -3.1 dBm = 0.49 mW Antenna Gain: G = 3 dBi = 2 on the linear scale Calculation: Pradiated = Pconducted + Glinear = -3.1 dBm + 3 dBi = -0.1 dBm = 0.98 mW 2 2 Power density S = (Pradiated) / (4π x d ) = 0.98 / 5026 = 0.0002 mW/cm < 1 => below limit BT: Frequency range: 2402-2480 MHz Typical use distance: d ≥ 20 cm Power density limit for mobile devices at 2.4 GHz: S ≤ 1 mW/cm2 Maximum measured conducted power (Peak): Pconducted = 4.3 dBm = 2.69 mW Antenna Gain: G = 3 dBi = 2 on the linear scale Calculation: Pradiated = Pconducted + Glinear = 4.3 dBm + 3 dBi = 7.3 dBm = 5.37 mW 2 2 Power density S = (Pradiated) / (4π x d ) = 5.37 / 5026 = 0.0011 mW/cm < 1 => below limit Note that WiFi (2.4 or 5G mode ) + Bluetooth (BT or BLE mode) can transmit simultaneously, the sum WiFi and Bluetooth powers are far under the limit, whereas the sum of the worst- case power densities of WiFi and Bluetooth is 0.0272+0.0011 = 0.0283 mW/cm2, which is also far below the limit of 1 mW/cm2.


Document Created: 2019-09-25 19:07:57
Document Modified: 2019-09-25 19:07:57
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