MPE

FCC ID: TVU-SX682

RF Exposure Info

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FCCID_971231

CETECOM ICT Services GmbH Test report No.: 2-4917-01-02/08 Date: 2008-05-31 Page 79 of 107 RF Exposure / Safety Calculation of Maximum Permissable Exposure (MPE) based on Section 1.1307(b) Requirements a) FCC limit is: 1mW/cm2 b) The Wimax CPE can be configured in one of three different setups: Setup 1: CPE with 9dBi internal antenna Setup 2: CPE with 9dBi external desktop antenna Setup 3: CPE with 18dBi external outdoor antenna c) The power density produced by the EUT is: Pt ⋅ Gt S peak = 4πR 2 Pt ⋅ Gt ⋅ dc S average = 4πR 2 ⋅ 100 Pt – Transitted power 251mW (rms peak) (24dBm) Gt – Antenna gain dependant on setup R – Distance from transmitter Dc – duty cycle d) The power density is: Setup 1 Setup 2 Setup 3 Pt - Power output 24dBm 24dBm 24dBm (rms peak) 24dBm 251mW 251mW 251mW Gt – Antenna gain 9dBi 9dBi – 3dB cable loss 18dBi – 3dB cable loss 8 4 31,6 Maximum duty cycle 45% 45% 45% R – Distance from antenna 20 20 120 (cm) Speak – peak power density 0,4 0,2 0,04 (mW/cm2) Saverage – average power 0,18 0,09 0,018 density (mW/cm2) e) Saverage << 1mW/cm2


Document Created: 2008-07-15 15:06:59
Document Modified: 2008-07-15 15:06:59
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