MPE CALCULATION

FCC ID: ZMOH330

RF Exposure Info

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FCCID_1738289

FCC ID: ZMOH330 Prediction of MPE limit at given distance Product Description: UMTS/HSPA+ Module Type: H330 1. Introduction Equation from page 18 of OET Bulletin 65, Edition 97-01 Where: S = power density P = power input to the antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna 2. Limits for Maximum Permissible Exposure According to FCC Part 1.1307, systems operating under the provisions of this section shall be operated in a manner the ensures that the public is not exposed to radio frequency energy level in excess of the commission’s guidelines. According to FCC Part 1.1310 RF exposure is calculated. Limits for General Population/ Uncontrolled Exposure Limits for General Population/ Uncontrolled Exposure Frequency Range Electric Field Magnetic Field Power Density (MHz) Strength(E)(V/m) Strength (H)(A/m) (S)(mW/cm2) 0.3-1.34 614 1.63 (100)* 1.34-30 824/f 2.19/f (180/f2)* 30-300 27.5 0.073 0.2 300-1500 f/1500 1500-100,000 1.0 Page 1 of 2

FCC ID: ZMOH330 3. Test result GSM 850MHz Maximum peak output power at antenna input terminal(dBm): 32.22 Maximum peak output power at antenna input terminal(mW): 1667.25 Source-based time-averaged output power: -- Prediction distance(cm): 20 Predication frequency(MHz): 836.5 Antenna Gain (typical) (dBi): 2.5 Power density at predication frequency at 20 cm(mW/cm2): 0.333 MPE limit for RF exposure at prediction frequency(mW/cm2): 0.558 GSM 1900MHz Maximum peak output power at antenna input terminal(dBm): 28.43 Maximum peak output power at antenna input terminal(mW): 696.63 Source-based time-averaged output power: -- Prediction distance(cm): 20 Predication frequency(MHz): 1880 Antenna Gain (typical) (dBi): 2.5 Power density at predication frequency at 20 cm(mW/cm2): 0.139 MPE limit for RF exposure at prediction frequency(mW/cm2): 1.0 4. Conclusion Since WCDMA conducted power is deemed to be less than GSM mode, the test result is passed. Page 2 of 2


Document Created: 2012-07-06 10:51:47
Document Modified: 2012-07-06 10:51:47
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