MPE Test Report SAR

FCC ID: QOQWFM200

Test Report

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FCCID_4469080

Reference number: 297217—5—2 SAR EXCLUSION JUSTIFICATION Page 1 of 2 Manufacturer: Silicon Laboratories Finland Oy Device: Wi—Fi 802.11b/g/n SiP transceiver radio module Model: WFM200SA¥A, WFM200SN FCC ID: QOGgWwFM200 ISED ID: 5123A—WFM200 REFERENCE DOCUMENTS KDB447498 DO1 General RF Exposure Guidance v0O6, 23 October 2015 FCC CFR 47 §1.1310, Radio frequency exposure limits FCC CFR 47 §2.1091, Radio frequency exposure evaluation: mobile devices 297217—1—1, FCC IC RF Test Report, 23 September 2019 EUT SPECIFICATION RF characteristics of the assessed radio: Operating Frequency Range: 2412—2462 MHz Channels: 11 Nominal channel bandwidth: 20 MHz Channel separation: 5 MHz Maximum conducted power: 16.4 dBm Modulation: CCK, QPSK, OFDM Integral Antenna gain: 4.7 dBi External Antenna gain: 4.7 dBi Antenna type: internal and external Antenna count: 1—2 (Not transmit simultaneously) Device category: Mobile and portable SAR EXCLUSION JUsSTIFICATION Guidance document reference: KDB447498 D01 General RF Exposure Guidance v06, page 12, section 4.3.1. Step a) The 1—g and 10—g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances < 50 mm are determined: [{max. power of channel, including tune—up tolerance, mW) / (min. test separation distance, mm)] * [Vf(GHz)] > 3.0 for 1—g SAR and 7.5 for 10—g extremity SAR, where e —_f (GHz) is the RF channel transmit frequency in GHz e Power and distance are rounded to one decimal place for comparison e 3.0 and 7.5 are referred to as the numeric threshold in the step b) The test exclusions are applicable only when the minimum test separation distance is < 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum distance is < 5 mm, a distance of 5 mm according to f) in section 4.1 is applied to determine SAR test exclusion. Step b) For 100 MHz to 6 GHz and test separation distances > 50 mm, the 1—g and 10—g SAR test exclusion thresholds are determined by the following: {[Power allowed at numeric threshold for 50 mm in step a)] + [(test separation distance — 50 mm) * 10]} mW, for > 1500 MHz and <6 GHz

Reference number: 297217—5—2 SAR EXCLUSION JUSTIFICATION Page 2 of 2 These test exclusion conditions are based on source—based time—averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune—up tolerance, and the minimum test separation distance required for the exposure conditions. CALCULATIONS AND ASSUMPTIONS Analysis for FCC, portable use: EUT maximum TX power is 44 mW at frequency 2.437 GHz. 23 mm separation distance was used in calculation. The SAR exemption method was applied. Actual evaluation: SAR test exclusion threshold for 23 mm separation distance in step a) (44 mW ) * V2437 CHz =2.99 <3.0 23 mm Analysis for FCC, mobile use: _ EL.RP _ 129mW _ _ mW ~_ 4nR — 4r*(20cm} 0 ""cm > J l9 Evaltiation Spie Fss=imet fain en EIR? istance Power dsnsity M2E Lirnit Margin Result 129 mW 20 cm 0.026 mW/icm?* 1.0 mW/cm* 0.974 mWi/icm* PASS ConcLUusIoN The analysis shows that the device qualifies for exemption from SAR testing in portable and mobile use. In portable use SAR evaluation is not required for separation distance of 23 mm or more. Date: September 23, 2019 Mikko Halonen Development Engineer


Document Created: 2019-10-01 05:42:10
Document Modified: 2019-10-01 05:42:10
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