MPE Prediction

FCC ID: OA3RN1723

RF Exposure Info

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FCCID_2597265

Microchip Technology Inc. 2355 West Chandler Blvd. Chandler, Arizona, 85224—6199 United States Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Applicant‘s declaration concerning RF Radiation Exposure We hereby indicate that the product Product description: 2.4 GHz IEEE Std. 802.11 b/g Wireless LAN Module Model No: RN1723 The equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. The integral antennas used for this transmitter must not be co—located or operating in conjunction with any other antenna or transmitter within the host device. A safety statement concerning minimum separation distances from enclosure of the Product : 2.4 GHz IEEE Std. 802.11 b/g Wireless LAN Module will be integrated in the user‘s manual to provide end—users with transmitter operating conditions for satisfying RF exposure compliance. The appropriate information can be drawn from the test report no: W6D21501—14761—C—1 and the accompanying calculations. Company: Microchip Technology Inc. Address: 2355 West Chandler Blvd. Chandler, Arizona, 85224—6199 United States Date: 2015—04—21 Signature ze CGoblesk?

Registration number: W6D21501-14761-C-1 FCC ID: OA3RN1723 3.2 Equivalent isotropic radiated power FCC Rule: 15.247(b)(3) EIRP = max. conducted output power + antenna gain EIRP = 18.27 dBm + 2.2 dBi = 20.47 dBm Limit: EIRP = +36 dBm for Antenna gain < 6 dBi Test equipment used: ETSTW-RE 055 3.3 RF Exposure Compliance Requirements FCC OET Bulletin 65 Edition 97.01 determines the equations for predicting RF fields and applicable limits. The prediction for power density in the far-field but will over-predict power density in the near field, where it could be used for walking a “worst case” or conservative prediction. PG S = --------- 4πR2 S – Power Density P – Output power ERP R – Distance D – Cable Loss AG – Antenna Gain Item Unit Value Remarks P mW 67.14 Peak value D dB AG dBi 2.2 G 1.66 Calculated Value R cm 20 Assumed value 2 S mW/cm 0.022 Calculated value Limits: Limit for General Population / Uncontrolled Exposure Frequency Power Density (MHz) (mW/cm2) 1500 – 100.000 1.0 Worldwide Testing Services(Taiwan) Co., Ltd. Page 17 of 54


Document Created: 2015-04-23 14:21:44
Document Modified: 2015-04-23 14:21:44
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