MPE

FCC ID: XXZM07STM

RF Exposure Info

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FCCID_1211087

CTK Co., Ltd. 386-1, Ho-dong, Cheoin-gu, Yongin-si, Gyeonggi-do, 449-100, Korea Tel: +82-31-339-9970 Fax: +82-31-339-9855 www.e-ctk.com APPENDIX B – MPE CALCULATION Test Report No.: 2009110096 Page 44 of 45 Date: November 30, 2009 This Report shall not be reproduced except in full without the written approval of CTK Form No.: CTK-RF-EF-Part15 SubpartC(Rev.2)

CTK Co., Ltd. 386-1, Ho-dong, Cheoin-gu, Yongin-si, Gyeonggi-do, 449-100, Korea Tel: +82-31-339-9970 Fax: +82-31-339-9855 www.e-ctk.com ** MPE Calculations ** The EUT will only be used with a separation of 20 centimeters or greater between the antenna and the body of the user. The MPE calculation for this exposure is shown below. The peak radiated output power (EIRP) is calculated as follows: EIRP = P + G Where, EIRP = 22.20 dBm P = Power input to the antenna (mW) G = Power gain of the antenna (dBi) The numeric gain(G) of the antenna with a gain specified in dB is determined by: G = Log-1 (dB antenna gain / 10) G = Log-1 (0/ 10) G = 1.00 Power density at the specific separation: S = PG/(4R2π) Where, S = Maximum power density (mW/cm2) S = (92.26 * 1.80) / (4 * 202 * P = Power input to the antenna (mW) π) G = Numeric power gain of the antenna R = Distance to the center of the radiation of the antenna S = 0.0330 mW/cm2 (20cm = limit for MPE) The Maximum permissible exposure (MPE) for the general population is 1 mW/cm2. The power density at 20cm does not exceed the 1 mW/cm2 limit. Test Report No.: 2009110096 Page 45 of 45 Date: November 30, 2009 This Report shall not be reproduced except in full without the written approval of CTK Form No.: CTK-RF-EF-Part15 SubpartC(Rev.2)


Document Created: 2009-12-08 21:34:51
Document Modified: 2009-12-08 21:34:51
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