RF Exposure Information

FCC ID: UKCA9XW

RF Exposure Info

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FCCID_2326087

RF Exposure Evaluation MPE Evaluation The EUT is a wireless device used in stationary application, at least 20 cm from any body part of the user or nearby persons. For 2.4 GHz radio, the maximum Peak EIRP calculated is -0.4 dBm (0.912 mW); therefore, to comply with RF Exposure requirement, the Power Density is calculated. The Power Density can be cacluated using the formula: S = EIRP/ 4πD2 Where: S is Power Density in W/m2 D is the distnace from the antenna in meters It is cosidered that 20 cm is the minimum distance tht user can go closest to the EUT. At 20cm. S =0.0018 W/m2, which is below the MPE limit of 10 W/m2 This equipment consists of an additional RFID radio in conjunction with the 2.4 GHz radio, and supports simultaneous operation. The RFID field stregnth at 3m distance is 57dBµV/m, equivalent to -38.3 dBm EIRP (0.00015mW). Hence, RFID power density at 20 cm distance is 0.0000003 W/m2. Per KDB# 447498 D01 General RF Exposure Guidance guidelines, simultaneous transmission MPE test exclusion applies when the sum of the MPE ratios for all simultaneous transmitting antennas incorporated in a host device, based on the calculated/estimated, numerically modeled or measured field strengths or power density, is ≤ 1.0. The 2.4 GHz radio power density is 0.0018 W/m2 and RFID power density is 0.0000003 W/m2. The sum of the MPE ratios is ≤ 1.0. The EUT complies with the requirements of KDB# 447498 RF Exposure for simultaneous transmission operations.


Document Created: 2014-07-15 11:23:52
Document Modified: 2014-07-15 11:23:52
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