RF Exposure

FCC ID: ZKJ-WCATA007

RF Exposure Info

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FCCID_4188954

CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com RF EXPOSURE EVALUATION Applicant : Haier US Appliance Solutions, Inc. : Appliance Park, AP2-226, Louisville, KY 40225, Applicant Address United States Kind of Product : Wi-Fi Module Equipment : WCATA007 model name FCC ID : ZKJ-WCATA007 Certification : 10229A-WCATA007 Number IC Antenna type : Chip Antenna Antenna Gain : 1.47 dBi Page 1 of 4

CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com Standard Requirement The following RF exposure procedures are applicable : - FCC Rules Part 1.1310 Radiofrequency radiation exposure limits Table 1 below sets forth limits for Maximum Permissible Exposure (MPE) to radiofrequency electromagnetic fields. Table 1—Limits for Maximum Permissible Exposure (MPE) Frequency range Electric field strength Magnetic field strength Power density Averaging time (MHz) (V/m) (A/m) (mW/cm2) (minutes) (A) Limits for Occupational/Controlled Exposure 0.3-3.0 614 1.63 *100 6 2 3.0-30 1842/f 4.89/f *900/f 6 30-300 61.4 0.163 1.0 6 300-1,500 f/300 6 1,500-100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 *100 30 2 1.34-30 824/f 2.19/f *180/f 30 30-300 27.5 0.073 0.2 30 300-1,500 f/1500 30 1,500-100,000 1.0 30 f = frequency in MHz * = Plane-wave equivalent power density - ISED Rules RSS-102 Radio Frequency (RF) Exposure Compliance of Radiocommunication Apparatus (All Frequency Bands) Table 4 : RF Field Strength Limits for Devices Used by the General Public (Uncontrolled Environment) Frequency Range Electric Field Magnetic Field Power Density Reference Period (MHz) (V/m rms) (A/m rms) (W/m2) (minutes) 0.003-10 83 90 - Instantaneous* 0.1-10 - 0.73/ ƒ - 6** 1.1-10 87/ ƒ 0.5 - - 6** 10-20 27.46 0.0728 -2 6 20-48 58.07/ ƒ0.25 0.1540/ ƒ0.25 8.944/ ƒ0.5 6 48-300 22.06 0.05852 1.291 6 300-6000 3.142 ƒ 0.3417 0.008335 ƒ 0.3417 0.02619 ƒ 0.6834 6 6000-15000 61.4 0.163 10 6 15000-150000 61.4 0.163 10 616000/ ƒ 1.2 0.5 -4 0.5 -5 150000-300000 0.158 ƒ 4.21 x 10 ƒ 6.67 x 10 ƒ 616000/ƒ1.2 Note: ƒ is frequency in MHz. * Based on nerve stimulation (NS). ** Based on specific absorption rate (SAR). Page 2 of 4

CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 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, 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) Power density at the specific separation: S = PG/(4R2π) Where, S = Maximum power density (mW/cm2) P = Power input to the antenna (mW) G = Numeric power gain of the antenna R = Distance to the center of the radiation of the antenna (20cm = limit for MPE) Estimated safe separation: R = √(PG / 4π) Where, P = Power input to the antenna (mW) G = Numeric power gain of the antenna R = Distance to the center of the radiation of the antenna (20cm = limit for MPE) Page 3 of 4

CTK Co., Ltd. (Ho-dong), 113, Yejik-ro, Cheoin-gu, Yongin-si, Gyeonggi-do, Korea Tel: +82-31-339-9970 Fax: +82-31-624-9501 www.e-ctk.com RF Exposure Results Power Density P G EIRP Mode FCC ISED R (cm) (dBm) (dBi) (dBm) (mW/cm2) (W/m2) 802.11b 19.85 21.32 0.0270 0.0270 802.11g 14.35 1.47 15.82 0.0076 0.0076 20 802.11n HT20 14.26 15.73 0.0074 0.0074 Page 4 of 4


Document Created: 2019-02-27 14:09:40
Document Modified: 2019-02-27 14:09:40
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