RF Exposure

FCC ID: 2ATSQZK901A

RF Exposure Info

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FCCID_4380130

RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in §1.1307(b) FCC ID: 2ATSQZK901A EUT Specification EUT Vacuum Cleaner Frequency band WLAN: 2.412GHz ~ 2.462GHz (Operating) WLAN: 5.18GHz ~ 5.32GHz / 5.50GHz ~ 5.70GHz WLAN: 5.745GHz ~ 5825GHz Others Device category Portable (<20cm separation) Mobile (>20cm separation) Others ___ Exposure classification Occupational/Controlled exposure (S = 5mW/cm2) General Population/Uncontrolled exposure (S=1mW/cm2) Antenna diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Antenna gain (Max) 2.0 dBi Evaluation applied MPE Evaluation SAR Evaluation Limits for Maximum Permissible Exposure(MPE) Frequency Electric Field Magnetic Field Power Average Range(MHz) Strength(V/m) Strength(A/m) Density(mW/cm2) Time (A) Limits for Occupational/Control Exposures 300-1500 -- -- F/300 6 1500-100000 -- -- 5 6 (B) Limits for General Population/Uncontrol Exposures 300-1500 -- -- F/1500 6 1500-100000 -- -- 1 30

Friis transmission formula : Pd=(Pout*G)\(4*pi*R2) Where Pd= Power density in mW/om* Pout=output power to antenna in Mw G= gain of antenna in linear scale Pi=3.1416 R= distance between observation point and center of the radiator in om Pd the limit of MPE, 1mW/cem2. If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. Measurement Result Maximum Peak Output Power (dBm} Modulation Low Channel Middle Channel High Channel 802.11b 16.78 16.54 17.04 802.119 1515 15.03 15.26 802.11n—HT20 13.18 13.36 13.40 802.11n—HT40 13.29 13.28 18.27 Operating Test Tune up Output Ant. Power Power Mode Channel tolerance Max tune up Peak An.t. Gain density at density conducted Gain m (dBm) ower(dBm} power (dBi) {nume 20cm Limits P (mW ) ric) (mW/om*) (mW/om‘) 802.11b 1 16.78+1 17.78 59.979 2.0 1.58 0.01885 1 6 16.54+1 17.54 56.754 2.0 1.58 0.01784 1 11 17.04%+1 18.04 63.679 2.0 1.58 0.02002 1 802.11g 1 15.15%+1 16.15 41.209 |_2.0 1.58 0.01295 1 6 15.03+1 16.03 40.087 2.0 1.58 0.01260 1 11 15.26+1 16.26 42.267 2.0 1.58 0.01829 1 802.11n—H 1 18.18+1 14.18 26.182 2.0 1.58 0.00823 1 T20 6 18.36+1 14.36 27289 2.0 1.58 0.00858 1 11 134041 14.40 27542 20 1.58 0.00866 1 802.11n—H 3 18.29+1 14.29 26.858 2.0 1.58 0.00844 1 T4G 3 18.28+1 14.28 26.792| 2.0 1.58 0.00842 1 9 18.27+1 14.27 26.730 2.0 1.58 0.00840 1 Signature &4 n Date: 2019—04—20


Document Created: 2019-07-23 06:01:57
Document Modified: 2019-07-23 06:01:57
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