18_XHT-6B16 RFExp r1

FCC ID: 2AKC6XHT-WF6D

RF Exposure Info

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FCCID_4347779

RF EXPOSURE EVALUATION

1. PRODUCT INFORMATION

Product Description Dual Band Wireless USB Adapter

Model Name XHT-6B16, XHT-6B18

FCC ID 2AKC6XHT-WF6D

2. EVALUATION METHOD

According to 447498 D01 General RF Exposure Guidance v05
The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation
distances ≤ 50 mm are determined by:
[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,
mm)] ·[√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR.
Where f(GHz) is the RF channel transmit frequency in GHz
Power and distance are rounded to the nearest mW and mm before calculation

3. CALCULATION

According to the follow transmitter output power（Pt）formula：
Pt=（E x d）2/（30 x gt）
Pt=transmitter output power in watts
gt=numeric gain of the transmitting antenna (unitess)
E=electric field strength in V/m
d=measurement distance in meters (m)

For 2.4G WIFI
Pt=9.06dBm=8.05mW
The result for RF exposure evaluation
SAR=(8.05mW /5mm) .[√2.462(GHz)]= 2.55<3.0 for 1-g SAR

For 5G WIFI
Pt=6.95dBm=4.95mW
The result for RF exposure evaluation
SAR=(4.95mW /5mm) .[√5.825(GHz)]=2.39<3.0 for 1-g SAR

Note: The 2.4G and 5G WIFI can not transmit simultaneously.

4. CONCLUSION

The SAR evaluation is not required.

Document Created: 2019-07-09 12:39:15
Document Modified: 2019-07-09 12:39:15

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