BH268A Bluetooth FM Transmitter RF Exposure Info 18_BH268A RFExp VTIN TECHNOLOGY Co., Limited

VTIN TECHNOLOGY Co., Limited Bluetooth FM Transmitter

Page 1 of BH268A Bluetooth FM Transmitter RF Exposure Info 18_BH268A RFExp VTIN TECHNOLOGY Co., Limited

RF EXPOSURE EVALUATION
1. PRODUCT INFORMATION
Product Description
Model Name
FCC ID
Bluetooth FM Transmitter
BH268A
2AIL4-BH268A
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)
BT Pt= 2.233dBm=1.672mW
The result for RF exposure evaluation
SAR=(1.672mW /5mm) .[√2.48(GHz)]= 0.527<3.0 for 1-g SAR
FM Pt=0.0000034mW
The result for RF exposure evaluation
SAR=(0.0000034mW /5mm) .[√0.1079(GHz)]= 0.00000022<3.0 for 1-g SAR
Simultaneous transmission between Bluetooth and FM transmitter
[(max. power of channel, including tune-up tolerance, mW) / (min. test separation
distance, mm)]·[√f(GHz)/x] W/kg, for test separation distances ≤ 50 mm;
where x = 7.5 for 1-g SAR and x = 18.75 for 10-g SAR.
SAR=(0.527+0.00000022)/7.5=0.070W/kg<1.6W/kg
4. CONCLUSION
The SAR evaluation is not required.
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Document ID3988426
Application ID6z+jTTBU9LVI2b7qSJ088w==
Document Description18_BH268A RFExp
Short Term ConfidentialNo
Permanent ConfidentialNo
SupercedeNo
Document TypeRF Exposure Info
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Filesize20.28kB (253504 bits)
Date Submitted2018-09-03 00:00:00
Date Available2018-09-03 00:00:00
Creation Date2018-08-30 11:07:11
Producing SoftwareMicrosoft® Office Word 2007
Document Lastmod2018-08-30 12:07:28
Document Title18_BH268A RFExp
Document CreatorMicrosoft® Office Word 2007
Document Author: USER

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