CTLB3585 Diffuser Board RF Exposure Info RF Exposure evaluation AirFixture, LLC

AirFixture, LLC Diffuser Board

Page 1 of CTLB3585 Diffuser Board RF Exposure Info RF Exposure evaluation AirFixture, LLC
Page 2 of CTLB3585 Diffuser Board RF Exposure Info RF Exposure evaluation AirFixture, LLC

FCC ID: 2ARX3-CTLB3585
RF Exposure Evaluation
Limits
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)
Limits for Maximum Permissible Exposure (MPE)
Frequency range
(MHz)
Electric field
strength
Magnetic field strength
Power density
(A/m)
(V/m)
(mW/cm )
Averaging time
(minutes)
(A) Limits for Occupational/Controlled Exposures
0.3–3.0
614
1.63
*(100)
3.0–30
1842/f
4.89/f
*(900/f )
30–300
61.4
0.163
1.0
300–1500
f/300
1500–100,000
(B) Limits for General Population/Uncontrolled Exposure
0.3–1.34
614
1.63
*(100)
30
1.34–30
824/f
2.19/f
*(180/f )
30
30–300
27.5
0.073
0.2
30
300–1500
f/1500
30
1500–100,000
1.0
30
f = frequency in MHz
Friis transmission formula: Pd = (Pout*G)/(4*pi*r )
Where
Pd = power density in mW/cm , 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 cm
Pd id the limit of MPE, 1 mW/cm . If we know the maximum gain of the antenna and the total power input to
the antenna, through the calculation, we will know the distance r where the MPE limit is reached.
Test Procedure
Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest
channel individually.
Test Result of RF Exposure Evaluation
Frequency
Output power to
antenna (mW)
Power Density at
R=20cm
Limit (mW/cm )
Result
(mW/cm )
2405MHz
52.12
0.0164
1.0
PASS
2440MHz
60.39
0.0190
1.0
PASS
2475MHz
49.77
0.0157
1.0
PASS
2480MHz
52.12
0.0164
1.0
PASS
Remark: antenna gain=2.00dBi
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Document ID4180557
Application IDLEHmeQKTqaXBf0Pp+tss5Q==
Document DescriptionRF Exposure evaluation
Short Term ConfidentialNo
Permanent ConfidentialNo
SupercedeNo
Document TypeRF Exposure Info
Display FormatAdobe Acrobat PDF - pdf
Filesize5.39kB (67402 bits)
Date Submitted2019-02-26 00:00:00
Date Available2019-02-26 00:00:00
Creation Date2019-02-20 02:41:46
Producing SoftwareMicrosoft® Office Word 2007
Document Lastmod2019-02-20 10:42:13
Document TitleRF Exposure evaluation
Document CreatorMicrosoft® Office Word 2007
Document Author: zmp

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