Smart Route DataCollector RF Exposure Info - MPE Calculation DataCollector Kenure Developments Ltd

Kenure Developments Ltd Smart Route DataCollector

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Document DescriptionRF Exposure Analysis
Document TypeRF Exposure Info
Document TitleMicrosoft Word - MPE Calculation DataCollector.doc

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KENURE DEVELOPMENTS LIMITED
THE COMPLETE DESIGN AND CONTRACT MANUFACTURE SERVICE
Registered Office: Springlakes Deadbrook Lane Aldershot Hampshire GU12 4UH
Tel: (01252) 338554 Fax:(01252) 329105
Registration No: 2265402
ISO 9001 GB13/87609
RF Exposure and Transmitter Power Considerations for
the
Smart Route DataCollector
FCC ID: Q8Q-SRDC
The FCC requires that the calculated MPE be equal to or less than a given limit
dependent on frequency
at a distance of 20 cm from a device to the body of a user.
The transmitter operation for the Smart Route DataCollector covers the 902 MHz to 928
MHz ISM band. The Smart Route DataCollector also contains a 2G/3G WWAN modem
(FCC ID: RI7HE910) using the GSM850, PCS1900 and UMTS 1700 operating bands.
The following FCC Rule Parts and procedures are applicable:
Part 1.1310 – Radiofrequency radiation exposure limits
Part 2.1091 – Radiofrequency radiation exposure evaluation: mobile devices
Part 15.247(b)(2) - The maximum peak conducted output power of the intentional radiator shall not exceed
the following: For frequency hopping systems operating in the 902–928 MHz band: 1 watt for systems
employing at least 50 hopping channels.
Part 15.247(b)(4) - The conducted output power limit specified in paragraph (b) of this section is based on
the use of antennas with directional gains that do not exceed 6 dBi.
Part 22.913(a)(2) - The ERP of mobile transmitters and auxiliary test transmitters must not exceed 7 Watts.
Part 24.232(c) - Mobile/ Portable stations are limited to 2 Watts EIRP peak power
Part 27.50(d)(4) - Fixed, mobile, and portable (hand-held) stations operating in the 1710-1755 MHz band
and mobile and portable stations operating in the 1695-1710 MHz and 1755-1780 MHz bands are limited to
1 watt EIRP
KDB447498 D01 v05 - Mobile and Portable Devices RF Exposure Procedures and Equipment
Authorisation Policies
KENURE DEVELOPMENTS LIMITED
THE COMPLETE DESIGN AND CONTRACT MANUFACTURE SERVICE
Registered Office: Springlakes Deadbrook Lane Aldershot Hampshire GU12 4UH
Tel: (01252) 338554 Fax:(01252) 329105
Registration No: 2265402
ISO 9001 GB13/87609
Maximum Transmitter Power Considerations
For ISM Band 902 MHz to 928 MHz
Maximum conducted power = 30.0 dBm (1000 mW)
Maximum specified antenna gain = 2.2 dBi
EIRP = 30.0+ 2.2 = 32.2 dBm
= 1660 mW
Therefore the Smart Route DataCollector meets Part 15.247(b)(2) & 15.247(b)(4) conducted and de facto
EIRP power limits (1 W and 4W respectively).
For GSM 850 MHz 2G Operation
Transmitter frequency range = 824.2 MHz to 848.8 MHz
Maximum conducted power = 33.0 dBm (2000 mW)
Specified antenna gain = 2.0 dBi
EIRP = 33.0 + 2.0 = 35.0 dBm
= 3162 mW
For Class 10 GPRS with 2 uplink timeslots, duty cycle = 25%
EIRP
eff
= 3162/4 = 791 mW
ERP = 35.0 - 2.2 = 32.8 dBm
= 1905 mW
For Class 10 GPRS with 2 uplink timeslots, duty cycle = 25%
ERP
eff
= 1905/4 = 476 mW
KENURE DEVELOPMENTS LIMITED
THE COMPLETE DESIGN AND CONTRACT MANUFACTURE SERVICE
Registered Office: Springlakes Deadbrook Lane Aldershot Hampshire GU12 4UH
Tel: (01252) 338554 Fax:(01252) 329105
Registration No: 2265402
ISO 9001 GB13/87609
For GSM 850 MHz 3G Operation
Transmitter frequency range = 826.4 MHz to 846.4 MHz
Maximum conducted power = 26.6 dBm (460 mW)
Specified antenna gain = 2.0 dBi
EIRP = 26.6 + 2.0 = 28.6 dBm
= 724 mW
ERP = 28.6 - 2.2 = 26.4 dBm
= 437 mW
Therefore the Smart Route DataCollector meets Part 22.913(a)(2) power limits (ERP 7
Watts).
Also the categorical exclusion provision of FCC Part 2.1091(c) applies as ERP
eff
< 1.5W
(with considerations of source based time averaging as per KDB 447498 Section 4.1(2))
KENURE DEVELOPMENTS LIMITED
THE COMPLETE DESIGN AND CONTRACT MANUFACTURE SERVICE
Registered Office: Springlakes Deadbrook Lane Aldershot Hampshire GU12 4UH
Tel: (01252) 338554 Fax:(01252) 329105
Registration No: 2265402
ISO 9001 GB13/87609
For PCS 1900 MHz 2G Operation
Transmitter frequency range = 1850.2 MHz to 1909.8 MHz
Maximum conducted power = 30.0 dBm (1000 mW)
Specified antenna gain = 2.0 dBi
EIRP = 30.0 + 2.0 = 32.0
= 1585 mW
For Class 10 GPRS with 2 uplink timeslots, duty cycle = 25%
EIRP
eff
= 1585/4 = 396 mW
For PCS 1900 MHz 3G Operation
Transmitter frequency range = 1852.4 MHz to 1907.6 MHz
Maximum conducted power = 26.4 dBm (437 mW)
Specified antenna gain = 2.0 dBi
EIRP = 26.4 + 2.0 = 28.4 dBm
= 692 mW
Therefore the Smart Route DataCollector meets 24.232(c) power limits (EIRP 2 Watts).
Also the categorical exclusion provision of FCC Part 2.1091(c) applies as EIRP
eff
< 3.0W
(with considerations of source based time averaging as per KDB 447498 Section 4.1(2))
For UMTS 1700 MHz 3G Operation
Transmitter frequency range = 1712.4 MHz to 1752.6 MHz
Maximum conducted power = 26.4 dBm (437 mW)
Specified antenna gain = 2.0 dBi
EIRP = 26.4 + 2.0 = 28.4 dBm
= 692 mW
Therefore the Smart Route DataCollector meets 27.50(d)(4) power limits (EIRP 1 Watt).
Also the categorical exclusion provision of FCC Part 2.1091(c) applies as EIRP
eff
< 3.0W
(with considerations of source based time averaging as per KDB 447498 Section 4.1(2))
KENURE DEVELOPMENTS LIMITED
THE COMPLETE DESIGN AND CONTRACT MANUFACTURE SERVICE
Registered Office: Springlakes Deadbrook Lane Aldershot Hampshire GU12 4UH
Tel: (01252) 338554 Fax:(01252) 329105
Registration No: 2265402
ISO 9001 GB13/87609
MPE Calculations
The MPE calculation as given in ANSI C95.1 is used to calculate the safe operating
distance for the user.
S = EIRP/4 π R
2
Where S = Power density
EIRP = Effective Isotropic Radiated Power (EIRP = P x G)
P = Conducted Transmitter Power
G = Antenna Gain (relative to an isotropic radiator)
R = distance to the centre of radiation of the antenna (safe operating
distance)
For ISM Band 902 MHz to 928 MHz
Values:
Transmitter frequency range = 902.5 MHz to 927.5 MHz
EIRP = 1660 mW
R = 20 cm
Power Density Requirement
From table 1 (b) - Limits for General Population/ Uncontrolled Exposure of
FCC Rule Part 1.1310 for ISM Band 902 MHz to 928 MHz
S = f/1500 mW/cm
2
(f = operating frequency)
S
req1
= 902.5/1500 = 0.61 mW/cm
2
(worst case)
Calculation:
S = EIRP/4 π R
2
S = 1660/(12.56 x 20
2
)
S
=
1660/(5024)
S
1
= 0.33 mW/ cm
2
(<0.61 mW/cm
2
)
KENURE DEVELOPMENTS LIMITED
THE COMPLETE DESIGN AND CONTRACT MANUFACTURE SERVICE
Registered Office: Springlakes Deadbrook Lane Aldershot Hampshire GU12 4UH
Tel: (01252) 338554 Fax:(01252) 329105
Registration No: 2265402
ISO 9001 GB13/87609
For GSM 850 MHz (Worst case: 2G operation)
Values:
Transmitter frequency range = 824.2 MHz to 848.8 MHz
EIRP
eff
= 791 mW
R = 20 cm
Power Density Requirement
From table 1 (b) - Limits for General Population/ Uncontrolled Exposure of
FCC Rule Part 1.1310 for 850 MHz
S = f/1500 mW/cm
2
(f = operating frequency)
S
req2
= 824/1500 = 0.55 mW/cm
2
(worst case)
Calculation:
S = EIRP
eff
/4 π R
2
S = 791/(12.56 x 20
2
)
S
= 791/(5024)
S
2
= 0.16 mW/ cm
2
(<0.55 mW/cm
2
)
For PCS 1900 MHz (Worst case: 3G operation)
Values:
Transmitter frequency range = 1852.4 MHz to 1907.6 MHz
EIRP
eff
= 692 mW
R = 20 cm
Power Density Requirement
From table 1 (b) - Limits for General Population/ Uncontrolled Exposure of
FCC Rule Part 1.1310 for 1900 MHz
S
req3
= 1.0 mW/cm
2
KENURE DEVELOPMENTS LIMITED
THE COMPLETE DESIGN AND CONTRACT MANUFACTURE SERVICE
Registered Office: Springlakes Deadbrook Lane Aldershot Hampshire GU12 4UH
Tel: (01252) 338554 Fax:(01252) 329105
Registration No: 2265402
ISO 9001 GB13/87609
Calculation:
S = EIRP
eff
/4 π R
2
S= 692/(12.56 x 20
2
)
S
= 692/(5024)
S
3
= 0.138 mW/cm
2
(<1.0 mW/cm
2
)
KENURE DEVELOPMENTS LIMITED
THE COMPLETE DESIGN AND CONTRACT MANUFACTURE SERVICE
Registered Office: Springlakes Deadbrook Lane Aldershot Hampshire GU12 4UH
Tel: (01252) 338554 Fax:(01252) 329105
Registration No: 2265402
ISO 9001 GB13/87609
For UMTS 1700 MHz
Values:
Transmitter frequency range = 1712.4 MHz to 1752.6 MHz
EIRP
eff
= 692 mW
R = 20 cm
Power Density Requirement
From table 1 (b) - Limits for General Population/ Uncontrolled Exposure of
FCC Rule Part 1.1310 for 1700 MHz
S
req4
= 1.0 mW/cm
2
Calculation:
S = EIRP
eff
/4 π R
2
S= 692/(12.56 x 20
2
)
S = 692/(5024)
S
4
= 0.138 mW/cm
2
(<1.0 mW/cm
2
)
KENURE DEVELOPMENTS LIMITED
THE COMPLETE DESIGN AND CONTRACT MANUFACTURE SERVICE
Registered Office: Springlakes Deadbrook Lane Aldershot Hampshire GU12 4UH
Tel: (01252) 338554 Fax:(01252) 329105
Registration No: 2265402
ISO 9001 GB13/87609
KDB447498 D01 v05r02 Section 7.2 Simultaneous Transmission Considerations
Worst case summation of calculated MPE ratios for the 902 MHz to 928 MHz ISM band
and the GSM850, PCS1900 or UMTS1700 simultaneously transmitting transmitters is:
ie:
Σ
MPE
ratios
= (S
1
/ S
req1
)
+
(S
2
/ S
req2
)
= (0.33/0.61) + (0.16/0.55)
= 0.54 + 0.29 = 0.83
Σ
of MPE ratios<1.0, so in accordance with KDB447498 Section 7.2, simultaneous
transmission test exclusion applies for the ISM Band 902 MHz to 928 MHz and GSM805
/ PCS1900 / UMTS1700 transmitters.
Conclusion
The required 20 cm RF exposure limits for General Population/ Uncontrolled Exposure FCC Rule Part
15.247(b)(2), 22.913(a)(2), 24.232(c) and 27.50(d)(4) maximum transmitter power limits will not be
exceeded for the Smart Route DataCollector using antennas having a maximum gain of 2.2 dBi and 2.0 dBi
for the ISM and WWAN antennas respectively.
Download: Smart Route DataCollector RF Exposure Info - MPE Calculation DataCollector Kenure Developments Ltd
Mirror Download [FCC.gov]Smart Route DataCollector RF Exposure Info - MPE Calculation DataCollector Kenure Developments Ltd
Document ID3253342
Application IDoyR+1+ouDXwHVLtZf4thtA==
Document DescriptionRF Exposure Analysis
Short Term ConfidentialNo
Permanent ConfidentialNo
SupercedeNo
Document TypeRF Exposure Info
Display FormatAdobe Acrobat PDF - pdf
Filesize165366
Date Submitted2017-01-10 00:00:00
Date Available2017-01-10 00:00:00
Creation Date2016-12-15 10:02:39
Producing SoftwareNitro PDF PrimoPDF
Document Lastmod2016-12-15 10:02:39
Document TitleMicrosoft Word - MPE Calculation DataCollector.doc
Document CreatorPrimoPDF http://www.primopdf.com
Document Author: Win7 64 CAD

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