MPE

FCC ID: YR8ES001

RF Exposure Info

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FCCID_1374520

                                   FCC ID:YR8ES001



Maximum Permissible Exposure

as specified in Table 1B of 47 CFR 1.1310 – Limits for Maximum Permissible Exposure
(MPE), Limits for General Population/Uncontrolled Exposure

                Frequency range (MHz)            Power density (mW/cm²)
                     300 – 1,500                         f/1500
                   1,500 – 100,000                         1.0


Calculations 850 MHz band (824.7 – 848.31 MHz)

Maximum peak output power at antenna input terminal: 33.14 dBm (~2.06 W)

Predicted distance R: 20 cm
Predicted frequency: 848.86 MHz

MPE limit S: 0.5659 mW/cm²

Equation OET bulletin 65, page 18, edition 97-01: S = P*G / (4πR²)

S = power density
P = power input to the antenna
G = numeric gain of the antenna in the direction of interest relative to an isotropic radiator
R = distance to the centre of radiation of the antenna

Maximum allowable antenna gain: max 1.40 dBi

Prediction
The maximum allowable MPE value of 0,5498 mW/cm²will be reached in a distance of
20 cm in case that an antenna with an antenna gain of 1.40 dBi will be used. This
means that the power density levels in a distance of 20 cm are in accordance with the
FCC regulations as long as the used antenna has a gain below 1.40 dBi.


                                   FCC ID:YR8ES001



Maximum Permissible Exposure

as specified in Table 1B of 47 CFR 1.1310 – Limits for Maximum Permissible Exposure
(MPE), Limits for General Population/Uncontrolled Exposure

                Frequency range (MHz)            Power density (mW/cm²)
                     300 – 1,500                         f/1500
                  1,500 – 100,000                          1.0



Calculations 1900 MHz band (1851.25 – 1908.75 MHz)

Maximum peak output power at antenna input terminal: 30.75 dBm (~1.1885 W)

Prediction distance R: 20 cm
Prediction frequency: 1850.14 MHz

MPE limit S: 1 mW/cm²


Equation OET bulletin 65, page 18, edition 97-01: S = P*G / (4πR²)

S = power density
P = power input to the antenna
G = numeric gain of the antenna in the direction of interest relative to an isotropic radiator
R = distance to the centre of radiation of the antenna

Maximum allowable antenna gain for mobile/portable stations: 6.26 dBi
Maximum allowable antenna gain for other stations: 2.26 dBi

Prediction

The maximum allowable MPE value of 1 mW/cm²will be reached in a distance of 20 cm
in case that an antenna with an antenna gain of 6.26 dBi will be used. This means that
the power density levels in a distance of 20 cm are in accordance with the FCC
regulations as long as the used antenna has a gain below 6.26 dBi. For mobile and
portable stations the EIRP is restricted to 2.0 Watts, (§24.232 (c)). Therefore the
maximum antenna gain is 2.26 dBi.



Document Created: 2005-11-04 16:10:36
Document Modified: 2005-11-04 16:10:36

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