MPE

FCC ID: XPYLUCYH200

RF Exposure Info

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FCCID_1320530

                                                                                     MDE_UBLOX_0902



u-blox AG
Mr. Giulio Comar
Via Stazione di Prosecco, 15
34010 Sgonico (TS)
Italy




Sven Lüngen
30.06.2010
Phone +49 (0) 2102 749 153
Fax +49 (0) 2102 749 350
e-Mail : sven.luengen@7layers.de



Maximum Permissible Exposure for product: Lucy-H200



Dear Mr. Comar,

please find enclosed your Maximum Permissible Exposure calculations
for the Lucy-H200.


Best Regards




Sven Lüngen (Senior Project Manager)




7 layers AG                        Aufsichtsratsvorsitzenderh           Registergerichth registered
in:
Borsigstrasse 11                   Chairman of the Supervisory Board:   Düsseldorf, HRB 44096
40880 Ratingen, Germany            Markus Becker                        USt-IdNr h VAT No.:
Phone: +49 (0) 2102 749 0          Vorstandh Board:                     DE 203159652
Fax: +49 (0) 2102 749 350          Dr. Hans Jürgen Meckelburg           TAX No. 147/5869/0385
www.7Layers.com                    Wilfried Klassmann


                                                                                                            -2-



                                         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 – 1500                         f/1500
                                  1,500 – 100000                         1.0

                                  (as specified in Table 2 in EN 1999/519-EC)
                              Frequency range (MHz)      Power density (mW/cm²)
                                   400 – 2000                     f/2000
                                  2000 - 300000                 1 mW/cm²

                                                   General Comment

           The Lucy-H200 operates with power reduction as described in 3 GPP TS 51.010-1
           v9.01. For reference see table 2. For determination of the maximum antenna gain in
           this calculation the power reduction and the duty cycle effect are considered. Table 1
           shows measured power values in different uplink slot operation modes and the
           calculated RMS power under consideration of the duty cycle effect.

 Typical max output power (calibration target, calibration tolerances not considered)


                           GSM850/GSM900                                       GSM1800/GSM1900
                            Power/slot      Nof TX slots                       Power/slot   Nof TX slots
Operative Mode                 [dBm]                                              [dBm]
 GSM      Normal TCH             32.2              1                               29.2           1
 GPRS     1‐TX‐GMSK              32.2              1                               29.2           1
 GPRS     2‐TX‐GMSK              30.5              2                               27.5           2
 GPRS     3‐TX‐GMSK              29.0              3                               27.5           3
 GPRS     4‐TX‐GMSK              27.0              4                               26.0           4
 EDGE     1‐TX‐8PSK              26.0              1                               25.0           1
 EDGE     2‐TX‐8PSK              24.2              2                               23.5           2
 EDGE     3‐TX‐8PSK              22.4              3                               21.8           3
 EDGE     4‐TX‐8PSK              20.6              4                               21.8           4


 UMTS                       Band I                           Band II                        Band V
                            Average Power                    Average Power                  Average Power
Operative Mode                 [dBm]                             [dBm]                         [dBm]
Max Power setting                23.0                             23.0                           23.0


                                            Table 1: Power values of Lucy-H200


                                                                             -3-




                               Number of          Permissible nominal
                           timeslots in uplink   reduction of maximum
                              assignment           output power, (dB)
                                    1                       0
                                    2                      3,0
                                    3                      4,8
                                    4                      6,0
                                    5                      7,0
                                    6                      7,8
                                    7                      8,5
                                    8                      9,0

Table 2: Allowed power reduction in multi slot class operation modes for Rel5 and onwards
devices, ref: 3GPP TS 51.010-1 v9.01


                                                                                  -4-



                         Calculations 850/900 MHz band

Maximum RMS output power at Antenna terminal according to table 1
30.5 dBm – 6.02 dBm (2TX) =                                              24.48 dBm

Maximum  output  power         at   Antenna     terminal   according    Test  report
MDE_UBLOX_0902_FCCb:                                                     33.29 dBm


Prediction distance R:      20 cm
Prediction frequency:       824.20 MHz

MPE limit S:                0.5494 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 = power 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 permissible antenna gain considering S limit                   5.85 dBi

Maximal permissible antenna gain considering output power limitation of 7 Watts ERP
(FCC §22.931).

G=10*log(7000)-33.29+2.15                                              7.30 dBi

                                     Prediction

The maximum allowed MPE value of 0.5494 mW/cm²will be reached in a distance of
20 cm in case that an antenna with an antenna gain of 5.85 dBi is used. Considering
the max output power of 7 Watts ERP (FCC §22.931) for mobile stations the
maximum antenna gain is 7.30 dBi, which is higher than 5.85 dBi. For mobile
stations the antenna gain is limited to 5.85 dBi in accordance to the FCC regulations.


                                                                                   -5-



                          Calculations 1800 MHz band

Maximum RMS output power at Antenna terminal according to table 1
27.5 dBm – 4.26 dBm (3TX) =                                              23.24 dBm


Prediction distance R:     20 cm
Prediction frequency:      1710.2 MHz

MPE limit S:               1 mW/cm² (according to FCC Bulletin 65)


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

S = power density
P = power input to the antenna
G = power 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 permissible antenna gain considering S limit                   15.03 dBi


                                    Prediction

The maximum allowed MPE value of 0.8551 mW/cm² will be reached in a distance of
20 cm in case that an antenna with an antenna gain of 15.03 dBi is used. This means
that the power density levels in a distance of 20 cm are in accordance with the EN
regulations as long as the used antenna has a gain below 15.03 dBi.


                                                                                -6-



                          Calculations 1900 MHz band

Maximum RMS output power at Antenna terminal according to table 1
27.5 dBm – 4.26 dBm (3TX) =                                               23.24 dBm

Maximum  output  power         at   Antenna    terminal     according   Test  report
MDE_UBLOX_0902_FCCc:                                                     30.72 dBm


Enhancement factor EF      2.56 (see FCC Bulletin OET 65)
Prediction distance R:     20 cm
Prediction frequency:      1850.2 MHz

MPE limit S:               1 mW/cm²


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

S = power density
P = power input to the antenna
G = power 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 permissible antenna gain (Table 1B of 47 CFR 1.1310):               9.69 dBi
Maximum permissible antenna gain for mobile / portable stations:            2.29 dBi
(Considering 2 Watts EIRP FCC §24.235: G=10*log(2000)-30.72)

                                    Prediction


The maximum allowed MPE value of 1 mW/cm² will be reached in a distance of 20 cm
in case that an antenna with an antenna gain of 9.69 dBi is 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 9.69 dBi. Considering the
max output power of 2 Watts EIRP (FCC §24.235) for mobile / portable stations the
maximum antenna gain is 2.29 dBi, which is lower than 9.69 dBi. For mobile and
portable stations the antenna gain is limited to 2.29 dBi in accordance with the FCC
regulations.


                                                                                -7-



                          Calculations 2100 MHz band

Maximum RMS output power at Antenna terminal according to table 1         23.00 dBm



Enhancement factor EF      2.56 (see FCC Bulletin OET 65)
Prediction distance R:     20 cm
Prediction frequency:      1922.40 MHz

MPE limit S:               0.9612 mW/cm²


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

S = power density
P = power input to the antenna
G = power 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 permissible antenna gain:                                           9.76 dBi


                                    Prediction


The maximum allowed MPE value of 0.9612 mW/cm² will be reached in a distance of
20 cm in case that an antenna with an antenna gain of 9.76 dBi is used. This means
that the power density levels in a distance of 20 cm are in accordance with the EN
regulations as long as the used antenna has a gain below 9.76 dBi.



Document Created: 2010-07-16 15:07:39
Document Modified: 2010-07-16 15:07:39

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