11 revised MPE report

FCC ID: XPYLISAU200

RF Exposure Info

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FCCID_1707344

Prediction of MPE

The device is designed as module to be installed in other devices. This device is to be used only for fixed and mobile applications. If the
final product after integration is intended for portable use, a new application and FCC is required.

The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all the persons and must
not be co-located or operating in conjunction with any other antenna or transmitter.

The table below is excerpted from Table 1B of 47 CFR 1.1310 titled Limits for Maximum Permissible Exposure (MPE) and Health Canada
Safety Code 6, Limits for General Population/Uncontrolled Exposure:




     Frequency Range (MHz)                   Power density (mW/cm2)                                   Averaging time (minutes)
             300 – 1500                            f (MHz) /1500                                                  30
          1500 – 100.000                                 1.0                                                      30


Based on the above table the limits are:

For 850 MHz frequency band device: 0.57 mW/cm2
For 1700 /1900 MHz frequency band device: 1 mW/cm2

FCC § 2.1091 / IC RSS102, section 2.5.2
The limit for 850 MHz mobile operations where no routine evaluation is required is: 1.5W ERP
The limit for 1700 / 1900 MHz mobile operations where no routine evaluation is required is: 3W EIRP

Max permissive power according to §24.232 and RSS133: 2W EIRP
Max permissive power according to §§22.913(a) and RSS132: 7W ERP


Using the equation from page 19 of OET Bulletin 65, Edition 97-01:

                                                                                     PG
                                                                            S =
where: S = power density (in appropriate units, e.g. mW/cm2)                         π
                                                                                   4 R     2

P = power input to the antenna (in appropriate units, e.g., mW)
G = power gain of the antenna in the direction of interest relative to an isotropic radiator
R = distance to the center of radiation of the antenna (appropriate units, e.g., cm)




850 MHz frequency band
Maximum output power considerations:


                     M   i
                     Maximum
                                                                                                              Equivalent conducted output
                     conducted         Maximum conducted output power
      Mode                                                                               Duty cycle            power (Maximum conducted
                    output power                   (W)
                                                                                                             output power x duty cycle) (mW)
                       (dBm)
     GPRS                 32,67                        1,849                               50%                            925
     EDGE                 27,3                         0,537                               50%                            269
     WCDMA                23,15                        0,207                               100%                           207




P                         p
                  Maximum power   p to the antenna:
                                input                                                                  925 mW
R                 Distance:                                                                             20 cm
                                                                                                                  2
S                 MPE limit for uncontrolled exposure:                                                 0,57 mW/cm


G1                Antenna gain (dBi) to comply with MPE limits:                                        4,91 dBi




ERP power limit according to §2.1091:                                                                  1,50 W ERP


G2                Antenna gain (dBi) to comply with ERP limits:                                        4,25 dBi

                  (ERP[dB] = Maximum conducted output power [dB]x Antenna gain [dBi]-2,15)




ERP power limit according to §22.913:                                                                  7,00 W ERP


G3                Antenna gain (dBi) to comply with ERP limits:                                        7,93 dBi

                  (ERP = Maximum conducted output power x Antenna gain / 1,64)


G850 MHz band     Min (G1, G2, G3)                                                                     4,25 dBi
Therefore the maximum antenna gain for mobile operation to comply with MPE and ERP limits shall not exceed:                                    4,25 dBi




MPE_LISA_U200.xlsx                                                                                                                                        1/2


1900 MHz frequency band
Maximum output power considerations:


                   Maximum
                                                                                                    Equivalent conducted output
                   conducted        Maximum conducted output power
      Mode                                                                      Duty cycle           power (Maximum conducted
                  output power                  (W)
                                                                                                   output power x duty cycle) (mW)
                     (dBm)
     GPRS             30,27                         1,064                          50%                          532
     EDGE             26,47                         0,444                          50%                          222
     WCDMA            23,73                         0,236                         100%                          236




P                Maximum power input to the antenna:                                         532 mW
R                Distance:                                                                    20 cm
                                                                                                        2
S                MPE limit for uncontrolled exposure:                                        1,00 mW/cm


G1               Antenna gain (dBi) to comply with MPE limits:                               9,75 dBi




ERP power limit according to §2.1091:                                                        3,00 W ERP


G2               Antenna gain (dBi) to comply with ERP limits:                               9,66 dBi

                 (ERP[dB] = Maximum conducted output power [dB]x Antenna gain [dBi]-2,15)




ERP power limit according to §24.232                                                         2,00 W EIRP


G3               Antenna gain (dBi) to comply with EIRP limits:                              2,74 dBi

                 (EIRP = Maximum conducted output power x Antenna gain )


G1900 MHz band   Min (G1, G2, G3)                                                            2,74 dBi


Therefore the maximum antenna gain for mobile operation to comply with MPE and EIRP limits shall not exceed:                         2,74 dBi




MPE_LISA_U200.xlsx                                                                                                                              2/2



Document Created: 2012-05-25 14:00:45
Document Modified: 2012-05-25 14:00:45

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