Attachment Attachment D

This document pretains to SES-AMD-20190221-00309 for Amended Filing on a Satellite Earth Station filing.

IBFS_SESAMD2019022100309_1627782

                             RADIATION HAZARD CALCULATIONS FOF               10.0 meter EARTH STATION


              Nomenclature                Formula                   Value    Unit


        INPUT PARAMETERS

D = Antenna Diameter                                                  10.00 meters

d = Diameter of Feed Mouth                                           0.029   meters

P = Max Power into Antenna                                             200 Watts


n = Apperture Effeciency                                              49%

k =Wavelength@ 29.1GHz                                              0.0103   meters


      CALCULATED VALUES

A = Area of Reflector                     PI*DA2J4                 78.540    metersA2

I= Length of Near Field                    DA2J4k                    2425    meters

L = Beginning of Far Field                0.6DA2Jk                   5820    meters

G = Antenna Gain @ 28.6 GHz              n(PI*D/k)A2             4,550,899 66.6 dBi


a= Area of Feed Mouth                     Pl*dA2J4                 0.0007    metersA2


               POWER DENSITY CALCULATIONS


                                              Maximum Power Density in Region
                 Region                                                                    Hazard Assessment
                                          Formula             Value (mW/cmA2)       (FCC MPE Limit= 5 mW/cmA2)


1 Near Field                               4nP/A                      0.50             < FCC MPE Limit

2 Far Field                             GP/(4(PI)LA2)                 0.21              < FCC MPE Limit

3 Transition                           <= Nr Fld Region               0.50              < FCC MPE Limit

4 Near Reflector Surface                    4P/A                      1.02             < FCC MPE Limit

5 Between Reflector & Ground                 PIA                      0.25             < FCC MPE Limit

6 Between Subreflector and                  4P/a                 121116.7             >FCC MPE Limit
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                              RADIATION HAZARD CALCULATIONS FOR               10.0 meter EARtH STATION


              Nomenclature                 Formula                   Value    Unit



       INPUT PARAMETERS

0 • Antenna Diameter                                                  10.00 meters

d • Diameter of Feed Mouth                                           0.029    meters

P ,. Max Power into Antenna                                             200 Watts


n = Apperture Effeciency                                               49%

k,. Wavelength @ 51.4 GHz                                           0.0058 meters


      CALCULATED VALUES

A • Area of Reflector                      PI*D"2/4                 78.540    meters"2

I• Length of Near Field                     D"214k                    4284    meters

L,. Beginning of Far Field                 0.6D"2/k                 10281 meters

G • Antenna Gain @ 51.4 GHz               n(PI*D/k)"2           14,198,336 71.5 dBi


a • Area of Feed Mouth                     Pl*d"214                 0.0007 meters"2


                POWER DENSITY CALCULATIONS


                                               Maximum Power Density in Region
                 Region                                                               Hazard Assessment
                                           Formula             Value (mW/cm"2) (FCC MPE Limit • 5 mW/cm"2)


1 Near Field                                4nP/A                      0.50            < FCC MPE Limit

2 Far Field                              GP/(4(PI)L"2)                 0.21            < FCC MPE Limit

3 Transition                            <= Nr Fld Region               0.50            < FCC MPE Limit

4 Near Reflector Surface                     4P/A                      1.02            < FCC MPE Limit

5 Between Reflector & Ground                  PIA                      0.25            < FCC MPE Limit

6 Between Subreflector and                   4P/a                 121116.7           >FCC MPE Limit
 Feed
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Document Created: 2019-02-19 16:51:25
Document Modified: 2019-02-19 16:51:25

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