Attachment 2

0051-EX-ML-2004 Text Documents

Hughes Network Systems, Inc.

2004-07-30ELS_66817

RADIATION HAZARD CALCULATIONS FOR 3.5 meter EARTH STATION Nomenclature Formula Value Unit INPUT PARAMETERS D = Antenna Diameter 3.73 meters d = Diameter of Feed Mouth 0.031 meters P = Max Power into Antenna 125 Watts n = Apperture Effeciency 56% k = Wavelength @ 30 GHz 0.0100 meters CALCULATED VALUES A = Area of Reflector PI*D^2/4 10.927 meters^2 l = Length of Near Field D^2/4k 348 meters L = Beginning of Far Field 0.6D^2/k 835 meters G = Antenna Gain @ 30 GHz n(PI*D/k)^2 769,066 58.9 dBi a = Area of Feed Mouth PI*d^2/4 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 2.56 < FCC MPE Limit 2 Far Field GP/(4(PI)L^2) 1.10 < FCC MPE Limit 3 Transition <= Nr Fld Region 2.56 < FCC MPE Limit 4 Near Reflector Surface 4P/A 4.58 < FCC MPE Limit 5 Between Reflector & Ground P/A 1.14 < FCC MPE Limit 6 Between Subreflector and 4P/a 68435.3 > FCC MPE Limit (See Attachment 1) Feed


Document Created: 2004-07-30 17:45:01
Document Modified: 2004-07-30 17:45:01
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC