Attachment 2 74cm

0051-EX-ML-2004 Text Documents

Hughes Network Systems, Inc.

2004-08-12ELS_66964

RADIATION CALCULATIONS FOR 0.74 meter EARTH STATION Nomenclature Formula Value Unit INPUT PARAMETERS M = Antenna Aperture Major Axis 0.98 meters m = Antenna Aperture Minor Axis 0.56 meters w = Major Axis of Feed Mouth 0.065 meters h = Minor Axis of Feed Mouth 0.042 meters P = Max Power into Antenna 4.0 Watts n = Apperture Effeciency 67% k = Wavelength @ 30 GHz 0.0100 meters CALCULATED VALUES A = Area of Reflector PIxMxm/4 0.431 meters^2 l = Length of Near Field M^2/4k 24 meters L = Beginning of Far Field 0.6M^2/k 58 meters G = Antenna Gain @ 30 GHz n(4xPIxA)/k^2 36,295 (45.6) dBi a = Area of Feed Mouth PIxwxh/4 0.002 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 2.49 < FCC MPE Limit 2 Far Field GP/(4(PI)L^2) 0.35 < FCC MPE Limit 3 Transition <= Nr Fld Region 2.49 < FCC MPE Limit 4 Near Reflector Surface 4P/A 3.71 < FCC MPE Limit 5 Between Reflector & Ground P/A 0.93 < FCC MPE Limit 6 Between Reflector and Feed 4P/a 737.4 > FCC MPE Limit (See Attachment 1)


Document Created: 2004-08-10 13:41:43
Document Modified: 2004-08-10 13:41:43
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC