Attachment 2 66cm

0051-EX-ML-2004 Text Documents

Hughes Network Systems, Inc.

2004-08-12ELS_66963

RADIATION CALCULATIONS FOR 0.66 meter EARTH STATION Nomenclature Formula Value Unit INPUT PARAMETERS M = Antenna Aperture Major Axis 0.74 meters m = Antenna Aperture Minor Axis 0.59 meters d = Diameter of Feed Mouth 0.029 meters P = Max Power into Antenna 4.0 Watts n = Apperture Effeciency 64% k = Wavelength @ 30 GHz 0.0100 meters CALCULATED VALUES A = Area of Reflector PIxMxm/4 0.343 meters^2 l = Length of Near Field M^2/4k 14 meters L = Beginning of Far Field 0.6M^2/k 33 meters G = Antenna Gain @ 30 GHz n(4xPIxA)/k^2 27,582 (44.4) 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 2.99 < FCC MPE Limit 2 Far Field GP/(4(PI)L^2) 0.81 < FCC MPE Limit 3 Transition <= Nr Fld Region 2.99 < FCC MPE Limit 4 Near Reflector Surface 4P/A 4.67 < FCC MPE Limit 5 Between Reflector & Ground P/A 1.17 < FCC MPE Limit 6 Between Reflector and Feed 4P/a 2422.3 > FCC MPE Limit (See Attachment 1)


Document Created: 2004-08-10 13:40:59
Document Modified: 2004-08-10 13:40:59
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