Attachment fccradhaz24nissan.do

This document pretains to SES-LIC-20060801-01294 for License on a Satellite Earth Station filing.

IBFS_SESLIC2006080101294_516293

EXHIBIT A - ANALYSIS OF NON-IONIZING RADIATION HARMFUL LEVELS OF RADIATION WILL NOT EXIST IN REGIONS NORMALLY OCCUPIED BY PERSONNEL. CRITERIA: ANSI SPECIFICATIONS REQUIRE THAT PERSONNEL NOT BE EXPOSED TO LEVELS OF NON-IONIZING RADIATION EXCEEDING 5 mW / cm2. THE FOLLOWING ANALYSES SUPPORT THIS DETERMINATION: FAR FIELD ANALYSIS: EFFICIENCY = η = G/(π*D/λ)2 = 0.605 ANTENNA GAIN = 49.0 dBi (lin 79,433) ANTENNA DIAMETER = 2.4 Meters LAMBDA = 3*108 Meters / 14.25*109 Hz = 0.0210526 POWER MAX AT FLANGE = 40 Watts (16.0 dBW) DISTANCE TO FAR FIELD = 2*D2/λ = 11.52 / 0.0210526 = 547 Meters ON-AXIS POWER DENSITY = G*P/4*π*Far Field Distance2 = 79,433 * 40 / 12.56637 * 299,209 = 0.845 W/m2 = 0.085 mW/cm2 LEVEL IS LESS THAN THE 5 mW/cm2 MAXIMUM ANSI LEVEL PERMITTED NEAR FIELD ANALYSIS (Parallel Beam Region & Transition Region): PARALLEL BEAM REGION ANALYSIS: DISTANCE TO END OF PARALLEL BEAM (CYLINDER) REGION: = DIAMETER2 / 2.5 * λ = 5.76 / 0.0526315 = 109 Meters POWER DENSITY AT END OF PARALLEL BEAM REGION = P / CYLINDRICAL PARALLEL BEAM AREA = 40 / 4.52 = 8.85 W / m2 = 0.089 mW / cm2 LEVEL IS LESS THAN THE 5 mW/cm2 MAXIMUM ANSI LEVEL PERMITTED TRANSITION REGION ANALYSIS: THIS REGION WILL DECREASE INVERSELY WITH DISTANCE BEGINNING AT THE END OF THE PARALLEL BEAM REGION AND REDUCE TO 0.085 mW / cm2

MAIN REFLECTOR ANALYSIS: = P / REFLECTOR AREA = 40 / 4.52 = 8.85 W / m2 = 0.089 mW/cm2 LEVEL IS LESS THAN THE 5 mW/cm2 MAXIMUM ANSI LEVEL PERMITTED FEED TO SUB-REFLECTOR / REFLECTOR ANALYSIS: POWER DENSITY AT FEED FLANGE = P / FEED AREA = 40 / 0.2172 = 184 W/m2 = 18.4 mW/cm2 LEVEL IS GREATER THAN THE 5 mW/m2 MAXIMUM ANSI LEVEL PERMITTED. NO PERSONNEL WILL OCCUPY THE FEED TO SUB TO MAIN REFLECTOR REGION DURING OPERATION. RF POWER WILL BE TURNED OFF DURING ANY ANTENNA MAINTENANCE REQUIRING PERSONNEL TO OCCUPY ANY HAZARDOUS REGION BETWEEN THE FEED HORN, SUB-REFLECTOR, REFLECTOR. PREPARED AND SUBMITTED BY: BASIL F. PINZONE, JR. 08/01/2006 TECHNICAL CONSULTANT


Document Created: 2006-08-02 08:46:31
Document Modified: 2006-08-02 08:46:31
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