Attachment fccradhaz24STS.doc SES-LIC-20110727-00858

Attachment fccradhaz24STS.doc

This document pretains to SES-LIC-20110727-00858 for License on a Satellite Earth Station filing.

IBFS_SESLIC2011072700858_907940

EXHIBIT A - ANALYSIS OF NON-IONIZING RADIATION

EXHIBIT A1 - ANALYSES OF NON-IONIZING RADIATION, 2.4 m Ku
HARMFUL LEVELS OF NON-IONIZING 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 = h = G/(p*D/l)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 = 500 Watts (27.0 dBW)
DISTANCE TO FAR FIELD = 2*D2/l
= 11.52 / 0.0210526
= 547 Meters
ON-AXIS POWER DENSITY = G*P/4*p*Far Field Distance2
= 79,433 * 500 / 12.56637 * 299,209
= 10.56 W/m2
= 1.06 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 * l
= 5.76 / 0.0526315
= 109 Meters
POWER DENSITY AT END OF PARALLEL BEAM REGION
= P / CYLINDRICAL PARALLEL BEAM AREA
= 500 / 4.52
= 110.62 W / m2
= 11.06 mW / cm2

LEVEL IS GREATER THAN THE 5 mW/cm2 MAXIMUM ANSI LEVEL PERMITTED
ANTENNA IS MOUNTED 10’ IN THE AIR ON TRUCK, NO PERSONNEL WILL
OCCUPY THE PARALLEL BEAM REGION DURING OPERATION.

Document Created: 2011-07-27 10:53:36
Document Modified: 2011-07-27 10:53:36

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