EXHIBIT B Radiation Hazard 2

0640-EX-ST-2004 Text Documents

General Dynamics SATCOM Technologies, Inc.

2004-11-12ELS_68002

RF Radiation Safety Calculations Spreadsheet Copyright by Tim Shroyer, TriPoint Global 2004 RF Safety Calculations based on OET Bulletin 65 for Parabolic Reflectors. Calculations are based on Bulletin 65 Equations 11 through 18. Input Values Frequency of Operation 14200 MHz Reflector Diameter 2.4 Meters Gain of Antenna 49.2 dBi Input Power to Antenna 2.17 Watts Power Density At Antenna Surface (From Bulletin 65 Equation 11) 2 Maximum Power Density At Antenna Surface = 1.92 W/m 2 Maximum Power Density At Antenna Surface = 0.19 mW/cm 2 Maximum Power Density At Antenna Surface = -7.17 dBW/cm Is this Compliant With Limits? For Occupational/Controlled Exposure (5 mW/cm2)= YES For General Population/Uncontrolled Exposure (1 mW/cm2)= NO Power Density in the Near-Field Region Extent of the Near-Field = 21.70 Meters (From Bulletin 65 Equation 12) Aperture Efficiency = 0.653 Units (From Bulletin 65 Equation 14) 2 On-Axis Near-Field Power Density = 1.25 W/m 2 (From Bulletin 65 Equation 13) 0.13 mW/cm Is this Compliant With Limits? For Occupational/Controlled Exposure (5 mW/cm2)= YES For General Population/Uncontrolled Exposure (1 mW/cm2)= YES Power Density in the Transition Region Beginning of Far-Field Region = 163.58 Meters (From Bulletin 65 Equation 16) Transition Region Power Density (From Bulletin 65 Equation 17) In the Transition Region, Power Density varies from

2 Power Density = 0.13 mW/cm at 21.70 Meters 2 Power Density = 0.02 mW/cm at 163.58 Meters Is the Full Transition Region Compliant With Limits? For Occupational/Controlled Exposure (5 mW/cm2)= YES For General Population/Uncontrolled Exposure (1 mW/cm2)= YES At What Range Is Power Density Compliant With Limits? For Occupational/Controlled Exposure (5 mW/cm2)= 0.54 Meters For General Population/Uncontrolled Exposure (1 mW/cm2)= 2.72 Meters Power Density in the Far-Field Region Far-Field Starts at = 163.58 Meters 2 Power Density at the start of Far-Field Region = 0.05 mW/cm (From Bulletin 65 Equation 18) At What Range Is Power Density Compliant With Limits? For Occupational/Controlled Exposure (5 mW/cm2)= 16.95 Meters For General Population/Uncontrolled Exposure (1 mW/cm2)= 37.90 Meters


Document Created: 2019-10-30 18:42:57
Document Modified: 2019-10-30 18:42:57
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC