updated link budget analysis for 1227 and 1575MHz frequencies

0072-EX-PL-2014 Text Documents

MIT Lincoln Laboratory

2014-09-09ELS_153325

Change the values in the yellow boxes to calculate required readings -140 or less at a range of 100 feet to meet NTIA regulations Receive Ant Gain Ant Cable Insertion Loss Repeater Amp Gain Repeater Ant Gain Best Case Range in Feet Repeated Signal Power @ Range In dBm 38 -3 20 3 130 -140.37 GPS Carrier Frequency MHz Total System Gain Range in Miles Total Signal Power @ Range in Watts 1575 58 0.02 9.2E-18 Avg Receive Power L1 dBm North America Range in Meters Radiated Power dBm -130 40.52 -72 Free Space loss with Isotropic Antennas Range in Kilometers Transmitted Power (W) -68.37 0.04 31.6E-12 Effective Radiated Power (W) 63.1E-12 Effective Radiated Power (dBW) -102


Change the values in the yellow boxes to calculate required readings -140 or less at a range of 100 feet to meet NTIA regulations Receive Ant Gain Ant Cable Insertion Loss Repeater Amp Gain Repeater Ant Gain Best Case Range in Feet Repeated Signal Power @ Range In dBm 38 -5 23 3 140 -140.85 GPS Carrier Frequency MHz Total System Gain Range in Miles Total Signal Power @ Range in Watts 1227.6 59 0.03 8.2E-18 Avg Receive Power L1 dBm North America Range in Meters Radiated Power dBm -133 43.64 -74 Free Space loss with Isotropic Antennas Range in Kilometers Transmitted Power (W) -66.85 0.04 20.0E-12 Effective Radiated Power (W) 39.8E-12 Effective Radiated Power (dBW) -104


Change the values in the yellow boxes to calculate required readings -140 or less at a range of 100 feet to meet NTIA regulations Receive Ant Gain Ant Cable Insertion Loss Repeater Amp Gain Repeater Ant Gain Best Case Range in Feet Repeated Signal Power @ Range In dBm 38 -5 22 3 140 -140.43 GPS Carrier Frequency MHz Total System Gain Range in Miles Total Signal Power @ Range in Watts 1575 58 0.03 9.1E-18 Avg Receive Power L1 dBm North America Range in Meters Radiated Power dBm -130 43.64 -72 Free Space loss with Isotropic Antennas Range in Kilometers Transmitted Power (W) -68.43 <- based on below calcs 0.04 31.6E-12 Effective Radiated Power (W) 63.1E-12 Effective Radiated Power (dBW) -102 Freespace loss 20*log10(distance in km * frequency in MHz) + 32.45 distance in km = 0.04 (or 0.04364) frequency in MHz = 1575 (or 1575.42) freespace loss with less significant figures -68.43681099 freespace loss with more significant figures -69.19562193


Change the values in the yellow boxes to calculate required readings -140 or less at a range of 100 feet to meet NTIA regulations Receive Ant Gain Ant Cable Insertion Loss Repeater Amp Gain Repeater Ant Gain Best Case Range in Feet Repeated Signal Power @ Range In dBm 38 -3 21 3 130 -140.21 GPS Carrier Frequency MHz Total System Gain Range in Miles Total Signal Power @ Range in Watts 1227.6 59 0.02 9.5E-18 Avg Receive Power L1 dBm North America Range in Meters Radiated Power dBm -133 40.52 -74 Free Space loss with Isotropic Antennas Range in Kilometers Transmitted Power (W) -66.21 0.04 20.0E-12 Effective Radiated Power (W) 39.8E-12 Effective Radiated Power (dBW) -104



Document Created: 2014-09-09 12:08:14
Document Modified: 2014-09-09 12:08:14
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