1.) A communication system is defined below: Transmitter Power: = 45 dBm; Frequency = 1 GHz Transmit Antenna: Gain = 12 dB, height above ground = 50 meters; Receive Antenna: Gain = 6 dB, height above ground= 2.5 meters Find the received power (in dBm) at a range of 4 kilometers: a. using the free-space range equation b. using the near-earth range equation Using the results of the calculations in a & b above: c. determine the best prediction of the received power (in dBm) at the 4 kilometer range. 2.) A transmitter operating at 80 MHz has an output power of 1.5 kW which is fed to an antenna with a gain of 20 dB. Determine the "keep-out" distance (in meters) required to meet the safety standard.
1.) A communication system is defined below:
Transmitter Power: = 45 dBm; Frequency = 1 GHz
Transmit Antenna: Gain = 12 dB, height above ground = 50 meters;
Receive Antenna: Gain = 6 dB, height above ground= 2.5 meters
Find the received power (in dBm) at a range of 4 kilometers:
a. using the free-space range equation
b. using the near-earth range equation
Using the results of the calculations in a & b above:
c. determine the best prediction of the received power (in dBm) at the 4 kilometer range.
2.) A transmitter operating at 80 MHz has an output power of 1.5 kW which is fed to an antenna with a gain of 20 dB. Determine the "keep-out" distance (in meters) required to meet the safety standard.
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