Exercise 2 A synchronous orbit satellite communication system consists of a ground station with an antenna of gain G, =

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Exercise 2 A Synchronous Orbit Satellite Communication System Consists Of A Ground Station With An Antenna Of Gain G 1 (48.42 KiB) Viewed 13 times

Exercise 2 A synchronous orbit satellite communication system consists of a ground station with an antenna of gain G, = 54 dBi and a satellite with an antenna of gain G2 = 36 dBi. The distance between the ground station and the satellite is 37,132 km. The frequency of the uplink (when the ground station transmits to the satellite) is f = 14 GHz. The frequency of the downlink (when the satellite transmits to the ground station) is f = 12 GHz. Assume the gains of the antennas to remain the same for both frequencies. a) Determine the minimum transmit power of the ground station necessary for the received power at the satellite to be greater than -85 dBW b) Determine the minimum transmit power of the satellite necessary for the received power at the ground station to be greater than -94 dBW. c) Why would a link designer choose the down-link frequency to be smaller than the uplink?