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Q No. 1 [10] Consider a geostationary Satellite having 28 Ku-band transponders with total saturated power of 2.24 KW, output backoff of 1dB, transponder bandwidth of 54 MHz and satellite antenna gain of 31dB. A receiving earth station with a gain of 20dB and located at the edge of coverage area has LNA noise temperature of 110K and antenna noise temperature of 1K. The minimum permitted C/N is 17.2 dB and rain attenuation is 5 dB for 0.01% of the year. If the Sky temperature is 270 K and Sky noise temperature in clear air is 29 K, Calculate Link budget in clear air. Link budget in case of rain.

          Q No. 1
[10]
Consider a geostationary Satellite having 28 Ku-band transponders with total saturated power of
2.24 KW, output backoff of 1dB, transponder bandwidth of 54 MHz and satellite antenna gain of
31dB. A receiving earth station with a gain of 20dB and located at the edge of coverage area has
LNA noise temperature of 110K and antenna noise temperature of 1K. The minimum permitted
C/N is 17.2 dB and rain attenuation is 5 dB for 0.01% of the year. If the Sky temperature is 270
K and Sky noise temperature in clear air is 29 K, Calculate
Link budget in clear air.
Link budget in case of rain.

Q No. 1
[10]
Consider a geostationary Satellite having 28 Ku-band transponders with total saturated power of
2.24 KW, output backoff of 1dB, transponder bandwidth of 54 MHz and satellite antenna gain of
31dB. A receiving earth station with a gain of 20dB and located at the edge of coverage area has
LNA noise temperature of 110K and antenna noise temperature of 1K. The minimum permitted
C/N is 17.2 dB and rain attenuation is 5 dB for 0.01% of the year. If the Sky temperature is 270
K and Sky noise temperature in clear air is 29 K, Calculate
Link budget in clear air.
Link budget in case of rain.

Added by Seth S.

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