a) The overall Noise Temperature (Te) of a 2- stage cascaded amplifier is given as 1946 deg K. The gain of the first stage is 15 dB and the Noise Temperature (Te1) of the first stage is 1369 deg K....

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Extracted text: a) The overall Noise Temperature (Te) of a 2- stage cascaded amplifier is given as 1946 deg K. The gain of the first stage is 15 dB and the Noise Temperature (Te1) of the first stage is 1369 deg K. (i) Find the Noise Ratio(F2) , Noise Figure (NF2) and the Noise temperature (Te2) of the second stage (ii) Also find the overall output S/N ratio, if the input S/N ratio of the cascaded receiver is 118. Assume the reference temperature is 19 deg C.