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A receiver has a noise figure of 7 dB, gain of 40 dB, noise temperature is 290 K. then the noise power at the receiver is:

A receiver has a noise figure of 7 dB, gain of 40 dB, noise temperature is 290 K. then the noise power at the receiver is: Correct Answer -47.4 dBm

Noise power at the receiver is given by the expression GkB . G is the gain of the amplifier, TA is the noise temperature. F is the noise figure. Substituting the given values in the above equation, the power output at the receiver in dBm scale is -47.4 dBm.

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