Answer to Question #301593 in Electrical Engineering for enen

Question

True or false? The noise at the output of a receiver is less than the noise at the input. Explain your answer

Answer 1

True or False? The noise at the output of a receiver is less than the noise at the input. Explain your answer.

It is false.

This is false because there will always be internal noise generated by the receiver components

SNR_IN/SNR_OUT. =1+T_e/T_in >1

In other words, the SNR at the output of the amplifier will be less than the SNR at the input. This result means that the SNR will always be degraded as the signal passes through any component. Consequently, the SNR at the input of a receiver will be the immense value; it will ever be within the receiver. As the signal passes through each module of the receiver, the SNR will get steadily worse.