How to evaluate the sensitivity level of the receiver?

Question

Radio communication

Good day. How to correctly estimate the level of sensitivity of the receiver, for example, the sensitivity of the receiver is 5 μV in a 6 MHz band. How is this to be interpreted or recalculated to another lane? Or advise the literature where it would be possible to familiarize with it. Thanks in advance.

Answer 1

Your question does not specify another key parameter for evaluation - the ratio of s/n. It would be more correct to do this - the sensitivity of the receiver is 5 μV in a 6 MHz band with a s / w ratio, for example, 1: 1. It is interpreted in this way: the level of noise that the receiver collects in the 6 MHz band does not exceed in total the same 5 μV as the useful signal. Or even cooler: this receiver can recognize a useful signal against the background of noise, the level of which is equal to the signal level (how it does this is another question). If you narrow the frequency band by half, to 3 MHz, then the noise will also drop by half (if their intensity is uniform in frequency), and such a receiver will be able to recognize not 5 μV, but 2.5.
Something like that. I will add to this that the sensitivity in many branches of radio engineering (say, microwave) is set not in microvolts, but in microwatts, respectively, the s / w ratio is not in times, as in my example, but in decibels. But the essence of this does not change.