Amplifier & Receiver
Minimum Detectable Signal Calculator
Find a receiver's noise floor — the smallest signal it can resolve — from its bandwidth and noise figure.
Result
Enter the inputs above and select Calculate.
Formula: MDS = −174 dBm/Hz + 10 · log₁₀(B) + NF
Add the required SNR to get the usable sensitivity for a given demodulator.
The −174 dBm/Hz term assumes a 290 K reference temperature.