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Minimum Detectable Signal MDS Calculator

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Minimum Detectable Signal (MDS) Calculator | RF Sensitivity Tool
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MINIMUM DETECTABLE SIGNAL (MDS)
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Minimum Detectable Signal Power Levels

Minimum Detectable Signal defines the baseline receiver sensitivity threshold where the target incoming signal energy matches cleanly above the combined limits of integrated thermal noise and internal amplifier distortion stages.

Mean Noise Level MDS Level

Formulas & Mathematical Logic

Receiver link budget boundaries combine absolute thermal constraints with hardware noise figure degradation coefficients linearly:

MDS Sensitivity Formulation:
MDS = -174 + 10 * log10(Bandwidth in Hz) + Noise Figure

Where -174 dBm/Hz defines the universal flat thermal noise power density limit across a localized 1Hz bandwidth segment matching standard operational temperatures around 290 Kelvin.

Practical RF Sensitivity Example

Input Parameters

Channel Bandwidth: 10.00 MHz

Noise Figure (NF): 3.50 dB

Determined Sensitivity Threshold

Calculated Receiver MDS: -100.50 dBm

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About this tool

Minimum Detectable Signal MDS Calculator is a free online calculator tool. Use it to get instant, accurate results for your electronics calculations.