RF Noise Floor Simulation

Master the formula: P_noise = 10log₁₀(kTB) + NF

Noise Floor: -100 dBm

System Parameters

Bandwidth (B) in MHz 20

Noise Figure (NF) in dB 5

Temperature (T) in Kelvin 290

Calculated Noise Floor

-100.0 dBm

Calculation breakdown will appear here...

Sensitivity Tip

Total Noise Floor represents the point where a signal is buried in noise. A receiver typically needs a signal power higher than this (Signal-to-Noise Ratio) to function.

Parameter Glossary

(k) Boltzmann’s Constant: Fixed at 1.38 × 10⁻²³ J/K. This is the physical constant relating thermal energy to temperature.

(T) Temperature: Measured in Kelvin. Thermal noise is caused by the random movement of electrons; higher heat equals more movement and higher noise. Standard "Room Temp" is 290K.

(B) Bandwidth: The range of frequencies being used. The "wider" your signal, the more total noise power enters the receiver. Doubling bandwidth increases noise by 3dB.

(NF) Noise Figure: A measure of how much noise the electronic components (amplifiers, mixers) add to the signal. An ideal, perfect receiver would have 0dB NF.

(dBm): Decibels relative to 1 milliwatt. This is the standard unit for expressing absolute signal power in RF.

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