// multi-utility computation suite · offline · instant · precise
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eng.link-budget-cellular Calculator
Calculates cellular link budget from transmitter power, antenna gains, path loss model, and required receive sensitivity. Link budget margin (typically 10–15 dB) accounts for shadowing — insufficient margin causes coverage holes and dropped calls.
Inputs
Tx Power Dbm
Rate of energy transfer (W). P = V×I (electrical). P = F×v (mechanical). 1 horsepower ≈ 746 W.
Tx Antenna Gain Dbi
Reference formula or conversion factor shown for context.
Path Loss Db
Reference formula or conversion factor shown for context.
Rx Antenna Gain Dbi
Reference formula or conversion factor shown for context.
Rx Noise Figure Db
Reference formula or conversion factor shown for context.
Results
received power Pr (dBm)
Reference formula or conversion factor shown for context.
EIRP (dBm)
Reference formula or conversion factor shown for context.
noise floor (dBm, 5MHz BW)
Random or irrelevant variation in the measurement.
SNR (dB)
Sample size or count used in the calculation.
link margin (vs -90dBm sensitivity)
Sample size or count used in the calculation.
5G NR minimum SNR
The smallest value in the dataset or feasible range.