The Effective Isotropically Radiated Power calculator converts an EIRP, Effective Isotropically Radiated Power, measured in mw (milliwatt) to the unitless ratio of dBm (ratio of decibel to 1 milli-unit).
INSTRUCTIONS: Choose units and enter the following:
Effective Isotropically Radiated Power (EIRP): The calculator return the power ratio in dB.
The ratio of the measured power to the reference value is defined as:
`N_dB = 10* log10( P_"(measured)"/ P_"(ref)")`
When the ratio of the measured value to the reference value were a thousand, we might us the notation that:
`N_"dBm" = k_"dBm" = 10*log_10(P_"mW"/(1"mW"))`