This converter makes it possible to transform the transmitted power of a transmitter and the characteristics of the antenna into standardized EIRP values. It provides results in dBm, dBW and Watts to easily evaluate the transmission efficiency of an RF system.
Formula
EIRP (dBm) = Transmitted power (dBm) – Total losses (dB) + Antenna gain (dBi)
EIRP (dBW) = EIRP (dBm) – 30
EIRP (Watts) = 10^(EIRP (dBm)/10) / 1000
Explanation of the formula
The first equation combines the transmitted power, cable and connector losses, and antenna gain to give the EIRP in dBm. This represents the equivalent power that an isotropic antenna would emit to achieve the same intensity in the direction of maximum gain.
The second formula directly converts this power to dBW to facilitate comparison with systems expressed in watts. Finally, the third formula gives the power in linear units (Watts), useful for energy and electromagnetic compatibility calculations.
Uses
- Evaluate the effective radiated power of an RF transmitter or antenna.
- Compare different antenna configurations to optimize coverage and range.
- Calculate compliance with maximum power standards for wireless transmission.
- Prepare technical reports and document the RF performance of a system.