RF EIRP Calculator dBm / W
EIRP (dBm) = Tx power (dBm) + Antenna gain (dBi) – cable loss (dB)
EIRP Calculator – Effective Isotropic Radiated Power
The EIRP Calculator helps you determine the total radiated power of a transmitter system after considering antenna gain and transmission losses. EIRP (Effective Isotropic Radiated Power) is a critical parameter in RF planning, telecom network design, satellite communication, and wireless system analysis.
Whether you are working in LTE, 5G, microwave links, or Wi-Fi deployment, calculating EIRP ensures regulatory compliance and proper coverage planning.
What is EIRP?
Effective Isotropic Radiated Power (EIRP) represents the total power radiated by an antenna in a specific direction compared to an ideal isotropic antenna.
It includes:
- Transmitter output power
- Antenna gain
- Cable/connector losses
EIRP tells us how strong the signal effectively radiates into space.
EIRP Formula
$$ \text{EIRP (dBm)} = \text{Tx Power (dBm)} + \text{Antenna Gain (dBi)} - \text{Cable Loss (dB)} $$
$$ \text{EIRP (W)} = 10^{\frac{\text{EIRP(dBm)} - 30}{10}} $$
EIRP (dBm) = Tx Power (dBm) + Antenna Gain (dBi) - Cable Loss (dB)