Deep Dive into ERP/EIRP Calculations
Introduction
This guide explains how to calculate Effective Radiated Power (ERP) and Effective Isotropic Radiated Power (EIRP).
What are ERP and EIRP?
ERP (Effective Radiated Power):
The amount of power that an antenna radiates, taking into account the antenna gain and cable loss.EIRP (Effective Isotropic Radiated Power):
The amount of power that an antenna would radiate if it were an isotropic antenna (an antenna that radiates power equally in all directions).
Formulas for ERP and EIRP
- EIRP (dBm) = Transmitter Power (dBm) + Antenna Gain (dBi) - Cable Loss (dB)
- ERP (dBm) = Transmitter Power (dBm) + Antenna Gain (dBd) - Cable Loss (dB)
- ERP (W) = EIRP (W) / 1.64
How to Calculate ERP and EIRP
- Determine the transmitter power in dBm or Watts.
- Determine the antenna gain in dBi or dBd.
- Determine the cable loss in dB.
- Use the formulas above to calculate ERP and EIRP.
Why are ERP and EIRP Important?
- They are used to determine the maximum power that a transmitter can radiate.
- They are used to ensure that transmitters comply with regulatory limits.
Related Guides
- RF & Electronics Power Conversion Tool Overview
- How to Use the RF & Electronics Power Conversion Tool
- Understanding RF Power Units and Conversions
- Applications of RF & Electronics Power Conversion Tool
- Understanding VSWR and Return Loss
- Cable Attenuation Explained
Understand ERP/EIRP calculations with this guide!
Use RF & Electronics Power Conversion Tool