This calculator converts a return loss (Return Loss) expressed in dB into a reflection coefficient (Γ). It helps determine the amount of energy reflected in a transmission line in the event of an impedance mismatch.
Useful for RF engineers, antenna technicians and network designers wanting to assess the quality of their connections and minimize signal losses.
Formula
Γ = 10^(-RL/20)
Explanation of the formula
- RL is the return loss in decibels (dB), indicating the proportion of power reflected.
- The formula uses a logarithmic conversion to determine the reflection coefficient in linear form.
- A low value of Γ indicates better impedance matching and therefore minimal loss.
Convert 20 dB return loss to reflection coefficient
Input : RL = 20 dB
Output : Γ = 0.1
Benefits and uses
- Allows you to evaluate the adaptation quality of an RF system.
- Indicates the proportion of power reflected in a transmission line.
- Useful for adjusting antennas, filters and amplifiers.
- Practical for performance analysis of high frequency systems.