VSWR & Reflection Coefficient Calculator
Reflection coefficient, VSWR, return loss, mismatch loss and input impedance of a transmission line with a complex load.
How to use the VSWR & Reflection Coefficient Calculator
- Enter or select: Load resistance R_L, Load reactance X_L, Line impedance Z₀, Line length.
- The results (Reflection coefficient |Γ|, Angle of Γ, VSWR, Return loss, Mismatch loss, Power delivered to load, Input impedance Z_in) are calculated instantly as you type.
- Use “Copy link” to share the calculation with the same input values.
Formula
- Γ = (Z_L − Z₀)/(Z_L + Z₀)
- VSWR = (1 + |Γ|)/(1 − |Γ|)
- RL = −20·log₁₀|Γ|
- Z_in = Z₀(Z_L + jZ₀tanβl)/(Z₀ + jZ_L tanβl)