Convert VSWR, return loss, reflection coefficient, reflected power, and mismatch loss.
The reflection coefficient is a magnitude; phase is not included.
Enter the parameters and run the calculation to see results and model assumptions here.
Formulas, variables, and model boundaries are published. References last reviewed on 2026-08-28.
These equations directly produce the primary results and define the tool’s core model.
2|Γ| = (VSWR − 1) / (VSWR + 1)Converts the maximum/minimum standing-wave voltage ratio to the reflected/incident wave amplitude ratio.
RL = −20 log₁₀|Γ|Higher return loss indicates a smaller reflected-wave amplitude.
Derive units, levels, and supporting engineering quantities from the core values.
3VSWR = (1 + |Γ|) / (1 − |Γ|)As the reflection coefficient approaches 1, VSWR approaches infinity.
Pᵣ / Pᵢ = |Γ|²For linear waves with the same reference impedance, the power ratio is the square of the voltage-wave amplitude ratio.
ML = −10 log₁₀(1 − |Γ|²)Represents available-power loss caused only by load mismatch.
Results use the models and assumptions shown on this page for design estimates and pre-compliance risk review. Complex structures, dispersion, near-field coupling, and test setup can cause significant deviation.
VSWR = (1 + |Γ|) / (1 − |Γ|). For example, |Γ| = 0.2 gives VSWR = 1.5, or about 14 dB return loss.
VSWR ≤ 1.5 (return loss ≥ 14 dB) is usually considered a good match; VSWR ≥ 2 (return loss ≤ 9.5 dB) deserves attention.
RL(dB) = −20·log₁₀|Γ|, and the reflected power fraction is |Γ|². A 10 dB return loss means 10% of the power is reflected.
These tools support design-stage estimates. For accredited EMC testing, compliance decisions, and troubleshooting, contact us.