Contents
Calculator Selector
Impedance Mismatch / SWR Calculator
Impedance mismatch to power losses, impedance mismatch to SWR, and SWR to power losses.
Impedance Mismatch to Power Losses
| + j0 Ω | ||
| Ω | ||
| Ω | ||
| Insertion Loss | dB (S21) | |
| Return Loss | dB (S11) |
ρ = √( ((R1 - Z0)^2 + X1^2) / ((R1 + Z0)^2 + X1^2) )InsertionLoss(dB) = 10·log10(1 - ρ^2)ReturnLoss(dB) = 10·log10(ρ^2)Impedance Mismatch to SWR
| + j0 Ω | ||
| Ω | ||
| Ω | ||
| SWR | to 1 |
ρ = √( ((R1 - Z0)^2 + X1^2) / ((R1 + Z0)^2 + X1^2) )SWR = (1 + ρ) / (1 - ρ)SWR to Power Losses
| to 1 | ||
| Insertion Loss | dB (S21) | |
| Return Loss | dB (S11) |
ρ = (SWR - 1) / (SWR + 1)InsertionLoss(dB) = 10·log10(1 - ρ^2)ReturnLoss(dB) = 10·log10(ρ^2)