नाइक्विस्ट आवृत्ति कैलकुलेटर — सूत्र
## Understanding Return Loss
Return loss measures how much signal is reflected due to impedance mismatch, expressed in positive decibels (higher is better).
### Formulas
**Gamma = (VSWR - 1) / (VSWR + 1)**
**Return Loss = -20 x log10(Gamma) dB**
**Mismatch Loss = -10 x log10(1 - Gamma^2) dB**
### Quick Reference
- 20 dB return loss: 1% power reflected, VSWR 1.22
- 14 dB return loss: 4% power reflected, VSWR 1.50
- 10 dB return loss: 10% power reflected, VSWR 1.92
Return loss measures how much signal is reflected due to impedance mismatch, expressed in positive decibels (higher is better).
### Formulas
**Gamma = (VSWR - 1) / (VSWR + 1)**
**Return Loss = -20 x log10(Gamma) dB**
**Mismatch Loss = -10 x log10(1 - Gamma^2) dB**
### Quick Reference
- 20 dB return loss: 1% power reflected, VSWR 1.22
- 14 dB return loss: 4% power reflected, VSWR 1.50
- 10 dB return loss: 10% power reflected, VSWR 1.92
हल किया गया उदाहरण
A cable assembly has VSWR 1.8:1.
- Gamma = (1.8 - 1) / (1.8 + 1) = 0.8 / 2.8 = 0.2857
- Return loss: -20 x log10(0.2857) = 10.88 dB
- Power reflected: 0.2857^2 x 100 = 8.16%
- Power delivered: 91.84%
- Mismatch loss: -10 x log10(0.9184) = 0.370 dB