VSWR Calculator (Forward and Reflected Power)
Use this tool to determine the Voltage Standing Wave Ratio (VSWR) of an RF transmission line based on forward and reflected power measurements in milliwatts, watts, or dBm.
VSWR: 1:1
Formula:
VSWR = (1 + √(Pr/Pf)) / (1 - √(Pr/Pf))
Where:
- Pf = Forward Power (W)
- Pr = Reflected Power (W)
Common VSWR Reference Points:
- VSWR 1.0:1 = Perfect match
- VSWR 1.5:1 = Good match
- VSWR 2.0:1 = Acceptable
- VSWR 3.0:1 = Significant mismatch
This tool helps with:
Evaluating transmission line efficiency by calculating VSWR.
Diagnosing impedance mismatches and optimizing RF system performance.
Identifying issues such as faulty components or excessive signal reflections.
Last updated on May 27, 2025 by IBL-Editors Team
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