THE FEUTEX TOOLKIT

Complex Load Reflection and Mismatch

Evaluate reflected-power fraction and mismatch loss for a complex load on a real line.

Communications workspace● Runs in your browser

01 Your input

Load resistanceohmLoad reactanceohmLine impedanceohm

02 Your result

View or copy raw result data

Result data

FormulaΓ=(ZL−Z0)/(ZL+Z0); mismatch=−10log10(1−|Γ|²)

Sources and model references

https://www.rohde-schwarz.com/us/products/test-and-measurement/essentials-test-equipment/spectrum-analyzers/voltage-standing-wave-ratio-vswr-and-return-loss_258140.html

How to use this tool

Enter the labeled inputs in the indicated units.
Calculate and compare every output against the stated model assumptions.

Try this example

{
  "r": 100,
  "x": 0,
  "z": 50
}

Accuracy and scope

Real positive line impedance and passive positive-resistance load; line attenuation excluded. Simplified analytical model; not a design recommendation or safety certification.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.