ReflectionCoefficienttoSWRConverter

How to Use This Calculator

1. Enter the reflection coefficient (Γ) in the input field. The reflection coefficient should be a value between -1 and 1, typically expressed as a decimal (e.g., 0.2 for 20% reflection).
2. Click the "Calculate" button to convert the reflection coefficient to SWR.
3. The calculator will display the Standing Wave Ratio (SWR) value.
4. If you want to start over, click the "Reset" button to clear all inputs and results.

Understanding the Relationship Between Reflection Coefficient and SWR

The reflection coefficient (Γ) represents the ratio of the reflected wave to the incident wave at a boundary in an RF system. The Standing Wave Ratio (SWR) is a measure of impedance matching between a source and a transmission line.

The mathematical relationship between these two parameters is:

SWR = 1 + |Γ| / (1 - |Γ|)

This formula shows that:

• If Γ = 0 (perfect match), then SWR = 1
• If Γ = 1 (complete reflection), then SWR approaches infinity
• For Γ = -1 (also complete reflection), SWR approaches infinity

Practical Applications

This calculator is useful for RF engineers, technicians, and hobbyists working with:

• Antenna systems
• Transmission lines
• Amplifier matching
• Wireless communication systems

A lower SWR value (closer to 1) indicates better impedance matching and less signal reflection, which is desirable in most RF applications.