VSWR Calculator

Formula

The formula to calculate the Voltage Standing Wave Ratio (VSWR) is:

\[ VSWR = \frac{V_{max}}{V_{min}} \]

Where:

\( VSWR \) is the Voltage Standing Wave Ratio
\( V_{max} \) is the Maximum Voltage
\( V_{min} \) is the Minimum Voltage

Alternative Formula Using Reflection Coefficient

The formula to calculate the Voltage Standing Wave Ratio (VSWR) using the reflection coefficient (r) is:

\[ VSWR = \frac{1 + r}{1 - r} \]

Where:

\( VSWR \) is the Voltage Standing Wave Ratio
\( r \) is the Reflection Coefficient

What is VSWR?

VSWR stands for Voltage Standing Wave Ratio. It is a measure of how efficiently radio frequency power is transmitted from a source to a load through a transmission line. A lower VSWR indicates better efficiency and less power loss.

Example Calculation

Let's assume the following values:

Maximum Voltage (V_max) = 10 V
Minimum Voltage (V_min) = 2 V

Using the formula to calculate the Voltage Standing Wave Ratio:

\[ VSWR = \frac{10}{2} = 5 \]

The Voltage Standing Wave Ratio is 5.