VSWR Calculator
The VSWR Calculator is a tool designed to compute the Voltage Standing Wave Ratio (VSWR), a critical parameter in radio frequency (RF) and microwave engineering. VSWR measures the efficiency of power transfer from a transmission line to a load, such as an antenna. A lower VSWR indicates better impedance matching and reduced signal reflection.
Usage Guidance:
- Input the reflection coefficient (Γ) or the forward and reflected power values.
- The calculator will automatically compute the VSWR using the formula: VSWR = (1 + |Γ|) / (1 - |Γ|).
- Alternatively, if power values are provided, the calculator derives VSWR from the ratio of forward to reflected power.
Example Scenarios:
- If the reflection coefficient is 0.5, the VSWR is 3.0.
- If forward power is 50W and reflected power is 5W, the VSWR is approximately 1.92.
Key Parameters:
| Parameter | Description |
| Reflection Coefficient (Γ) | Ratio of reflected to incident voltage. |
| Forward Power (Pfwd) | Power delivered to the load. |
| Reflected Power (Pref) | Power reflected back due to impedance mismatch. |
| VSWR | Ratio of maximum to minimum voltage on the transmission line. |
This calculator is invaluable for RF engineers, antenna designers, and technicians working to optimize signal integrity and minimize power loss in communication systems.