VSWR (Voltage Standing Wave Ratio)

Voltage Standing Wave Ratio (VSWR) is a measure of how well energy is transmitted through a radio frequency (RF) system, such as an antenna and its feedline. It compares the maximum and minimum voltages along the line caused by reflections of signals. A VSWR of 1:1 indicates perfect transmission with no reflections, while higher ratios suggest energy is being lost or reflected back, which can lead to reduced performance. Keeping VSWR low is important for efficient signal transmission and to avoid damage to equipment.