Understanding VSWR and Return Loss

Introduction

This guide explains VSWR (Voltage Standing Wave Ratio) and Return Loss in RF systems.

What are VSWR and Return Loss?

• VSWR (Voltage Standing Wave Ratio): A measure of how well an antenna or load is matched to a transmission line. A VSWR of 1:1 is a perfect match, while a higher VSWR indicates a mismatch.

• Return Loss: A measure of the power reflected back from an antenna or load. A higher return loss indicates a better match.