SWR/Return Loss Measurements Using System IIA

SWR/Return Loss Measurements Using System IIA

Both SWR and Return Loss are a measure of the divergence of a microwave device from a perfect impedance match, for example, 50 W. They are mathematically interchangeable and result from scalar measurements, which are required for a number of reasons. For instance, it is necessary to make sure that devices meet their specifications, one of which is SWR. Also, modern measurement practice dictates the calculation of a quantitative accuracy value, which is affected by SWR at the port of a microwave device.