Difference between a Scalar Network Analyser and a Vector Network Analyser

Posted on 19/06/2014
New Test Equipment

Network Analysers (UK English spelling) are RF Tests Sets that measure Insertion and Return Loss (VSWR) on electrical networks. Devices that can be characterised include filters, limiters, cables and switches. Measuring the amplitude response only as opposed to amplitude and phase for Vector Network Analysers, Network Analysers have gradually been phased out of most modern labs.

Vector Network Analysers (VNA’s) measure both amplitude and phase. VNA’s offer significant more functionality and consequently are more expensive. Typically the frequency ranges are 1GHz, 3GHz, 6GHz 20GHz and up to 67GHz

The main integral parts of both varieties are a signal generator, a test set, and a receiver