Vector Network Analyzer (VNA)
Date:2018/7/4 Visits: 542
A Vector Network Analyzer (VNA) is an electrical test instrument that
uses a known Continuous Wave (CW) signal to measure the magnitude and phase
response of Radio Frequency (RF) and microwave components, systems, and
sub-systems in both design and manufacturing applications. It is an important
test instrument that helps make wireless devices possible.
A VNA allows you to measure complex quantities such as reflection
coefficients, impedance, admittance, return loss, insertion loss, gain,
isolation, and much more in a manner that is not possible with other test
instruments.
Traditional test equipment such as power meters, spectrum analyzer, and
oscilloscopes typically only have receivers that are used to measure signals
emitted or created by the Device Under Test (DUT). In contrast, a VNA has both
a source and a set of receivers used to determine changes to the stimulus
caused by the DUT. The stimulus-based test approach allows VNAs to measure very
small reflections and changes to the stimulus enabling you to accurately characterize
any RF component in real-world environment and test conditions.
