They also have an integrated display and control buttons, to enable them to be conveniently controlled while working off-site. Potential drawbacks are their size, weight and relatively high price.Īnother common type, tailored for field work, is the handheld battery powered VNA, like the Anritsu VNA Master.
The SCPI and VISA libraries of the defined Application Programming Interfaces (APIs) and the control in C++, C#, Python or Matlab make it possible to implement customised measurement solutions beyond those provided by the instrument manufacturer.īy Pavol Polacek, Anritsu Wireless Specialistīench top VNAs, like the Anritsu VectorStar, with an integrated display, a key and/or touch screen user interface, and the ability to run on-device control software, are easy-to-use and suitable for indoor applications such as R&D or device modelling.
A VNA can also be used to measure the directivity of an antenna or the properties of dielectric materials. A vector network analyser is used to measure transmission parameters, crosstalk, distance to fault (DTF) and other parameters. Thus, unlike an SNA, the VNA, a more sophisticated instrument, can check the phase shift as a function of frequency, as well as the gain of an amplifier over a given bandwidth. Unlike scalar array analysers (SNAs), which only measure the amplitude of the return signal, VNAs also measure its phase. To perform a measurement, a signal is transmitted to the Device Under Test (DUT) and the Vector Network Analyzer (VNA) measures the response of the device under test. These versatile instruments are used to characterise RF components, cables and antennas. Vector Network Analyzers (VNAs) are test instruments commonly used in the radio frequency (RF) field both in manufacturing and maintenance sites and in laboratories.
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