Fundamentals and Measurement Guide For Vector Network Analyzer
Vector network analyzer (VNA) is a measuring instrument which is primarily used to measure S parameters which determines RF (radio frequency) performance microwave devices. VNA is also called as a gain phase meter due to the fact that they are able to measure both the gain and phase of the device under test. They were also called Automatic Network Analyzer in the 1970s, even though the most popular term is VNA. Some vendors like Keysight prefer the term PNA, which can refer to Performance Network Analyzers. Nowadays, it is getting popular among power electronic engineers too due to the high accuracy measurements required for control loop stability and impedance measurements. They can be used to characterize active and passive devices. Active devices include amplifiers, opamps, mixers, and tuners. Passive devices includes capacitors, inductors, ferrites and resistors. In general, they can be used to characterize a device with excellent accuracy since the measurements are ba...