Time Domain Measurements Using Vector Network Analyzers

Vector Network Analyzers (VNAs) are very powerful and flexible measuring instruments. Their basic capability is to measure the S-parameters of an RF or microwave device and display the result in the frequency domain. This provides valuable data for the design engineer to develop a design and for the production engineer to substantiate the performance of the device or system. In addition to displaying performance in the frequency domain, Anritsu VNAs offer a Time Domain option to enhance the analysis capability by presenting data in the time (or distance) domain–valuable information for both the design and production engineer. Figure 1 provides the time and frequency response of a microstrip circuit as measured by the MS4640A VNA.