VNA (Very Nice Application)

Probably nobody appreciates modern computational devices more than someone who’s done it the hard way for a very long time. A while back (Feb. 2020), we talked a bit about SPICE circuit modeling and how it has greatly simplified complex circuit analysis for both passive and active circuits. As I’ve suggested a number of times, computer modeling is no substitute for genuine thought, but in concert with an “old school understanding” of analog principles, it can be a powerful tool in countless applications.

One of the most welcome developments in the past couple of years has been the advent of the (VNA), or more astoundingly, the VNA. I first became acquainted with a VNA a little