The closest thing that existed like this when I was in college almost a decade ago was an MFJ antenna tuner. It would tell you the impedance at a single frequency, only one port, and that was it. Stopped at... As I recall, 300 MHz. Cost around $250. Anything better was EASILY four figures.

I can buy one today that goes to a GHz or so for under $100, plots a full smith chart, measures both S11 and S21, and even does TDR. Absolutely insane how far things have come.