3 ms·
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 frequen
by bjt2n3904 4y ago
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.
- therein 4y agoStill in the range of hundreds of thousands to millions for equipment to measure a wide range above 6GHz to 100GHz (or even just barely above 60GHz), right? I'd be interested if there is anything cheaper.
- itcrowd 4y agoYes, house-level prices for the equipment. Frequency extenders up to 1.1 THz are available (in rectangular waveguide) or 220 GHz in coaxial.