Re: VNA calibration kit to 50 GHz
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OK, I'll stop after this, I promise!
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I said " So to that end, short sections of flanged waveguide with shorting plates would work."
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Lets make it simpler: I am sure we either own (I do) or have a friend that bought one of those $200 simple CNC milling machines (I know, not great but not bad either). No sweat to put a piece of 1/8 inch thick brass plate in one and mill out some WR-90 endcaps. And mill a little grove beside them to make it easy to cut out with a manual hacksaw or bandsaw.
Then scrounge some nice flanged sections of WR-90 (can cut off some junk) and soft or hard solder the end caps on (after you clean up the cut on the guide of course).
Soft solder was used by WE (Western Electric, sorry, didnt spell out in last message) for the Bell System Long Lines hardware and it works fine but doesnt silver plate as well as silver solder (of course).
Now you can make as many custom length shorts as you want for TRL type cal setups. Hell , you might even be able to copy the length to match a set of cal constants you might find tabulated somewhere!
Thought of this while shaving just now (great time to think!).
Jeff Kruth
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