Cal standard for RF probe
Does anyone know where to get a cal standard for this low-end RF probe? maybe an SOLT but need to include the magical coefficients to make it work on an old HP network analyzer...
I often make my own standards. If I make a patch antenna with a SMA socket on the back, for example, i have SMA as it is - open, SMA shorted and SMA with two 100ohm chips soldered. Doing the cal with the intended cable using these de-embeds the cable and the S-parameters are true at the antenna port. You can do a similar trick to measure the S-parameters of an i.c. right at the input pins using boards such as it will be put on.
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