[time-nuts] DIY VNA design
attila at kinali.ch
Sat Aug 20 22:19:07 EDT 2016
I stumbled over a new open hardware/source VNA design:
Unlike other designs out there, this one is very well done and has very
little room for improvement, without increasing the price considerably.
About the only things i would do different is to use two receiver
channels, one fix connected at the TX source to be able to do a
difference measurement between TX and the RX channels and thus
improving precision. And the other would be to use a dual ADC
with an FPGA for the data processing, again in order to increase
But as I wrote, both changes would increase complexity and price.
Other than being a well thought through design, the website also
explains all the big design choices and why this or that has been
done instead of one of the many alternatives. That alone makes it
worth reading, IMHO.
Any simple idea will be worded in the most complicated way.
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