[time-nuts] VNA design

[Chris Albertson]

Today you can do most of the processing in software.  All you need is A/D
and D/A converters that can handle the required bandwidth and get the raw
numbers into the computer.   Look up "SDR" type radios and search on the
combination of SDR and VNA and you'll find a few.     Then with the same
hardware you have a VNA, spectrum analyzer, oscilloscope, low power
transceiver and so on.   This idea is somewhat easy through HF.


On Mon, Jun 2, 2014 at 7:43 AM, Attila Kinali <attila at kinali.ch> wrote:

> Hi,
>
> I know this is not exactly a time-nut question, but i guess this is
> the best place i know to ask about this stuff.
>
> I recently got introduced into the usefullness of a VNA. But these
> things are horribly expensive for home use, even if bought from ebay
> (before you say anything, remember i live in europe, where every
> boat anchor hast to travel a long way). But given that most of the
> designs that are on ebay are from the 80s and early 90s, i thought that
> with todays ICs it should be easy to come up with a design that does
> the same thing but can be build on a kitchen table.

-- 

Chris Albertson
Redondo Beach, California