Re: TDR, VNA and FFT...

Bob wrote:

"Fred Bartoli" <fred._canxxxel_this_bartoli@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message news:45a6c38e$0$292$426a34cc@xxxxxxxxxxxxxxx

Seems simple at first sight.

Apply a sine wave to the DUT through R=Zo
Multiply voltage by 1/(j w)
Take inverse FFT.

The outcome is... uhhh

I must have overlooked something, but what?

...going to bed. Maybe I'll do better tomorrow.

--
Thanks,
Fred.


What are you trying to do?

There is something called frequency domain reflectometry but, with that, you need to sweep the DUT through a range of frequencies.


Yeah, but what's wrong with good old TDR? It's simple and it works.

--
Regards, Joerg

http://www.analogconsultants.com
.

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