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Vector Network Analyzer

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mountainman:
Hi,

haven't yet seen a EEVBlog where VNAs are explained.

I know how to use one to adapt a antenna (They spit out the smith chart and the bandwith chart i need), but i've never understood how they actually do the measurement.  :-//
AFAIG (As far as i'd guess) they're a more or less a high frequency LCR meter. Pls correct me if i'm wrong.

Would be great to have a few episodes on these:
- How to use em
- How they actually do work
- A teardown of a VNA

Professional VNAs
http://www.keysight.com/de/pcx-x2015001/network-analyzers?cc=DE&lc=ger&tab=x901102
https://www.anritsu.com/en-US/test-measurement/devices-components/vector-network-analyzer
https://www.rohde-schwarz.com/us/products/test-measurement/network-analyzers/pg_overview_64043.html

The poor man's VNAs
http://pocketvna.com
http://miniradiosolutions.com/

Regards
Mountainman

mcinque:

--- Quote from: mountainman on March 12, 2017, 11:11:59 pm ---Would be great to have a few episodes on these:
- How to use em
- How they actually do work
- A teardown of a VNA

--- End quote ---
Agree, that would be very interesting.

Bicurico:
In the past, I found this very nice reading to understand the differences: http://www.testandmeasurementtips.com/how-spectrum-analyzers-differ-from-network-analyzers/

Regards,
Vitor

brumster:
I'd like to see one used, too, would find this interesting. I've read up a bit anyway but always good to get a Pro's angle...

rx8pilot:
Yes - VNA is such an interesting tool that is tough to wrap your head around. Why it exists, what it can accomplish, the myriad of traps they offer, calibration, interpretation, etc......

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