Products > Test Equipment
Smitih Charts, still relevant in 2024?
coppercone2:
also, are you sure you did not come across someone in sales?
its possible they had no idea what a smith chart is, or what that equipment is, but they wanted you to buy it, perhaps you forgot to low ball them first. This way, if they say whatever you are interested in is obsolete and no one uses it anymore, they can sell you the thing that they have.
Does that sandwich have tomato on it? No, there is no tomato on it. Dieticians said that tomato is bad for you, this sandwich is fine. Seat warmers? No one ever uses that, its the least used features in cars, believe me im a car salesman. Saul goodman montage moment.
Wallace Gasiewicz:
--- Quote from: RoGeorge on June 23, 2024, 07:40:09 am ---My question is, does anybody knows any model of a VNA that does not have Smith chart representation?
Name it please. Asking because I'm not much into RF, and don't know what instruments are out there. It is a genuine question, not rhetorical. If it exists, I'll be curious to look at such an instrument's specs/manual.
--- End quote ---
I cannot find one, still looking.....
--- Quote from: pdenisowski on June 22, 2024, 09:26:54 am ---Quote from: bson on Yesterday at 02:18:26 am
I don't understand what a Smith Chart really helps with - and never felt I needed one.
I feel like I've always missed something here...
Explain it like I'm 5 please?
--- End quote ---
When I first released my "Understanding the Smith Chart" video I had numerous engineers (privately!) tell me "I've been in RF for X years / decades and I never understood what the Smith Chart was for"
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Is that a Smith Chart I see in your Signature?
I have used my VNA to help me when I was building a Mag Loop Antenna.... Just one example
The Smith Chart Function helps a lot when evaluating the freq range of antenna when you wear out your slide rule, It gives a nice visual to represent your "Network" frequency response. The Smith Chart Function is included in lesser test equipment like antenna analyzers. Extremely useful. The chart is included in the material to be studied for HAM license testing.
pdenisowski:
--- Quote from: Wallace Gasiewicz on June 23, 2024, 01:43:13 pm ---Is that a Smith Chart I see in your Signature?
--- End quote ---
Yes :) I was looking for a "logo" to use and thought that nothing says "RF Test and Measurement" quite as clearly and unambiguously as a Smith chart :)
It's actually a redraw of part of a mural at the R&S headquarters in Munich
pdenisowski:
--- Quote from: RoGeorge on June 23, 2024, 07:40:09 am ---My question is, does anybody knows any model of a VNA that does not have Smith chart representation?
Name it please. Asking because I'm not much into RF, and don't know what instruments are out there. It is a genuine question, not rhetorical. If it exists, I'll be curious to look at such an instrument's specs/manual.
--- End quote ---
I'd like to know this too. Not sure if it counts as a "VNA" or not*, but I have a vector voltmeter that only has two meter type indicators :)
*I would say it doesn't count, especially because it lacks sources, directional couplers, etc. but it can simultaneously measure magnitude and phase ....
gf:
--- Quote from: pdenisowski on June 23, 2024, 02:45:59 pm ---Not sure if it counts as a "VNA" or not*, but I have a vector voltmeter that only has two meter type indicators :)
*I would say it doesn't count, especially because it lacks sources, directional couplers, etc. but it can simultaneously measure magnitude and phase ....
--- End quote ---
If it does not measure and report the network parameters (such as Z-, y-, h-, S-parameters, etc.) of a N-port DUT, then I would not call it VNA.
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