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Author Topic: Video: Visualizing the operation/function of an antenna tuner...  (Read 641 times)

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Offline w2aew

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My latest video shows how the Smith chart on a VNA can be used to visually see the operation & function of a typical transmatch (antenna tuner):


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YouTube channel: http://www.youtube.com/w2aew
FAE for Tektronix
 
The following users thanked this post: SeanB, Kalvin, albert22, xtoffer

Offline MattSR

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Re: Video: Visualizing the operation/function of an antenna tuner...
« Reply #1 on: July 18, 2017, 07:02:48 AM »
Yes please to a further video explaining the Smith chart in more detail (along with transmission lines of course)

Cheers,
Matt
 

Online AF6LJ

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Re: Video: Visualizing the operation/function of an antenna tuner...
« Reply #2 on: August 03, 2017, 10:16:54 AM »
The Smith Chart video will be relatively short, they are fairly simple and very handy.
Sue AF6LJ
Test Equipment Addict, And Proud Of It.
 

Offline w2aew

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Re: Video: Visualizing the operation/function of an antenna tuner...
« Reply #3 on: August 03, 2017, 12:20:00 PM »
The Smith Chart video will be relatively short, they are fairly simple and very handy.

Hmmm - well, if I want to explain what each of the 7 scales of the chart are, plus the 10 or 11 radially scaled axis - that would be a decent length video itself.  Then, explaining how to plot complex values, how they "move" with frequency or added transmission lines - another decent length video.  Of course, then we should talk about impedance matching, using lumped elements and stubs - that's a few more videos...  I've been trying to mentally parse the list of topics to start formulating my videos...
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YouTube channel: http://www.youtube.com/w2aew
FAE for Tektronix
 

Offline xtoffer

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Re: Video: Visualizing the operation/function of an antenna tuner...
« Reply #4 on: August 04, 2017, 06:04:30 AM »
The Smith Chart video will be relatively short, they are fairly simple and very handy.

Hmmm - well, if I want to explain what each of the 7 scales of the chart are, plus the 10 or 11 radially scaled axis - that would be a decent length video itself.  Then, explaining how to plot complex values, how they "move" with frequency or added transmission lines - another decent length video.  Of course, then we should talk about impedance matching, using lumped elements and stubs - that's a few more videos...  I've been trying to mentally parse the list of topics to start formulating my videos...

This sounds like a very good plan :D

I have recently gotten into the RF side of things and I can't stress enough how welcome this would be. I'm not usually very verbal but I like your take on things. Recently watched the reflected pulse coax one.  :-+
 

Online AF6LJ

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Re: Video: Visualizing the operation/function of an antenna tuner...
« Reply #5 on: August 09, 2017, 12:33:55 AM »
The Smith Chart video will be relatively short, they are fairly simple and very handy.

Hmmm - well, if I want to explain what each of the 7 scales of the chart are, plus the 10 or 11 radially scaled axis - that would be a decent length video itself.  Then, explaining how to plot complex values, how they "move" with frequency or added transmission lines - another decent length video.  Of course, then we should talk about impedance matching, using lumped elements and stubs - that's a few more videos...  I've been trying to mentally parse the list of topics to start formulating my videos...
I forgot about all that, being an RF tech I tend to take some things for granted. :)
Sue AF6LJ
Test Equipment Addict, And Proud Of It.
 


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