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[TowerTalk] 4 port network analyzers for balun measurements

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Subject: [TowerTalk] 4 port network analyzers for balun measurements
From: "Daniel Danny Horvat" <danny.e73m@myantennas.com>
Date: Sat, 21 Nov 2015 11:22:57 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
> Just out of curiosity, how do you connect the 4 ports to a Balun, which
> is sort of a 3 terminal device?  Where do the "ground/shield"
> connections go?

You should fixture the balun under test on a ground plane with
4 connectors grounded to that plane.  The 4 analyzer cables go
to these connectors.  You don't connect anything from the DUT
to the ground plane.  Alternately, you can do a 3 port measurement
in which case the unbalanced port goes directly to the analyzer.
Again, the Agilent software walks you through the setup possibilities.


Rick N6RK

>>>Placing an "open" wound 2.4" toroid BALUN on/near a ground plane will
affect the real performance of that BALUN which is not the case with common
"enclosed" binocular BALUNS used in industry.

 Just my $0.02

Danny E73M


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End of TowerTalk Digest, Vol 155, Issue 44
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