[TowerTalk] 4 port network analyzers for balun measurements

[Michael Tope]

On 11/21/2015 8:22 AM, Daniel Danny Horvat wrote:
>>>> 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
>
>
This is a good point. If the cores are sitting close to a ground plane 
will the small asymmetries between the conductors in the bifilar turns 
and the ground plane be large enough to skew the results of a 4 port 
measurement toward a misleading conclusion about balun performance?

73, Mike W4EF..........