Hi Victor,
Thank you for your update and information.
There are different ways to measure CMC performance as there are different 'lumped' component models of a CMC taking account of parasitic elements of a practical or real component.
There is merit in making a test configuration and method for how the component will be used in a particular application. If I were designing and making a CMC filter, I would use a different method of testing to my simple proposal, one very similar to your preferred configuration.
I do not have any rf 1:1 center-tapped baluns so am not able to compare results. If and when you have time to make comparisons, I would be very interested in your findings.
Kind regards
Ed, G8FAX
