[TowerTalk] Test Fixture for Common Mode Chokes

[Brian Beezley]

AB7E said:

"Any thoughts on this text fixture?"

Dave, use the Y21 method instead of the conventional S21 method to 
suppress any shunt capacitance in the test fixture. This S-parameter 
plotter implements both methods. Scroll down to see a comparison of 
results for the two methods for a common-mode choke:

https://k6sti.neocities.org/sp

K6JCA's explanation and derivation of the Y21 method:

https://k6jca.blogspot.com/2020/07/the-y21-method-of-measuring-common-mode.html

Brian