- #1
yefj
- 114
- 2
Hello, I am using VNA with ifbw=3KHz span 10MHz to 70GHZ step 10MHz.
I am measuring differential lines SDD11 for TDR uding IFFT.
If my IFFT TDR windows is 100ns then an event in 120ns will go to -20ns thus will create causality issue.
Anothe cause I know is deembeding creating ringing ,but i am not doing deembeding.
But this is all good in theory. In the lab what could cause causality issues in the s-params? how can I handle them?
Thanks.
I am measuring differential lines SDD11 for TDR uding IFFT.
If my IFFT TDR windows is 100ns then an event in 120ns will go to -20ns thus will create causality issue.
Anothe cause I know is deembeding creating ringing ,but i am not doing deembeding.
But this is all good in theory. In the lab what could cause causality issues in the s-params? how can I handle them?
Thanks.