Thank you for providing us with this video, Mr. Peterson. i appreciate it. I have a question. The design you showed us on the white board has a stub via from L2 to L4. Instead of having the 10-mil stub via, can we have a 10-mil stub trace on L2 layer that would go to the left hand side of the via?
If you're referring to just placing a stub on a trace it is important to know that these function similar to a via in that they will create strong losses at specific frequencies. This is due to superposition of incoming and reflected frequencies, which is the same explanation we have for stubs on vias. This is exploited in impedance matching for RF circuits and should not be intentionally used in digital interconnects.
Thank you for providing us with this video, Mr. Peterson. i appreciate it.
I have a question.
The design you showed us on the white board has a stub via from L2 to L4.
Instead of having the 10-mil stub via, can we have a 10-mil stub trace on L2 layer that would go to the left hand side of the via?
If you're referring to just placing a stub on a trace it is important to know that these function similar to a via in that they will create strong losses at specific frequencies. This is due to superposition of incoming and reflected frequencies, which is the same explanation we have for stubs on vias. This is exploited in impedance matching for RF circuits and should not be intentionally used in digital interconnects.
Part two!?
Where is via stub and backdrill Part one??
Stubs and Backdrilling in High-Speed Design - Part One
th-cam.com/video/S7iZ6dhYX0U/w-d-xo.html 😊
@@AltiumAcademy
Ah got it! Thanks!!
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