How to compute each layer’s differential impedance in Via?
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Hi,
I am simulating via model, and I would like know how to compuete differential via impedance each layer. We can use the exisiting example projejct \Examples\HFSS 3D Layout\Signal Integrity\Diff_Via.aedt. There are two signal vias(postive/negative) and 2 ground vias. We delete ground vias, and the design is simpler.
There are total 12 signal layers, and I like to know how to compuate each differential impedance of via pads.
Which port I have to use and how to setup? And, how to compuate each differential impedance after simulation?
Thanks!
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