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Quantus not extracting coupling capacitance between 100um traces 2um apart

Hi! How can I increase the maximum distance for capacitance extraction in Quantus?

In a simple testbench I put two 100um-long metal traces (M8), and if they are 1um apart Quantus extracts the coupling capacitor (~3.3fF), but if they are 2um apart there is no coupling capacitor anymore (while a third-party extraction tool gives ~2fF of coupling for this case).

I tried the "Extend Checking Distance" option mentioned in the manual, but it had no effect.

Thanks and regards,

Jorge.

P.S. I am using the "C only" extraction type with "Coupled" cap coupling mode. My MinC filtering thresholds are set to 0.001fF and 0.01%. Quantus 18.2.1-s210

Andrew Beckett over 6 years ago

Hi Jorge,

Probably best to contact customer support on this one, as it may involve having to discuss details of the technology which we can't do here because of NDA issues.

Regards,

Andrew.
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dontpanic over 6 years ago in reply to Andrew Beckett

OK Andrew, I'll open a case for this!

Thanks and regards, Jorge.
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