[SI-LIST] trouble simulating with AC coupling capacitors in topology

Hi All,
 I am trying to simulate a topology which has AC coupling capacitors in it.

Using Cadence Allegro PCB SI tool set , i am unable to get the expected
output.

but when I simulate the same topology by removing the AC coupling capacitors
in signal path, I get a perfect waveform.

Is this a tool limitation..? can some body suggest me if they have faced
similar issue.


Thank you

Roopesh


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