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HB convergence problem with SDD

Question asked by A.Raslan on Sep 4, 2013
Latest reply on Sep 5, 2013 by aehoward
Hi,
I'm implementing table based charge source (two dimensional table).
I am using SDD component and a weighting function of one (i.e. I(p,1) where p is the port number). I have no problems when running HB, DC or Sparam simulation.
The problem comes when adding higher order time derivatives ( i.e. H[2] = (j*2*pi*freq)**2  ). 
It doesn't converge in HB (although it converges in both DC and Sparam).
The same problem happens when I used verilog-A component instead of SDD.

Thanks in advance

Edited by: A.Raslan on Sep 4, 2013 4:57 PM  

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