Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!newstop!exodus!flush.Eng.Sun.COM!dauber
From: dauber@flush.Eng.Sun.COM (Jeff Dauber)
Newsgroups: comp.lsi.cad
Subject: Capacitance extraction with dracula
Message-ID: <5916@exodus.Eng.Sun.COM>
Date: 15 Jan 91 01:10:14 GMT
Sender: news@exodus.Eng.Sun.COM
Organization: Sun Microsystems, Mt. View, Ca.
Lines: 12


I am trying to extract capacitances using dracula and I have come up
with a problem concerning fringe capacitances.  Currently the method
that I am using concerns oversizing each of the layers by some "fudge"
factor and then extracting the capacitances in the usual fashion.  The
problem comes in when I try and use this technique with our new
process.  Fringing is so significant that when we oversize our layers,
they merge into one big layer.  I cannot think of a way around this
using dracula, and was wondering if anyone had any suggestions.


Jeff