Subject: [IBIS] SI tool for a particular layer stackup
From: Craciun, Liviu-Dumitru (LCraciun@Becker.de)
Date: Fri Mar 22 2002 - 00:49:10 PST
Hi,
I have to simulate 8-layer PCBs with a particular stackup:
TOP ===== ==== ==============GND Plane with DISCONTINUITY
Dielectric 1
INNER 1 == == == == == == == SIGNALs
Dielectric 2
INNER 2 == == == == == == = SIGNALs
Dielectric 3
INNER 3 =============================CONTINUOUS GND Plane
........
etc ....
IMPORTANT:
TOP-Layer has a GND plane with many and relativ great discontinuities
thickness dielectric 1 and 2 = 0,050 mm !
thickness dielectric 3 = 0,350 mm ! !
Conclusion: a signal traces has partial 2 reference planes (0,050 mm and
0,400 mm),
partial only one reference plane (0,400 mm).
Yes, I know, there is better solutions. But I have to simulate also THIS
solution.
What Signal Integrity toll have you attended that are worthwhile
to simulate this particular structure ?
Thanks for your time.
Best regards
Liviu Craciun
HARMAN / BECKER AUTOMOTIVE SYSTEMS
______________________________________________________
Becker GmbH - Im Stöckmädle 1 - 76307 Karlsbad - Germany
Dipl.- Ing. Liviu Craciun
product engineering group
PDE-HW2, Produktentwicklung Hardware
phone: +49 (0) 7248 - 71 - 1614
fax: +49 (0) 7248 - 71 - 1205
eMail: LCraciun@Becker.de
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