[SI-LIST] SI tool for a particular layer stackup
- From: "Craciun, Liviu-Dumitru" <LCraciun@xxxxxxxxx>
- To: "'si-list@xxxxxxxxxxxxx'" <si-list@xxxxxxxxxxxxx>
- Date: Fri, 22 Mar 2002 09:50:22 +0100
Hi,
=20
I have to simulate 8-layer PCBs with a particular stackup:
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TOP =3D=3D=3D=3D=3D =3D=3D=3D=3D =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3DGND Plane with DISCONTINUITY
Dielectric 1
INNER 1 =3D=3D =3D=3D =3D=3D =3D=3D =3D=3D =3D=3D =3D=3D =
SIGNALs
Dielectric 2
INNER 2 =3D=3D =3D=3D =3D=3D =3D=3D =3D=3D =3D=3D =3D =
SIGNALs
Dielectric 3
INNER 3 =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3DCONTINUOUS GND Plane
........
etc ....
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=20
IMPORTANT:=20
TOP-Layer has a GND plane with many and relativ great =
discontinuities
thickness dielectric 1 and 2 =3D 0,050 mm !
thickness dielectric 3 =3D 0,350 mm ! !
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Conclusion: a signal traces has partial 2 reference planes (0,050 mm =
and
0,400 mm),
partial only one reference plane (0,400 mm).=20
Yes, I know, there is better solutions. But I have to simulate also =
THIS
solution.
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What Signal Integrity toll have you attended that are worthwhile=20
to simulate this particular structure ?
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Thanks for your time.
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Best regards=20
Liviu Craciun=20
HARMAN / BECKER AUTOMOTIVE SYSTEMS=20
______________________________________________________=20
Becker GmbH - Im St=F6ckm=E4dle 1 - 76307 Karlsbad - Germany=20
Dipl.- Ing. Liviu Craciun=20
product engineering group=20
PDE-HW2, Produktentwicklung Hardware=20
phone: +49 (0) 7248 - 71 - 1614=20
fax: +49 (0) 7248 - 71 - 1205=20
eMail: LCraciun@xxxxxxxxx=20
=20
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