From: Ozgur Misman ([email protected])
Date: Wed Nov 22 2000 - 14:42:37 PST
Hi,
I use Pacific Numerix and haven't had any problems. I am not sure how much it
cost, possibly much higher then 600 dollars!. I get characteristic impedance,
mutual and self parasitics, delay, attenuation, skin depth, crosstalk
coefficients. I can use realistic conductor cross sections such as trapezoids
and I verified simulation results with other other tools such as HPMDS
picosecond interconnect modeling suite. The results agree within 2%.
Happy Thanksgiving!
Ozgur Misman
Sr. Engineer
Amkor Technology
Neven Pischl <[email protected]> on 11/22/2000 03:21:07 PM
Please respond to Neven Pischl <[email protected]>
To: [email protected]
cc:
Subject: RE: [SI-LIST] : Linpar 2-D field solver
experiences?
Gary,
Linpar also gives the result as RLCG matrices, plus Zo and even and odd Z
matrices, as well as velocity and attenuation.
The only thing I don't like with Linpar would be if I had to create my own
geometry. I think it is an excellent tool, and to me it is worth much more that
it costs (about $300).
Neven
At 01:25 PM 11/22/00 -0800, Gary Haussmann wrote:
>For standard single or differential tranmission line geometries, I
>prefer
>using linpar over building up a full complicated 3D model. The only
>problem
>I find is that the simulation output is not straightforward, especially
>for
>multiple lines. In my (admittedly old) version, you just get a dump of
>modal voltages and currents and have to interpret--or write a program to
>interpret--the output.
>
>We once did a cross comparison by calculating the characteristic
>impedence
>between linpar, Wheeler's equation for a microstrip, and a 3D field
>solver
>(LC). The three agreed well enough that I don't bother with the
>analytical
>approximation for "standard" linpar configurations, unless I'm
>cross-checking a configuration I haven't used before. Note that I didn't
>rigorously check impedence and crosstalk for buses with 3+ lines, so I
>can't
>comment on how accurately it handles that sort of analysis.
>
>Gary
>
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