[SI-LIST] Re: W Model for transmission lines

Hi Richard,

It is possible to create the W model from the 
trace geometries and material properties.  This
is outlined pretty well in the avanti hspice 
manual within the Using Transmission Lines chapter
(chapter 19 I believe).  You can recreate the 
structure and use the internal field solver to 
create what you need.  I have included two pretty 
well commented models that you can use as a refer
ence along with this chapter to get you moving.
One is a single ended line and one is a coupled 
model.  The later can be used as a diff pair or to
show the effects of coupling between two single 
ended connectors. 

Best of Luck and happy HSpicing.  Feel free to 
drop me a line if you have any other questions.

best regards,

Michael Greim

-----Original Message-----
From: richard hill [mailto:richard2636@xxxxxxxxxx]
Sent: Saturday, September 22, 2001 8:52 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] W Model for transmission lines



Hi,

I am new to the use of transmission line models
in HSPICE.  I would like to create a W Model of
a transmission line.  I am wondering how to derive 
the RLGC parameters to incorporate it in my models.
I am struggling with this since it is not easy as the
U model where you just enter the trace geometry.  If
I know the trace geometry is there an easy way to get
the parameters.

Thanks.





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