Re: [SI-LIST] : signal propagation questions

Ron Miller (rmiller@Brocade.COM)
Thu, 18 Mar 1999 09:46:58 -0800

--------------EA905A565510203556C041E5
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

Hi Guys

This another of those modeling problems which HP Advanced Design System( ADS)
does quite nicely. They have a 2 1/2 D simulator, planar with vias for field solving and
the picosecond modeling suite for modeling with frequency domain models. The time domain
transform (Impulse)is also avialable.

The problem is the cost. ~70k to buy or a lease at 20K per year. Try the website
hp.com/go/hpeesof

Christian Schuster wrote:

> Leesa Noujeim wrote:
> >
> > Should I use a full-wave field solver on the entire
> > structure? Can I partition the problem into two vias
> > and a transmission line, solve statically, then use
> > spice? Or can I use some closed-form approximations?
> >
> > All suggestions are most welcome. Thanks!
> >
> > Leesa Noujeim
> > Sun Microsystems
> >
>
> Hi,
>
> I can't say that one couldn't tackle the problem by
> partitioning and/or using SPICE but it seems to me that
> the full-wave method FDTD is appropriate to answer
> at least some of your questions. FDTD is most efficient
> for high-frequency problems and is capable of
> handling lumped elements like voltage sources and
> resistors.
>
> Best regards,
>
> Ch. Schuster
>
> --
>
> -------------------------------------------------------------------
> Christian Schuster, Dipl.-Phys. IIS, ETH Zurich
>
> Integrated Systems Laboratory
> Swiss Federal Institute of Technology Fax: +41 1 63 21194
> Gloriastrasse 35 Phone: +41 1 63 27595
> CH-8092 Zurich E-Mail: schuster@iis.ee.ethz.ch
> Switzerland WWW: http://www.iis.ee.ethz.ch/~schuster/
> -------------------------------------------------------------------
> Disclaimer: This mail reflects only my personal opinion. I do not
> guarantee for any results of using it.
>
> **** To unsubscribe from si-list: send e-mail to majordomo@silab.eng.sun.com. In the BODY of message put: UNSUBSCRIBE si-list, for more help, put HELP. si-list archives are accessible at http://www.qsl.net/wb6tpu/si-list ****

--
Ronald B. Miller  _\\|//_  Signal Integrity Engineer
(408)487-8017    (' 0-0 ') fax(408)487-8017
     ==========0000-(_)0000===========
Brocade Communications Systems, 1901 Guadalupe Parkway, San Jose, CA  95131
rmiller@brocade.com,  rbmiller@sjm.infi.net

--------------EA905A565510203556C041E5 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> Hi Guys

This another of those modeling problems which HP Advanced Design System( ADS)
does quite nicely.  They have a 2 1/2 D simulator, planar with vias for field solving and
the picosecond modeling suite for modeling with frequency domain models.  The time domain
transform (Impulse)is also avialable.

The problem is the cost.  ~70k to buy or a lease at 20K per year.  Try the website
hp.com/go/hpeesof

Christian Schuster wrote:

Leesa Noujeim wrote:
>
> Should I use a full-wave field solver on the entire
> structure? Can I partition the problem into two vias
> and a transmission line, solve statically, then use
> spice?  Or can I use some closed-form approximations?
>
> All suggestions are most welcome.  Thanks!
>
> Leesa Noujeim
> Sun Microsystems
>

Hi,

I can't say that one couldn't tackle the problem by
partitioning and/or using SPICE but it seems to me that
the full-wave method FDTD is appropriate to answer
at least some of your questions. FDTD is most efficient
for high-frequency problems and is capable of
handling lumped elements like voltage sources and
resistors.

Best regards,

Ch. Schuster

--

-------------------------------------------------------------------
Christian Schuster, Dipl.-Phys.                     IIS, ETH Zurich

Integrated Systems Laboratory
Swiss Federal Institute of Technology           Fax: +41 1 63 21194
Gloriastrasse 35                              Phone: +41 1 63 27595
CH-8092 Zurich                      E-Mail: schuster@iis.ee.ethz.ch
Switzerland               WWW: http://www.iis.ee.ethz.ch/~schuster/
-------------------------------------------------------------------
Disclaimer: This mail reflects only my personal opinion. I do not
            guarantee for any results of using it.

**** To unsubscribe from si-list: send e-mail to majordomo@silab.eng.sun.com. In the BODY of message put: UNSUBSCRIBE si-list, for more help, put HELP.  si-list archives are accessible at http://www.qsl.net/wb6tpu/si-list ****

-- 
Ronald B. Miller  _\\|//_  Signal Integrity Engineer
(408)487-8017    (' 0-0 ') fax(408)487-8017                 
     ==========0000-(_)0000=========== 
Brocade Communications Systems, 1901 Guadalupe Parkway, San Jose, CA  95131
rmiller@brocade.com,  rbmiller@sjm.infi.net
  --------------EA905A565510203556C041E5-- **** To unsubscribe from si-list: send e-mail to majordomo@silab.eng.sun.com. In the BODY of message put: UNSUBSCRIBE si-list, for more help, put HELP. si-list archives are accessible at http://www.qsl.net/wb6tpu/si-list ****