[SI-LIST] Re: CPW Board Launch
- From: Ed Sayre III <esayre3@xxxxxxxx>
- To: Sitar Moniker <si_monkey2@xxxxxxxxx>
- Date: Wed, 06 Oct 2004 16:33:25 -0400
Sitar,
Great question. Just look at the leaders of the SI community, those who
are replying to many of the posts placed on the SI list serve. Those who
regularly publish books, in magazines, journals, conferences and white
papers. I am being vague because I do not wish to exclude or overstep any
individual or company where it may not be appropriate. As you should know,
an off-the-cuff list is not fully researched and so should not be place in
a public forum without peer review.
Ed Sayre III
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NORTH EAST SYSTEMS ASSOCIATES, INC
-------------------------------------
"High Performance Engineering & Design"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dr. Edward Sayre 3rd e-mail: esayre3@xxxxxxxx
NESA, Inc. http://www.nesa.com/
5 Lan Drive, Suite 200 Tel +1.978.392-8787 x 218
Westford, MA 01886 USA Fax +1.978.392-8686
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
At 12:45 PM 10/6/2004 -0700, Sitar Moniker wrote:
>It will be informative to know who those few people in the world who can
>do such design/modeling are. Please, if you don't mind.
>
>Ed Sayre III <esayre3@xxxxxxxx> wrote:
>Mark,
>Most PCB edge launch SMA's do not currently have the bandwidth to
>support a 70GHz bandwidth. If you are truly serious, you will need to
>utilize a tool like CST or Ansoft to fully model the SMA-PCB-trace
>interface. This is non-trivial, it is not for the faint of heart. You are
>asking for a design that only a few people in the world can do. This is
>not something that "rules-of-thumb" can answer. You need expert help, or
>the equivalent of your own time to learn the tools and how to deal with the
>tool errors that will be evident at these frequencies. Lastly, what tool
>would you use to measure something at 70GHz bandwidth? This again is non
>trivial, the fixturing required to have a 70G bandwidth is very select or
>totally custom.
>
>Hope this doesn't scare you away.
>
>Regards
>-Ed Sayre
>
>
>
>
>
>
>
>
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>
>
>At 10:54 A M 10/6/2004 -0500, Moeller, Merrick wrote:
> >Experts,
> > I am looking for information regarding the design
> >of a CPW launch for an edgemount coax connector. What
> >are the best available resources for the design of CPW
> >structures for testing, or otherwise?
> > What are some of the considerations in the
> >design of a CPW? Do's and Don'ts would be good. I would
> >like to support frequencies up to 70GHz.
> >Regards,
> >Merrick M. Moeller
> >
> >
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>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>NORTH EAST SYSTEMS ASSOCIATES, INC
>-------------------------------------
>
>"High Performance Engineering & Design"
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>Dr. Edward Sayre 3rd e-mail: esayre3@xxxxxxxx
>NESA, Inc. http://www.nesa.com/
>5 Lan Drive, Suite 200 Tel +1.978.392-8787 x 218
>Westford, MA 01886 USA Fax +1.978.392-8686
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
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