Brent,

Yes, from what I understand this is correct but that is my problem, I don't
have a calculator to model this design to verify the parameters.  I could do
as Jason has suggested and just build to "spec" but I don't know if a
complete material spec has been provided.  I am enquiring as to this.  I
would however still like to understand the design, especially when the
designer has come to us to help him understand and verify the design.

Thanks to all for the input - keep it coming.

John

> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Alcorn, Brent
> Sent: November 20, 2003 8:36 AM
> To: [log in to unmask]
> Subject: Re: [TN] Co-planar Impedance Calculations
>
>
> Perhaps the "other" trace is the reference?  Although ideally,I
> believe, you
> would want the reference to be about 2x the width of the signal trace.
> Perhaps the design dictates that each signal has its own reference??
>
> Just my 2cents or 1.4 CDN.
> Brent

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------