[SI-LIST] Re: Impedance without a reference plane
- From: Istvan Novak <istvan.novak@xxxxxxxxxxx>
- To: bharathrajupcb@xxxxxxxxxxx
- Date: Sat, 02 Sep 2006 10:14:04 -0400
Bharath,
If the 25-mil wide trace carries important signal so that you need to
know its impedance, probably you dont want to leave it without a
well-designed reference path. Not having a reference plane available,
you can still provide a good reference path with a second trace, just
like a two-wire transmission line.
If the signal is not that important, I would not spend time figuring out
its impedance.
Regards,
Istvan Novak
SUN Microsystems
Bharathkumar Raju wrote:
>Hi,
> Have any one come across the situation where you need to simulate,
> calculate, measure, the characetristic impedance without a reference plane.
> I have a design where I need to decide upon the impedance of an
> isoalted trace (no other traces in the neighbourhood) of about 25 mil width
> withour any reference plane underneath.
> You inputs, sugestions will be of great value.
> Bharath
>
>
>
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl?Si-List_FAQ
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
