[SI-LIST] R: 2 layers PCB with no Plane(gnd or Power)
- From: <gianguida@xxxxxxxx>
- To: "Mohamad Haghtalab" <mohaghtalab@xxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Mon, 4 Aug 2008 14:24:07 +0200
If you decide to use a 2 layer board
without ground or Power plane......
it means that you are assuming to not have
signal integrity problems
or in other words you are assuming that your application is slow enough
to not require any particular attention to SI.
In this case simulation would just be an unecessary difficult and tricky task
(no one can know in advance where will be the return current..., just to make
an example)
Easily this approach can lead to EMI problems...
It would be much less costly
use a 4 layer board with good PWR/GND layers
that find EMI/SI problems when you'll measure the prototype...
Giancarlo
________________________________
Da: si-list-bounce@xxxxxxxxxxxxx per conto di Mohamad Haghtalab
Inviato: dom 03/08/2008 23.50
A: si-list@xxxxxxxxxxxxx
Oggetto: [SI-LIST] 2 layers PCB with no Plane(gnd or Power)
Hi all
How can we analyse(simulate) PCBs (transmission line effect ,calculatig
Z0(SI/EMI issues)...) with 2 routing layers and between them(signal
tracks)ground Islands(cupper fills...),what's the ground associate with each
signal track,how can we predict where the return current of each signal will
flow?
Thanks for helping
------------------------------------------------------------------
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 technical documents are available at:
http://www.si-list.net <http://www.si-list.net/>
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
------------------------------------------------------------------
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 technical documents are available at:
http://www.si-list.net
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:
