[SI-LIST] Re: 20H Rule
- From: Dudi Tash <dudi@xxxxxxxxxxxxxxxxx>
- To: "Makarand.Kanade@xxxxxxxxxx" <Makarand.Kanade@xxxxxxxxxx>, "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>
- Date: Wed, 13 Jun 2012 19:11:53 +0300
Hi Mak,
Indeed this is a "tricky question". The 20H Rule approach was to solve fringing
problems out of the PCB, while in fact the layout geometry shall have a design
(Bandwidth of the signals) dependent results.
According to my experience, and some articles I've read, in order to make it
work you should run simulations to feel more "comfortable" with the design.
Please take a look at the following:
http://www.sigrity.com/papers/epep2000/epep_20h.pdf
http://www.mwr.medianis.net/pdf/Vol7No3-12-ZPantic-Tanner.pdf
I hope this helps
Best Regards,
Dgtronix Ltd. I Founder & CEO I Dudi Tash
eFax: +972-3-7256490 I Mobile: +972-54-6345629 I Office: +972-9-9660967
www.dgtronix-tech.com
*This email contains confidential and proprietary information of Dgtronix Ltd.*
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Makarand Kanade
Sent: Wednesday, June 13, 2012 5:32 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] 20H Rule
Hi All,
It was a long time Question in mind and heard some versions related to the
"recessession of Power Plane 20H times inside the Ground plane on the board
edges helps reducing Edge Radiations in the Multilayer board" where H is the
height of POWER plane above the GND Plane,
there were contradicting articles on the question,
i want to know fom this forum of experts their views and if any case studies.
Thanks
Mak
Larsen & Toubro Limited
www.larsentoubro.com
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