Re: [SI-LIST] : Ground gap problem

John Lockwood (
Tue, 23 Mar 1999 17:26:37 -0800


Motorola's MECL System Design Handbook has a few TDR plots which show the
effects of cutting ground under traces. See figures 7-11 on page 137 and
7-13 on page 139.

At 02:09 PM 3/23/99 -0800, you wrote:


<excerpt><fontfamily><param>Arial</param><smaller>Hi all,

I am trying to find the effects of the gaps on the ground plane for the
high-speed circuits.

Even though I have a couple of references about the via, which has the
ground gap problem, I need more specific data about the ground gap
problem regarding the gap size, gap location.....

Either measured data or simulated data will be fine ( papaers or refernce

Looking forward to your answers.



Sangil Lee



John Lockwood

Juniper Networks

Phone 650-318-3305

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