Re: [SI-LIST] : Ground gap problem

Howard Ji (howardji@cisco.com)
Wed, 24 Mar 1999 07:42:57 -0800

John,

What version of the Motorola handbook you have? I have a 96 version and I
couldn't finder those finures.

At 05:26 PM 3/23/99 -0800, John Lockwood wrote:
>
> Sangil,
>
> 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:
> >>>>
>>
>> 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
>> book...)
>> Looking forward to your answers.
>>
>> Thanks
>> Sangil Lee
>>
>>
>>
>
> <<<<
>
>
>
> John Lockwood
> Juniper Networks
> johnl@juniper.net
> Phone 650-318-3305
>
>
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