[SI-LIST] Re: Serpentine patterns for length matching

I think that is the default setting for Mentor Graphics,
and I've never heard anyone complain about it.
I've NEVER seen trace width changes in serpentine bends.

Jack

.

On Thu, Oct 23, 2008 at 10:21 AM, <otter30@xxxxxxxxxxxxx> wrote:

> Hello,
> Does anyone know of general guidelines for the serpentine patterns used to
> match net lengths?
>
> We have a board with lots of diff pairs, and our board designer made the
> serpentines very
> tight. The separation between the adjacent bends of a pair is the same as
> the spacing of the
> traces in the pairs themselves. This seems to imply imedance variations if
> the trace widths
> don't change in the bends.
>
> Any insights would be greatly appreciated,
> Jim
>
>
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