[SI-LIST] Re: Ground vias around signal via
- From: Ivor Bowden <bowden.ivor@xxxxxxxxx>
- To: Aaditya K <aaditya.kandibanda@xxxxxxxxx>
- Date: Wed, 15 Oct 2014 20:29:40 -0700
And then we need to define "stitched", how far away from the
signal via is the stitching via.
And then "necessary", what are the signals / design
requirements.
On 10/15/2014 8:09 PM, Aaditya K wrote:
>
> By "proper" my intention now is, even if there is a
> reference plane change in signal path and both the
> reference planes are stitched.
>
> On Oct 15, 2014 8:04 PM, "Ivor Bowden"
> <bowden.ivor@xxxxxxxxx <mailto:bowden.ivor@xxxxxxxxx>> wrote:
>
> Right, for example if stackup is sig - gnd - sig then why
> bother?
> Need to know how Aaditya defines "proper" before further
> comment.
> -Ivor
>
> On 10/15/2014 12:32 PM, Lee wrote:
> > You are correct. Can't think of any case where they
> add value commensurate
> > with their cost.
> >
> > Lee
> >
> > -----Original Message-----
> > From: Aaditya K
> > Sent: Wednesday, October 15, 2014 10:41 AM
> > To: si-list
> > Subject: [SI-LIST] Ground vias around signal via
> >
> > Hello Experts,
> > I have a question on ground vias placement around
> signal via.
> >
> > My opinion is, if we have a proper return path,
> they are not necessary. Am
> > I correct?
> >
> > Any situations they are useful other than shielding?
> >
> > How will they help? When do we need them?
> >
> > Please help.
> >
> > Thanks
> > Aaditya
> >
> >
> >
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