[SI-LIST] Re: Isolation
- From: "Daniel, Erik S., Ph.D." <Daniel.Erik@xxxxxxxx>
- To: xlzhou@xxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Fri, 7 Sep 2001 11:42:12 -0500
Mick-
We have done some measurements of diff pair - diff pair coupling, both
near-end and far-end, both in the even mode and odd mode (differential). We
use a sine source and a balun to inject an odd- or even-mode signal into one
diff pair, and then use a balun and a spectrum analyzer to receive either
the odd- or even- mode signal coupled onto a victim diff pair. This is a
frequency domain analysis -- I'm not sure if this is what you are after, but
you could probably do a time domain analysis in a similar way. Let me know
if you'd like to know the details.
Simulating the effects is fairly straightforward in HSPICE (as someone else
pointed out), provided that the W-element accurately models the effects you
care about. In our case, we were trying to look at very high levels of
isolation (~100 dB) where we believe simple TEM models to be inaccurate.
- Erik
==================================================================
Erik Daniel, Ph.D. Voice: (507) 538-5461
Mayo Foundation Fax: (507) 284-9171
200 First Street SW E-mail: daniel.erik@xxxxxxxx
Rochester, MN 55905 Web: www.mayo.edu/sppdg/
==================================================================
> -----Original Message-----
> From: Zhou, Xingling (Xingling) [mailto:xlzhou@xxxxxxxxx]
> Sent: Thursday, September 06, 2001 4:17 PM
> To: 'si-list@xxxxxxxxxxxxx'
> Subject: [SI-LIST] Isolation
>
>
>
> Hi,
>
> Is there any information on characterizing isolation between
> differential
> pairs 'quantitatively' ?
>
> Thanks.
>
> Mick
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