[SI-LIST] Re: Middle (Star) Termination
- From: "Newton, Scott" <Scott.Newton@xxxxxxxxxxxxxxxx>
- To: "Robert Haller" <rhaller@xxxxxxxxxx>
- Date: Wed, 25 Feb 2004 13:33:48 -0500
Bob,
Thanks for the reply.=20
That sounds like exactly the level of detail I'm looking for. I checked =
at the Designcon98 website, but didn't see a link.
Is there another source for this paper?
Regards,
Scott
-----Original Message-----
From: Robert Haller [mailto:rhaller@xxxxxxxxxx]
Sent: Wednesday, February 25, 2004 12:54 PM
To: Newton, Scott
Cc: si list
Subject: Re: [SI-LIST] Middle (Star) Termination
Scott,
John Grebenkemper wrote an excellent paper that is available in =
the
Designcon98 precedings "Network Topology Analysis Using The Reflection
Coefficient" that does and excellent job of not only explaining the
theory of middle termination but also presents the math.
Regards
Bob
Newton, Scott wrote:
> Can anyone please provide a brief explanation regarding the theory of =
a middle termination scheme?
> In the book" High Speed Digital Design" by Johnson&Graham the topic =
seems to be glossed over. It essentially says that providing resistors =
connected in the middle of a star network that have impedance of 1/3 Zo =
work by halving the voltage at the node. I've used Hyperlynx to simulate =
this arrangement and it works well. I've searched the web and haven't =
found a satisfactory explanation.
>=20
> Thanks in advance.
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>
--
Robert J. Haller (rhaller@xxxxxxxxxx)
Principal Consultant
Signal Integrity Software Inc.
6 Clock Tower Place, Suite 250
Maynard, MA 01754
Phone: (978) 461-0449, ext 15
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