[SI-LIST] Re: 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.
>  
> 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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