We have a document that might help:
 IPC-2141 Controlled Impedance Circuit Boards and High Speed Logic Design

This guide is intended to be used by circuit designers, packaging 
engineers, printed board fabricators, and procurement personnel so that 
all may have a common understanding. The goal in packaging is to transfer 
a signal from one device to one or more other devices through a 
conductor. High speed designs are defined as designs in which the 
interconnecting properties affect circuit performance and require unique 
consideration. 

It is available to members for $25, for nonmembers $50. Call IPC to order 
at (847) 509-9700 x 348.
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Lisa M. Williams
Technical Staff
IPC
2215 Sanders Road
Northbrook, IL 60062
phone: (847) 509-9700 x 379
fax:   (847) 509-9798
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On Thu, 18 Jul 1996, Luc Maesen wrote:

> Hi all,
> 
> Are there any works, meaning books or studies, 
> available that would help me better understand the usage
> of controlled impedance in the fabrication of circuit boards?
> The problems involved, the tools required, etc.
> 
> Any information related to this will be highly appreciated.
> 
> Regards,
> 
> Luc
> 
> [log in to unmask]
> 
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