July 2010 Cover-

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FEATURES

COVER STORY
Practical Design of Differential Vias
A scalable, topology-based equivalent circuit model can accurately match via behavior to a bandwidth well above the application bandwidth, typically above 10 GHz. A look at a very simple way of modeling a differential via and translating its geometry into an equivalent circuit model. 
by Eric Bogatin, Bert Simonovich and Yazi Cao

DfF
Are Your PCB Data Unprepared?

It is great to have a fabricator that can provide its “secret sauce” to make the design work, but be ready to get locked into that supplier, because another fabricator’s recipe will be different. As a designer, is that a risk you want to take? 
by Jeff Champa

 

MONEY MATTERS

  • Global Sourcing
    China’s labor shortage.
    Tom Coghlan

  • ROI
    Hello? Anyone there?
    Peter Bigelow

 

TECH TALK

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