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We’re sad to report late-breaking news that independent engineering consultant Steve Weir has died. No details are available at this time.
Steve was a power and signal integrity guru with a variety of patents to his name. A fixture of DesignCon and a constant presence on the SI-List signal integrity forum, Steve wrote over a dozen papers on power integrity.
He also had a crazy, irreverent sense of humor that you don’t find among most engineers. I first met Steve about 10 years ago at DesignCon. He introduced me to a few other EEs, with caveats such as, “John’s an SI engineer, but more importantly, the statute of limitations has run out on his unprosecuted felonies. And don’t let him near your wife. Or your son, for that matter.”
It was like that with Steve. He didn’t seem to have a pause button. The world needs more people like that.
He will be missed.
Chang Fei Yee, Keysight Technologies
In electronic systems, signal transmission exists in a closed-loop form. The forward current propagates from transmitter to receiver through the signal trace. Meanwhile, the return current travels backward from receiver to transmitter through the power or ground plane directly underneath the signal trace that serves as the reference or return path. The path of forward current and return current forms a loop inductance. It is important to route the high-speed signal on a continuous reference plane so that the return current can propagate on the desired path beneath the signal trace.
Andy Shaughnessy, Design007 Magazine
At DesignCon 2018, I ran into Mentor’s Fadi Deek, the author of both of Mentor’s I-Connect007 eBooks: the newest, "The Printed Circuit Designer’s Guide to Power Integrity by Example," and their first book, "The Printed Circuit Designer’s Guide to Signal Integrity by Example." We sat down and discussed how the idea for the books came about, as well as some of the power integrity challenges facing PCB designers and engineers.
Kelly Dack, CID+, EPTAC
DesignCon is always a great place to check out the latest PCB layout and simulation software tools. During DesignCon 2018, Guest Editor Kelly Dack met with Sam Chitwood, a product engineer with Cadence. Sam explained how the Cadence Sigrity simulation software now allows users to make decisions early in the design process, and how this can help optimize the design of the power delivery network and ensure signal integrity in complex PCBs.