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Meeting Notice

The IEEE Southeastern Michigan EMC Society presents

"Reducing Emissions through PCB Layout and Effective Power / Ground Plane Decoupling "

Presented by: Dr. Bruce Archambeault

Date: September 17, 2003

Time: 5:30 PM

--->>>>Click here for a copy of the 2.9MB pdf presentation


New Meeting Location: University of Michigan - Dearborn - Professional Education Center Bldg, PEC Rooms 1430 & 1440.

Map and directions at

***You must pre-register for this free event online at:

Registration Deadline: 12:00 Noon on 9/17/03


Schedule of Events 
5:30  6:00 Refreshments Provided by Carter McCormick and  Pierce (CMP)
6:00  7:00 Technical Presentation
This is a FREE event.   IEEE Non-Members Welcome!

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Synopsis of Presentation

Multi-layer PCBs typically contain a number of different high speed signals. Successful routing of all these signals often require some of the standard EMC "rules" to be violated. However, not all of these EMC rules are equal, that is, some are more important than others. A few of the more important causes of potential EMI will be discussed. In addition to the most important EMI causing design issues, decoupling of power and ground-reference planes is an important issue for both EMI emissions control and for circuit functionality. This topic has generated a lot of technical papers, and controversy. While there has been a lot of attention on this topic, there is still significant confusion about the best strategy for decoupling. This part of the talk focuses on the sources of noise that the decoupling capacitors are intended to control, and the physics involved in the noise propagation, and how to properly analysis the decoupling capacitor performance. The analysis must be performed in BOTH the time domain and the frequency domain. The frequency domain analysis is a steady state analysis, and will determine resonances, which are most useful for EMI emissions analysis. The time-domain analysis is a transient analysis and will help determine how well the current is delivered to the IC, and ultimately, how large (or small) the generated noise pulse will become. Real-world examples of measurements, as well as computer simulations are used to demonstrate the optimal decoupling strategy.

Biographical Sketch

Dr. Bruce Archambeault is a Senior Technical Staff Member at IBM in Research Triangle Park, NC. He received his B.S.E.E degree from the University of New Hampshire in 1977 and his M.S.E.E degree from Northeastern University in 1981. He received his Ph. D. from the University of New Hampshire in 1997. His doctoral research was in the area of computational electromagnetics applied to real-world EMC problems.

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