|Organizer: IEEE Toronto, Electromagnetics and Radiation Joint Chapter|
|Title: Fundamental Concepts of Signal Integrity and EMC for Printed Circuit Boards|
Mark Montrose, Principal Consultant
of Montrose Compliance Services,Inc.
Santa Clara, CA, USA
Signal integrity is a primary concern for system functionality, while EMC compliance allows a product to be legally sold. A printed circuit board (PCB) is defined as a physical structure used to mechanically support transmission lines. Signal integrity is based on how efficiently information is propagated through a transmission line. A direct relat- ionship exists between time domain (signal integrity) and frequency domain (EMC). This presentation illustrates in simplified form, how and why EMI gets developed within a PCB and the manner in which propagation occurs-radiated or conducted. A major aspect of this talk deals with the subject "Maxwell Made Simple". There are many parasitics and concerns that exist in any product design. Failure to recognize these items dooms a product to potential failure. For example, a component is not a component, but must be incorporated using a virtual ground/return structure. In addition,we must solve the complex portion of the impedance equation using device parameters that are not published by component manufacturer. Also, we implement outdated rules-of-thumb based on illogical concepts and bad advice provided by those who use to design PCBs that incorporated vacuum tubes or slow speed TTL logic. Components now operate in the sub-picosecond range, which present new challenges and opportunities for design, signal integrity and compliance engineers. Regardless of whether one is an entry level or senior designer, fundamental concepts never change. It is interesting to see how much information we have forgotten over the course of many years, in our attempt to work with high-technology products using low-technology experience and knowledge.
Mark Montrose is principal consultant of Montrose Compliance Services, Inc., a full service regulatory compliance firm specializing in Electromagnetic Compatibility and Product Safety. Prior to becoming a consultant, Mark was responsible for regulatory compliance at numerous high technology companies in Silicon Valley, California. His work experience include extensive design test and certification of Informat- ion Technology Equipment and Industrial products. He is assessed by a European Competent Body to perform CE compliance approval testing and certification. Mark is a Senior Member of the IEEE, and is a current member of the Board of Directors for the IEEE EMC Society. In addition, he is a distiguished lecturer for the society and is considered an expert in printed ciruit board design for EMC compliance. He has presented numerous papers on PCBs and EMC at IEEE international EMC Symposiums and Colloquiums in North America, Europe and Asia. Mark also provides seminars and consulting services to corporate clients worldwide and is a Certified Instructor for Postsecondary Education in California. Mark has authored several best selling text/reference books published by IEEE Press. "Printed Circuit Board Design Techniques for EMC Compliance" , 1996 (translated into Japanese and Korean), "EMC and the Printed Circuit Board-Design, Theory and Layout Made Simple", 1999,(Japanese translation in process), and was a contributing author to the "Electronic Packaging Handbook", 2000 (CRC/IEEE Press).
|Time and Location: |
Wednesday, March 29th 2000, at 2:00 pm.
Galbraith Building, Room GB 202
Faculty of Applied Science and Engineering
University of Toronto, 35 St. George Street
The Institute of Electrical and Electronics Engineers,
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