IEEE EMC Society Central New England Chapter invites you on 6:30 PM, Tuesday, December 10 presentation
Ground Plane Gaps, Common Mode Voltages and Radiated EMI in Multi-Layer Printed Circuit Boards by Lee Hill, EMC Consultant Previous work in the EMC literature has demonstrated that the presence of common mode current on the external cables of electronic equipment is often the primary source of radiated EMI at frequencies above 30 MHz. In an attempt to reduce the magnitude of these currents to yield products that exhibit low levels of radiated EMI, many engineers have implemented segmented, gapped and/or narrow width ground plane geometries in mutli-layer PCB designs. The objective of the presentation is to review the results of recent research and experiments to explore and develop a better understanding of the inductance, common mode voltage, and the fundamental mechanisms responsible for radiated EMI from the PCB introduced by ground plane geometries. Lee Hill is an independent EMC consultant with ten years of experience in the design of electronic systems. He is sole proprietor of Silent Solutions, a private consulting firm specializing in high speed electronic systems design, analysis and resolution of EMI emissions and immunity problems. In 1994 he was appointed to serve as an IEEE EMC Society Distinguished Lecturer, and has authored numerous IEEE papers on EMI control. Mr. Hill was awarded the 1993 IEEE EMC Society President's Memorial Scholarship and the 1994 Missouri Collegiate Entrepreneur Award. He received the Master of Science Degree in Electrical Engineering and electromagnetics from the University of Missouri-Rolla. Mr. Hill consults and teaches nationwide and is a course instructor for Hewlett-Packard's Design for EMC course. The Electromagnetic Compatibility Chapter meeting will take place in the cafeteria of the Chomerics Facility, 77 Dragon Court, Woburn, Massachusetts on December 10 at 6:30 p.m. Coffee, sodas and cookies will be on Chomerics. From Route 128 take exit 36, Woburn, Washington St. Proceed North after the traffic light (Bradlees on the right), past the U.S. Post Office on the left. Dragon Court is on the left, just before the gas station. Proceed about 1 mile to the Chomerics facility which is on the left. The cafeteria is located on the ground floor of the building across from building 78. A no-host dinner with the speaker will follow the meeting. If you need more information, contact Mirko Matejic at (508) 549-3185 or email: mmate...@foxboro.com
