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2006 Dallas EMC Colloquium
EMC Design Concepts and Applications for the Real World
"The Bruce Lee Show"
Presentations by:
Dr. Bruce Archambeault of IBM, and
Mr. Lee Hill of SILENT-SOLUTIONS
Date: Thursday, July 13, 2006
Time: 8:30AM thru 5PM, followed by Reception, Exhibits and Book Signing
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Program Description:
Mr. Lee Hill will start the program by discussing inductance in PCBs, connectors, and cables. Many electrical engineers, PCB designers, and EMC engineers first learned about inductance in the context of energy storage and phase angle between current and voltage. Unfortunately, in practical PCB and system EMC design, these concepts are virtually useless. This presentation rigorously defines and provides demonstrations of inductance along low and high frequency signal paths. Mr. Hill will provide examples of "good" and "bad" designs where self and mutual inductance can be easily visualized without complex mathematics.
In his afternoon presentation on illustrations and demonstrations of signal returns, grounds, and ground problems in product design, Mr. Hill asks: "What picture comes to your mind when someone says the word "ground" to you within the context of electrical design?" Most electronic and EMC design personnel describe surprisingly different electrical circuit concepts when asked to define exactly what "ground" means to them. This presentation discusses in detail the three different functions of signal ground. Ground loops within PCBs and systems are formally defined, with a detailed discussion of their characteristic magnetic and common impedance immunity problems.
Dr. Bruce Archambeault will first present "The "Ground" Myth." The term "ground" is probably the most misused and misunderstood term in EMC engineering, and in fact, in all of circuit design. Ground is considered to be a zero potential region with zero resistance and zero impedance at all frequencies. This is just not the case in practical high-speed designs. The term "ground" is a fine concept at DC voltages, but it does not exist at the frequencies running on today's typical boards. This presentation discusses the origin of the word "ground", what we really mean when we use the term "ground" and how to optimize our designs to achieve the over all goals for our reference strategy.
In the afternoon, Dr. Archambeault will present decoupling of PCB's for EMC and functionality in the real world. 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. This talk focuses on the sources of noise that the decoupling capacitors are intended to control, the physics involved in the noise propagation, and how to properly analyze 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.
Exhibition:
There will be an exhibition by vendors of EMC-related products and services in the ballroom neighboring the technical presentation. This is where the continental breakfast will be served, as well as the refreshments for both morning and afternoon breaks. During the reception and book signing with Bruce Archambeault from 5:30 to 7:00 pm in the exhibit area, heavy appetizers will be served. Drink tickets will also be provided to attendees so they can enjoy the "Happy Hour" open bar. A raffle will be held during the reception for great prizes. You must be present to win! Dallas EMC Chapter members are welcome to attend the reception only at NO CHARGE, provided a registration form is completed and sent in advance. A badge will be available for reception-only attendees upon arrival at 5:30 pm.
Registration Details:
The registration fee includes one copy of the tutorial record for pick up at "The Bruce Lee Show", continental breakfast, refreshments, lunch, and reception. The organizing committee reserves the right to substitute speakers, restrict size, or to cancel the tutorial. In the event the organizing committee cancels the tutorial, registration fees only will be fully refunded.
Individuals canceling their registration prior to June 13th will receive a full refund. No refunds will be made to individuals who cancel their registration after June 13th, however, substitutions will be allowed if notified prior to July 6th. Since attendance is limited, registration will be confirmed on a first come, first served basis. |
