Chapter Chatter
“Big Torroids and Bigger Dents”
Based on a true story by Bill Ritenour included in the “EMC War Stories” video memorial tribute to Donald R. Bush.
The electrical product safety guys keep telling me that EMI really isn’t dangerous. Why do I keep hearing these kinds of stories then? Early in his career, Bill Ritenour, now of EMC Compliance LLC, was called to fix a potentially dangerous problem at a railroad-switching yard. At this particular rail yard, individual cars were taken to a high point and then released down a sorting line. As the cars traveled down the line, they were sorted onto appropriate spur lines, which were used to assemble various trains. All of the rail car sorting was coordinated from control centers along the line via 2-way radio (more about the control center buildings later). Inside, the switch controllers awaited commands to switch this car here or that car there. The problem was that radio communications were being seriously interfered with. If the controllers could not communicate, railcars could go left when they were supposed to go right. The cattle bound for Cleveland might be misrouted onto the midnight train bound for Milwaukee. And the poor guys in the command posts were in harms way. Each control center building was protected by an external ‘frame’ constructed of railroad rails, closely welded together. Bill noted that several of these protective ‘frames’ had very large dents in them. He realized then why rail yard management wanted to be certain of exactly where the rail cars (pilot less, massive, rolling projectiles) were headed.
What was causing all of this potential mishap and mayhem? Electromagnetic interference, of course. The printers operating in the control centers were emitting a harmonic that was jamming the 2-way radios. It was determined further that a problem was coming off of the power cords. The fix was simple, a large torroid installed on the power cable, and widely adopted by the railroad company. You see, Bill received a call from a ferrite salesman a few weeks later thanking him for the referral on an order of a thousand large torroids. It seems that rail company management was so impressed with the fix that torroids were installed on every printer in the company. Well, its pays to be overly cautious when dealing with dangerous levels of EMI.

Atlanta
A meeting was held on Tuesday, August 24, 2004 at the offices of Altea Therapeutics. The speaker for the evening was Greg Conley of Technical Systems Integrators based in Casselberry, Florida. Greg gave an introduction to Mentor Graphics Hyperlynx software for PCB radiated EMI prediction. The attendees learned that the basic Hyperlynx software accepts PCB layout data and performs post-layout verification. It is effective for clock and edge rates up to about 1 GHz. Also available are crosstalk and EMC modules. This appeared to be a valuable tool that was of interest to those in attendance. Before Greg’s presentation, there was time for networking and a pizza dinner. On May 20th, 2004, Dortch Walker, Field Applications Engineer with Rohde & Schwarz, spoke on “EMI Receivers vs. Spectrum Analyzers in EMI/EMC Applications.” This presentation dealt with the differences between test receivers and spectrum analyzers and the proper application of both in EMI/EMC testing. On March 16, 2004, the industry renowned Daryl Gerke of Kimmel Gerke Consultants, out of Phoenix, Arizona, spoke to our group. The topic was, “How to Design to Fail FCC and CE Tests... in 20 Easy Steps.” It was a light-hearted look at 20 common EMI problems from a different perspective. As the old saying goes, “Oscillators won’t, but amplifiers will.” What if we turned things around, and actually tried to fail EMI tests. This approach got a lot of chuckles, and the group got into the spirit by adding further suggestions. Daryl's talk provided some good technical information on EMI. The Chapter and the participants are indebted to Daryl for his fun and informative presentation and all who took advantage thanked him. For more about ‘what’s up’ with this Chapter, visit them online at http://www.ewh.ieee.org/soc/emcs/atl/atl-emc.htm

Daryl Gerke during his “How to Design to Fail FCC and CE Tests in 20 Easy Steps” presentation to the Atlanta Chapter in March.


Israel
Moshe Netzer reports that the Israel Chapter held a meeting on July 9, 2004. Nine people, including several student members and Chapter guests, attended the gathering. Three separate presentations where made at the unusually small meeting. First, Moshe Netzer of Rafael discussed “A Graphical Method for the Estimation of Radiation Hazards from a Crowded Multiple Antenna Site.” Next, D. Razansky, D. F. Soldea, G. Yankilevich and P. D. Einziger gave a paper entitled, “Estimates on Electromagnetic Power Absorption in Highly-Lossy Configurations.” Finally, Moshe Netzer spoke on the topic of “Graphical Presentation of 50/60 Hz Magnetic Field Contours as an Engineering Tool for Minimizing ELF Fields.”

Nanjing
Wen Xun Zhang, Chapter Chair, reports that the Nanjing EMC Chapter was very busy with meetings the past few months. Back in August, the Nanjing Chapter had a great seven-day run of multiple meetings. Beginning on August 25, Dr. Yang Hao of the Queen Mary College, University of London presented on the topic of “Innovative Antennas and Their Applications.” 34 IEEE members and guests enjoyed Dr. Hao’s presentation. The very next day, the Chapter held a meeting attended by 53 people, eager to hear Dr. Y.X. Guo of the Institute for Infocomm Research speak about “Regular and Miniature Wideband Microstrip Antennas for Wireless Communications.” On August 27th, 32 attendees heard a presentation entitled, “The Finite Element Method for Computational Electromagnetics: Recent Progress, Current Status and Future Directions” by Prof. Jian-Ming JIN of the University of Illinois at Urbana-Champlain. The week’s biggest draw was on August 28th when 102 attendees came to hear two presentations. The first was by Prof. Yahya Rahmat-Samii of the University of California at Los Angeles (UCLA). Prof. Rahmat-Samii spoke about “Electromagnetic Band Gap (EBG) Structures and Meta-Materials in Antenna Engineering.” Next, Prof. Weng-Cho Chew of the University of Illinois at Urbana-Champlain gave a presentation to the packed house regarding “Introduction to Fast Multi-pole Method for Electrodynamics.” To cap things off, the Chapter organized the “Progress In Electromagnetics Research Symposium (PIERS’04 at Nanjing) on August 29-31 at the opulent Zhongshan Hotel. 313 members and guests attended the symposium. To wrap up their recent flurry of meetings, on September 6th, the Chapter welcomed Prof. Yahya Rahmat-Samii of the University of California at Los Angeles (UCLA) again as he spoke on the topic of “Novel Antenna and Electromagnetic Systems Design Using Evolutionary Optimization Techniques.”

Oregon and SW Washington
Sidney Chan, Chapter Vice-Chair, reports that the Oregon and SW Washington Chapter kicked off another year of great meetings on September 29th. This year the Chapter meetings are being held at the University of Portland campus. Before the evening’s business and presentation, everyone enjoyed a spaghetti dinner with all the fixings. David Britton, Chapter Chair, introduced the new officers and then introduced the speaker Jerry Ramie. Mr. Ramie of ARC Technical Resources, Inc. presented a talk on “EMC Testing of Substation Products”. Jerry Ramie is a 24-year veteran of the regulatory compliance, EMC, and RF/Microwave instrument businesses. Jerry gave a lively, fast paced presentation with 96 slides. He introduced the topic by speaking on the threats to power providers including radio noise interference, electromagnetic sabotage, and reliability. He covered in depth the EMC standards and test requirements for protective relays used in substations. For more about ‘what’s up’ with this Chapter, visit them online at: http://www.worldaccessnet.com/~emc/

Jerry Ramie of ARC Technical Resources, Inc. relaxes before his presentation to the Oregon and SW Washington Chapter.

Mitchell Phillipi of Logitech, Communications Director, Derick Skouby of HP, Treasurer and Immediate Past Chair, and Dave Britton of HP, Chapter Chair (from left) visited before the Oregon and SW Washington Chapter meeting.

Aziz Inan, Membership Director of the Oregon and SW Washington Chapter.

Xiangying Ma (left) and Ting Ma from Welch Allyn, Inc. attended the Oregon and SW Washington September Chapter meeting held at Portland University.

The winery event held in Santa Clara during the EMC Symposium week provided a great opportunity for Oregon and SW Washington Chapter members (from left) Derick Skouby of HP, Mark Ohnstad and Mitch Phillipi, both of Logitech, to informally network.


Rocky Mountain
Charles Grasso of the Rocky Mountain chapter reports that the summer was busy with EMC meetings in Colorado! In June, the evening’s presentation featured “An Overview of the Signal Integrity Discipline.” To be involved with signal integrity design is to be involved at the very heart of a product’s functional operation. Without a systematic approach to signal integrity design, a typical product design cycle can be lengthened dramatically with iterative bench debug and, worse, erratic performance in the field. This talk by Ian Dodd of Mentor Graphics provided an overview of all the related design items that make up the signal integrity discipline. It introduced first generation synchronous timing analysis, setup and hold times, typical clock and edge rates. The presentation then showed how well designed traces at high frequencies act as transmission lines. He examined reflections and provided a simple lattice diagram to illustrate his point. Discontinuities (branches and stubs) with an introduction to parallel and series termination were then discussed. The talk also included what-if simulation analyzing simple net with imperfect terminations (Mentor Expedition PCB with Signal Vision SI Analysis). We examined how switching margins, ringing (overshoot and ring back), ground bounce and power droop all affect the signal quality. In the second half of the talk we were introduced to crosstalk, source synchronous signaling, multi-drop buses, typical clock and edge rates and the basics of transmission line losses and how they affect signal quality. We also discussed dielectric and skin losses and their significance at the clock speeds and examined the need to close decoupling and power plan analysis at higher clock rates. The need to occasionally use non-ideal return paths and how these affect switching was discussed. The talk ended by examining multi-gigabit differential signaling and a discussion of mid-frequency resonances and an example why multi-cycle analysis is needed to see these types of resonance effects. The examination of losses in high-speed lines (shown with an eye diagram) revealed the increased effect of losses and how pre-emphasis and compensation filters can be used as a means to overcome losses. In July, Professor Michel Ianoz gave the chapter an informative presentation on “The Biological Effects of Electromagnetic Fields.” Professor Ianoz discussed the sources of electromagnetic fields, which are of concern for the population: power lines and mobile communications (phones and antennas). He presented measured biological effects of electric and magnetic fields (low frequency and high frequency) and discussed possible effects on health. A research program initiated in 1997 at the Swiss Federal Institute of Technology of Lausanne, Switzerland to study the effects of low frequency magnetic fields on very simple vegetable structures (mosses) and high frequency effects on more complicated organisms like nematodes was also discussed. A method based on fractals to evaluate the effects was presented. In August, Ian Dodd discussed “Multi-Gigabit Design - Design Challenges, Options, and Simulation Solutions” with the Rocky Mountain Chapter. Ian’s presentation looked into the high speed design challenge involved in new bus and I/O designs and an overview of the multi-gigabit architecture was presented. We discussed the reasons for moving to a multi gigabit design and compared the new design challenges to the “traditional” high-speed design. The design challenge of actually implementing the multi gigabit design was presented with a review of the transmission line physical parameters. We then looked at the final analysis of the transmission line design, the eye diagram, and looked at various ways to identify the problems and some options on improving the signal quality. A review of the challenges in simulating the printed circuit board performance was also presented. In September, Bruce Archambeault of IBM gave a very helpful presentation entitled “Maxwell’s Equations for the Working EMC Engineer.” Understanding Maxwell’s equations has, typically, been the sole domain of professors of electromagnetics and Masters degree students. However, an intuitive understanding of these seminal equations without all the messy math is often all that is needed to properly design and debug electronic equipment. In this presentation, Bruce stripped out all the messy math and examined each of the equations and deciphered exactly what the weird symbols really mean. Using simple examples, Bruce helped us apply our new knowledge for a better understanding of how EM fields are created in electronic designs with practical examples. No wonder Bruce is a Distinguished Lecturer with the IEEE EMC Society!

Ian Dodd of Mentor Graphics (right) discusses signal integrity with Otto Buhler (left) at the Rocky Mountain Chapter meeting. That’s Chapter member Monrad Monsen caught in the middle.

Professor Michel Ianoz (standing) discusses the shielding properties of copper with Bill Ritenour (seated left) of the Rocky Mountain Chapter.

Ian Dodd spoke to a rapt audience at the Rocky Mountain Chapter’s August meeting.

Bruce Archambeault demystifies voltage gradients for the Rocky Mountain Chapter at their September meeting.

Mat Aschenberg (left) and Monrad Monsen (right) thank Bruce Archambeault for an excellent presentation to the Rocky Mountain Chapter.


Seattle
The Seattle EMC Chapter took the summer months off from holding regular Chapter meetings. Instead, many Chapter members in August attended the 2004 IEEE International Symposium on EMC held in Santa Clara, California. While there, Chapter Chair Pat André and Chapter Vice-Chair Janet O’Neil took the opportunity to network with the officers from their sister EMC Chapter, the Oregon and SW Washington Chapter. Together, these Chapter Officers recruited speakers for future Chapter meetings during breaks in the technical program, on the exhibit floor, and at the social events organized by the Santa Clara Symposium Committee. As such, an excellent technical program is planned for these Chapters during their respective 2004/2005 technical program year. At its September 28 Chapter meeting, Jerry Ramie of ARC Technical Resources spoke on the “EMC Testing of Substation Products”. This was Jerry’s second visit to the Seattle EMC Chapter and his sharp wit, lively presentation, and expertise were evident once again. Coming up in October, the Chapter is looking forward to a presentation by EMCS Distinguished Lecturer Tom Jerse of The Citadel. In November, Elya Joffe of KTM Project Engineering in Israel will visit to give a presentation on Electrophobia. This promises to be an exciting fall line up of speakers. For more information on the activities of the Seattle EMC Chapter, please visit the IEEE Seattle Section website at www.ieee-seattle.org.

Seattle EMC Chapter Chair, Pat André of André Consulting, (far right) worked the many events held during the Santa Clara symposium to recruit speakers for future chapter meetings. “Innocent victims” included Dave Seabury and Glen Watkins (from left) of ETS-Lindgren.


Speaker Jerry Ramie (center) is stumped by a question following his presentation at the September Seattle EMC Chapter meeting.

EMC Consultants Steve Jensen (left) and Pat André (Seattle EMC Chapter Chair) learned in Santa Clara that they have more in common than just EMC, they each drive identical vehicles! Note Steve’s license plate!


SE Michigan
The SE Michigan EMC Chapter held a two-day workshop on September 14 and 15 entitled “Reverberation Chambers for EMC Testing.” The workshop was designed for the automotive EMC community and held at EST Testing Solutions in Plymouth, Michigan. Speakers included reverberation chamber industry guru, Michael O. Hatfield, from the Naval Surface Warfare Center in Dahlgren, Virginia. Mr. Hatfield started the workshop with a three-hour presentation on the history and evolution of reverberation chamber testing methodology. He explained that no one would deny that today’s automobiles and vehicles are using more electronics than ever, and all agree that the trend will continue for the foreseeable future. As a consequence, within the automotive industry there must be a continual emphasis to identify cost effective EM test techniques that also maintain high accuracy (lower uncertainties). This is especially true for large vehicles such as tractors, combines, busses, etc. The traditional approach has been that as the number of “boxes” increases, the number of tests that must be conducted increases (which increases costs). In addition, as electronics are being used for more critical vehicle control functions, the test methods must also maintain their thoroughness. Past methods of testing have utilized the anechoic chamber. Mr. Hatfield advised that this workshop would discuss the use of the reverberation chamber to meet these new demands as an effective alternative to the anechoic chamber techniques. Speakers Terry North and Andrew Shune of DaimlerChrysler followed Mr. Hatfield’s presentation with a summary of the test techniques utilized by DaimlerChrysler with reverberation chambers, both now and planned usage for the future. Speakers Laura Ball and Kevin Pender of General Motors concluded the first day of the workshop with an overview of the test techniques utilized by General Motors with reverberation chambers, both now and planned usage for the future. They included an overview of the standard GMW3097 Rev 4 Reverberation Emissions Testing and Mode Stir Testing. Many questions followed this presentation. The following day, the “Practical Usage of Reverberation Chamber Testing Methodology” was presented. Garth D’Abreu of ETS-Lindgren started the day with a presentation on how to specify a reverberation chamber. He reviewed the cost versus benefits of this type of testing, the challenges still to be addressed, design and performance trade-offs, the theoretical basis for using reverberation chambers, the parameters used in the standards, and the development of pulse modulation, among other topics. Sean Emerson of Rohde & Schwarz was the second speaker. His presentation addressed the software and test measurement instrumentation needed for efficiently and cost effectively performing reverberation chamber testing. Mike Hatfield then concluded the workshop with a summary of what had been presented. Lastly, he discussed future considerations for reverberation chamber testing, including the existing and expected direction various EMC standards will take globally on this type of testing. Over 70 Chapter members and guests attended this two-day workshop, some from as far away as Atlanta. In addition to hearing several excellent presentations by industry experts on the topic, all were able to tour the new reverberation chamber on site at EST and witness hands-on testing. SE Michigan Chapter Chair Scott Lytle was very enthusiastic about the positive response to the quality of the workshop. He particularly acknowledged the assistance of the staff at EST, including Steve English and Donna Wenzel, who handled the logistics of the event. Chapter Treasurer Graeme Rogerson did an outstanding job of ordering the excellent food from Buster’s Barbeque served during lunch each day, as well as the tables and chairs brought in for the “classroom” style seating. Janet O’Neil of ETS-Lindgren coordinated the technical program and provided the handouts of speaker’s presentation slides. Phil Dew raided his office and provided lots of “freebies” for the attendees to take home, including coffee mugs and bags from Rohde & Schwarz as well as mouse pads from AR Worldwide and more! Kimball Williams of UL, Chapter Secretary, concluded the workshop by thanking the speakers for generously donating their time and talents, as well as the staff at EST, including Steve Dykstra, President, for allowing the Chapter to take over their facility for two days of IEEE EMC educational activity.

Bill Owsley of Underwriters Laboratories (right) enjoys the buffet barbecue lunch offered during the SE Michigan Chapter’s Reverberation Chamber Workshop on September 14-15.

During a break in the Reverberation Chamber Workshop, Steve English of EST Testing Solutions (left) showed speaker Terry North of DaimlerChrysler their new reverberation chamber.

Michael Natale and Thomas Arcati of Dayton T. Brown journeyed from Bohemia, New York to attend the Reverberation Chamber Workshop organized by SE Michigan Chapter Chair Scott Lytle of Yazaki North America (from left) and his committee.

A dinner was held by the SE Michigan Chapter following the first day of the Reverberation Chamber Workshop to thank the speakers for donating their time and talents to the technical program. GM’s Bill Sperber (recently retired), Kevin Pender, and Laura Ball (from left) enjoyed the Italian-Greek dinner at Ginopolis Restaurant.

Also enjoying the Ginopolis dinner were (from left) Steve English and Donna Wenzel from EST Testing Solutions, Mike Bosley of Visteon, Kevin Baldwin and Garth D’Abreu of ETS-Lindgren, and Will Adams of the Naval Surface Warfare Center in Dahlgren, Virginia. Donna and Steve appreciated sitting down as they were kept hopping during the Reverberation Chamber Workshop!

Speaker Sean Emerson of Rohde & Schwarz joined out-of-towners Chad Blueher and Eric Pratt from Delphi of Kokomo, Indiana (from left) at the dinner following the first day of the Reverberation Chamber Workshop.

The dinner celebrating the success of the Reverberation Chamber Workshop began with Saganaki, a flaming appetizer of Greek Kasseri cheese. Opa!

The technical program at the Reverberation Chamber Workshop was excellent thanks to the speakers, including (front row from left) Garth D’Abreu of ETS-Lindgren, Kevin Pender of GM, (back row from left) Sean Emerson of Rohde & Schwarz, Terry North of DaimlerChrysler, keynote speaker Mike Hatfield of the Naval Surface Warfare Center, and Laura Ball of GM.

Steve Dykstra, President of EST Testing Solutions, thanked the folks from Panasonic Automotive Systems, including Nee Salam, Jaive Peaks, and Janet Luo (from left) for their travel from Atlanta to Michigan to attend the Reverberation Chamber Workshop at his facility.

Mike Bosley of Visteon, SE Michigan Chapter Secretary Kimball Williams of UL and Janet O’Neil of ETS-Lindgren visited during the Reverberation Chamber Workshop.

Dan Wheeler of Michigan Scientific, Roger Goetz of Lear Corporation, Doug Kane of Michigan Scientific, and SE Michigan Chapter Treasurer Graeme Rogerson (from left) are shown checking out the EST Testing Solutions penguin “mascot” during a break at the Reverberation Chamber Workshop.


Southern Brazil
The Southern Brazil EMC Chapter held a two day EMC Colloquium and Exhibition at the Laboratório de Integração e Testes (LIT) at INPE (Brazilian Space Agency) in São José dos Campos on September 30 and October 1. EMCS Board member Carlos Sartori with the University of São Paulo, Brazil and Janet O’Neil, EMCS Region 9 Conference Coordinator, organized this event with the assistance of Roberto Menna Barreto with QUEMC in Rio de Janeiro and the staff at INPE, including Benjamim Galvao and Margarete Toledo. This was an exceptional event due to the outstanding facility where it was held, the generous and gracious hospitality of the staff at INPE, and the quality of the technical program. Leading speakers from the United States included Dan Hoolihan of Hoolihan EMC Consulting, Todd Hubing of the University of Missouri at Rolla, and Mark Steffka of General Motors. These speakers addressed medical, printed circuit board, and automotive EMC issues, respectively. In addition, Mr. Hoolihan gave a presentation on aerospace EMC and related standards. Local speakers Roberto Menna Barreto and Benjamim Galvao, who discussed the challenge of EMC to Brazilian industries and the EMC/EMI test resources at INPE, respectively, complemented this technical program. Carlos Sartori gave a presentation on the IEEE worldwide and the EMC Society in Brazil. Rounding out the technical program were Vince Rodriguez and Dave Seabury of ETS-Lindgren who gave presentations on an introduction to RF anechoic chambers and specific absorption rate (SAR) concepts and regulatory considerations, respectively. The colloquium and exhibition was held in the brand new auditorium at INPE. This was, in fact, the inaugural event to be held there. It featured state of the art audio-visual capabilities and acoustics. The two-day colloquium and exhibition began with a welcome cocktail reception on September 29. The world famous Brazilian cocktail, the caipirinha, quickly became everyone’s drink of choice. The next day, Clovis Solano Pereira, the head of LIT/INPE, personally welcomed everyone to the conference. This was followed by a series of technical presentations after a very unique continental breakfast with many varieties of pastries, juices and strong Brazilian coffee. Breaks in the technical presentations afforded attendees time to visit the small exhibition showcasing companies Rohde & Schwarz, ETS-Lindgren, Credence Technologies, and IME (representing TDK and AR Worldwide, among others). For lunch, attendees boarded a motor coach to travel 20 minutes into the countryside for an authentic Brazilian meal on a ranch with a very scenic lake. After the day’s presentations, Benjamim Galvao, head of the EMC lab at LIT/INPE, took everyone on a tour of INPE’s EMC laboratory. The highlight was seeing their new RF anechoic chamber, which measures 28.3m x 15.07m x 11.54m and features a 9.0m diameter turntable. The day concluded with a gala dinner outdoors on the INPE campus, featuring an incredible buffet of wonderful food and live musical entertainment. On Friday, October 1, the attendees enjoyed yet another sumptuous continental breakfast and stimulating technical presentations. Lunch on this day was at a traditional Brazilian churrascaria nearby, featuring a wide variety of meat carved tableside. At the end of the day, following the last presentation, all agreed it was a successful IEEE EMC Society conference in Brazil. Many friendships were formed amongst the EMC engineers present from the US, Brazil, Uruguay, and Argentina.

Toni Gurga of Credence Technologies enjoys the exotic fruit drinks that Margarete Toledo of INPE offered at the “Welcome Cocktail Reception” held the night before EMC Brazil 2004.

Speakers Dan Hoolihan and Todd Hubing ready themselves for a great day of technical presentations in the new auditorium at EMC Brazil 2004.

Speakers Dan Hoolihan (left) and Carlos Sartori visited in the exhibition area during a break in the EMC Brazil 2004 technical program. Note the many people in the background that attended this conference.

Lunch on the first day of EMC Brazil 2004 was held at a ranch near São José dos Campos. Several attendees dined outside near the beautiful scenic lake on the property.

Following lunch at the ranch, some of the EMC Brazil 2004 attendees, including Janet O’Neil and Dan Hoolihan, visited the gift shop nearby to see the many traditional Brazilian arts and crafts on display.

The first day of EMC Brazil 2004 concluded with a tour of the large EMC test laboratory at INPE. Many attendees found this to be a good time to talk with speaker Todd Hubing (far left) who had just concluded his presentation before the tour.

EMC Brazil 2004 attendees Luis Garcia of the Instituto Nacional de Tecnologia Industrial (left) and Fernando Hernandez Sanchez of URSEC appreciated having an IEEE EMC event in South America. Congratulations to Fernando who recently obtained Senior Member status in the IEEE EMC Society!

Achim Gerstner of Rohde & Schwarz, Clovis Solano Pereira, head of LIT/INPE, and Todd Hubing of the University of Missouri at Rolla (from left) enjoyed a caipirinha at lunch on the second day of EMC Brazil 2004.

Toni Gurga of Credence Technologies (left) provided raffle items at the conclusion of EMC Brazil 2004. Margarete Toledo drew the winning business card of Joao Batista Carvalho Filho of Avibras (right) for a Ferri-Shield ferrite kit.

Fernando Mauro Macedo Teixeira of Volkswagen Caminhoes e Onibus (left) received a probe from Credence Technologies following EMC Brazil 2004. Sandra Regina de Paula of INPE drew the winning business card much to the delight of Toni Gurga (right).

The speakers at EMC Brazil 2004 gathered at the conclusion of the two-day event, including (front row from left) Carlos Sartori, Todd Hubing, Dan Hoolihan, Mark Steffka, (back row from left) Benjamim Galvao, Roberto Menna Barreto, Vince Rodriguez, and David Seabury.


Washington, DC/Northern Virginia

Mike Violette reports that the Washington/Northern Virginia Chapter met at Blackie’s House of Beef in Washington DC on September 16th. Fifteen attendees listened to Dr. Bill Duff’s presentation on “Interference of Ultrawideband Emitters to Radio Receivers.” The Washington, DC/Northern Virginia Chapter is getting ready to elect a new set of officers and is planning to host a local one-day EMC event in the fall of 2005. Members in the Washington DC area are encouraged to contact Mike Violette (mikev@wll.com) for more information. The next meeting will be at the Naval Research Laboratories in Washington DC, on January 27, 2005. New officers will be in place and the planning for 2005 will be underway. EMC


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