Chapter Chatter


EMC Guru and longtime IEEE EMC Society member Ron Brewer shared this classic “EMC War Story” with Chapter Chatter. When you read this, I am sure you will really feel sorry for Ron . . . what a rough assignment!
A Really Short ‘Vacation’ in the Bahamas
Once upon a time, when the Bahamas telephone toll center transactions were only $175,000 US per day — and EMC engineers made a great deal less — our facilities safety manager was attending to his appointed rounds with his brand-new, brand-name RF field intensity meter in hand. He wanted to make sure that the electric fields within the facility were less than the allowed maximum of 10mw/sqcm (194V/m). After all, our company didn’t want to accidentally cook anyone that worked there. It wouldn’t look good come time to renew their management contract.
Much to the safety manager’s surprise, the fields being generated by the video display units (VDU) at the operator consoles were way above the maximums. A quick calculation disclosed that the measured field intensities were in excess of 300 V/m! Did he call anyone? Did he ask how was that possible? Of course not! Being a good safetyman, with genuine concern for the workforce, he immediately shut down the toll center. Then, he called to report his findings. Then, his boss called corporate headquarters and they called my boss and also those of the six other EMC facilities that we had scattered around the world. Then seven EMC engineers, myself included, immediately reported to the Bahamas to solve this serious problem. At $175,000 per day there was a lot of incentive to get there quickly.
We were prompt, but still didn’t all arrive at the same time. But when we did, we found that the first EMC engineer on the scene had already discovered that the brand-new, brand name RF field intensity meter was susceptible to the 15 kHz VDU raster sweep frequency, and the toll center was back on-line. Of course, this required an appropriate celebration at a little place nearby . . . but that’s a different story!

 

Atlanta
After several years of not holding a meeting, the Atlanta Chapter convened on Monday, October 13 for a one-day tutorial and exhibition with Clayton Paul of Mercer University. Dr. Paul gave his popular presentation titled, “The Fundamentals of EMC.” Over 65 people participated in this event and there were 13 exhibitors staffing tabletop displays. It was a very successful event! The Chapter was approached to hold this tutorial and exhibition shortly after the August IEEE EMC Symposium in Boston, Massachusetts. Dr. Paul in nearby Macon County had a day free during the university break and offered to speak at the Chapter. The Chapter was reluctant to commit to such a big name speaker; after all, since they had not held a formal meeting in years, would anybody come? One would not want to disappoint Dr. Paul! Chapter Chair Janet Luo rallied her support team of long time EMC colleagues from the Georgia Tech Research Institute, including Don Clark, past president of the EMC Society, Hugh Denny, long time member of the EMCS Standards Committee, and Dave Millard, past member of the EMCS Board of Directors. Scott Proffitt of Advanced Compliance Solutions, a test laboratory in Buford, Georgia that does EMC, product safety, and environmental testing, initiated an e-mail and web blitz. As a result, it was determined that there was enough interest to ensure a good turnout for Dr. Paul. Thus, the event was a go and Janet Luo worked overtime to process registrations, purchase raffle prizes, handle the finances, etc. etc. During the event, several attendees convened and determined that the chapter needed to hold regular meetings again in Atlanta. Scott Proffitt volunteered to organize this effort until the chapter officers could be formally elected. Also, a NEW chapter was discussed for the nearby Huntsville, Georgia area. Rodney Boyd of WEMS Electronics and Jack Black of DLS Electronic Systems were instrumental in spearheading this discussion. The exhibitors volunteered to support these chapter efforts by providing speakers upon request. It was a productive day of networking and an excellent jump-start for the Atlanta EMC Chapter to get active again!

 

Clayton Paul and Janet O’Neil celebrate the publication of Dr. Paul’s newest book, “Electromagnetics for Engineers.”

 

Joining in the book celebration in Atlanta are (clockwise from left) Scott Proffitt of Advanced Compliance Solutions, Dr. Paul, Janet O’Neil, Edith Clark, Don Clark, Hugh Denny, Margie Denny, Janet Luo and Don Brown.

 

The “Two Janets” that organized the Atlanta EMC Chapter’s Tutorial and Exhibition with Clayton Paul: Janet Luo (left) of Capraro Technologies and Janet O’Neil of ETS-Lindgren.

 

Chris Faust of Haefely EMC (left) was joined by Dennis McGlinsey of W. A. Brown Instruments at the Atlanta EMC event.

Mike Hardiman and Don Brown of Brennan Associates witnessed a product demonstration by Dortch Walker (from left) of Rohde & Schwarz during the Atlanta exhibition.

Exhibitor break time during the Atlanta EMC event allowed John Fisher of Test Equipment Corporation (center) to visit with Rodney Boyd (left) and David Stanis of WEMS Electronics.

It’s not everyday an EMC event falls on your birthday! The Atlanta EMC Chapter recognized Chris Faust’s (right) birthday on October 13. Eyeing that delicious dessert are Rodger Gensel (left) and John Whitney of Amplifier Research.

Leader Tech participated in the exhibition held during the Atlanta EMC Chapter tutorial with Clayton Paul. Joel Sparr (left) and Darrell Yarbrough were present to man their display.

Stephen Embry of EMS Technologies (right) is shown with speaker Dr. Paul following the conclusion of his tutorial on “The Fundamentals of EMC.”


Beijing
The 3rd Asia-Pacific Conference on Environmental Electromagnetics (CEEM 2003) was held on November 4 to 7 in Hangzhou, China. Gao Yougang, Chairman of the Beijing EMC Chapter, and General Chairman of CEEM 2003, provided a report on the conference by Dr. Li Shufang. Dr. Shufang advised that this conference is held every three years in China. The emphasis this year was on effects to the human body and brain which is not surprising given that people now live in an ocean of various kinds of electromagnetic waves with wavelengths from nanometers to thousands of kilometers, which may be active or negative and need to be tested and well used. Some 200 papers were submitted of which 152 were accepted. The papers reported on the rapid progress over the past three years in both research of environmental electromagnetics and new EMC technology. Scholars and experts from all over the world attended the conference. There were four keynote speeches presented by experts in their respective fields, including: “Ionospheric Perturbation Associated with Earthquakes, as Revealed from Subinonospheric VLF/LF Propagation” by Masashi Hayakawa from Tokyo, Japan; “Some Effective Methods in Computational Electromagnetics” by D. G. Fang from Nanjing, China; “Properties of a Field-reduced Twisted Three-phase Power Cable of Finite Length” by Mathias Enrich from Hamburg, Germany; and, “A Generalized Algorithm for Antenna Near-field Computation in EMC Prediction” by Gao Ben-qing from Beijing, China. The next CEEM 2006 will be held in Dalian, China.

Professor Yang Qianli, Professor Ryuji Koga, Mrs. Koga, Mrs. Sokolov, and Professor S. A. Sokolov (from left) enjoy the conference banquet held during CEEM 2003.

The keynote speeches attracted a large audience during CEEM 2003.

Professor Gao Yougang (standing) made a short speech during the opening ceremony for CEEM 2003. Joining him at the head table are Professor Yang Qianli, Professor Shuichi Nitta, and Professor Massashi (seated from left).


Central New England
John Clarke, Chapter Co-Chair, reports that a joint meeting with the Northeast Product Safety Society (NPSS) was held on Wednesday October 22, 2003. The speaker was EMC Society Distinguished Lecturer Dr. Cheung-Wei Lam, Senior Engineer at Apple Computer, Inc. in Cupertino, California. The topic presented was “ Signal Integrity Design versus Radiated Emission Control.” Dr. Lam is engaged in IC, PC board and system level EMC R&D at Apple Computer and has implemented an EMC design and analysis process to facilitate on-time design at lower cost. Dr. Lam presented trade-offs and guidelines for signal integrity design versus radiated emission control. As a benefit to engineers responsible for both disciplines, an in-depth understanding of the similarities and differences between the two is very important. In his presentation, key signal integrity and EMC concepts were reviewed. Design considerations in the two disciplines were compared and contrasted at the chip and PCB levels. Prior to joining Apple, Dr. Lam was a co-founder and Principal Engineer of Transcendent Design Technology and he worked in Viewlogic’s Development Group (formerly Quad Design Technology). Over the years, he has played key roles in the design and development of EMC, signal integrity and ground bounce analysis software tools. 36 people attended the October meeting, of which 14 were IEEE EMCS members and 22 were NPSS members or guests. (Some IEEE members are also NPSS members). The Central New England chapter expects to have its next meeting in March 2004. Also, Distinguished Lecturer Professor Michel Ianoz was scheduled December 22 to present his topic “Lightning Electromagnetic Effects,” but due to his illness this is being scheduled for a new date in 2004.



Chicago
In October, the Chicago Chapter held a joint meeting with the local SAE, IEST and ASME chapters. Elite Electronic Engineering hosted the meeting. All in attendance enjoyed the great German food and polka music in keeping with the October Fest theme. A Cubs playoff game on the “big screen” was also a hit! The interaction between the different groups was well received. The chapter also held its annual Holiday social in December. Everyone had a good time. Approximately 60 people attended this event held again at Dave & Busters for the second year. Hats off to Carla Robinson for coordinating this effort, and to Jack Black, the new Chapter Chair, for coordinating the pool tournament. Thanks too to Dwayne Davis for providing the fun balloons.
The pictures say it all!

 

A tour of Elite Electronic Engineering was held prior to the October Chicago Chapter meeting.

 

Tom Braxton (left) and Roger Swanberg of DLS Electronic Systems visited prior to the October meeting of the Chicago Chapter.


Dwayne Davis of Associated Research (left) contributed to the fun of the Chicago Chapter Holiday social by making a special balloon for Brandon Krozel.


Ida Krozel enjoyed her balloon sculptures, courtesy of the Chicago Chapter.


Tom Braxton of Braxton EMC, Frank Krozel of Electronic Instrument Associates Central, Inc., Craig Dinsmore of Elite Electronic Engineering, and Nick Karnezos (from left) all enjoyed the Chicago Chapter Holiday social event in December.


Ray Klouda of Elite Electronic Engineering (left) congratulates Jerry Meyerhoff of Motorola. Jerry was recognized as “Person of the Year” by the Chicago Chapter.


Wolf Josenhans of US Robotics (left) pauses to evaluate his next pool shot under the watchful gaze of Dwayne Davis of Associated Research (far right). The pool tournament was a big hit at the Chicago Chapter Holiday social.


A full house was present at the October Chicago Chapter meeting to hear Bob Hofmann speak.



Israel
Moshe Z. Netzer, the Israel EMC Chapter Chairman, reports that they cooperated with the Holon Academic Institute of Technology (HAIT) to organize a one-day meeting. This meeting involved the EMC Chapter along with four other professional IEEE Chapters in Israel: Communication, Antenna and Microwave (MTT/AP) Vehicular Technologies (VT) and Electronic Devices (ED). The title of the meeting was: “Electromagnetic Radiation Aspects: Applications in Communication Engineering, EMC, Antenna and Microwave, and Electronic Devices.” About 95 engineers and 130 students from HAIT attended the meeting. The feedback was simply great! The morning session, in which all the attendees had gathered, was devoted to “Electromagnetic Radiation Aspects.” During the afternoon, there were three different sessions on EMC, Communications, and Electronic Devices. The morning session was opened with speeches from HAIT president, Professor David Mohalem Maron, Professor Jacob Gavan, the Dean of HAIT School of Electrical, Electronic and Communication Engineering, Professor Gadi Golan Head of HAIT Electrical and Electronic Faculty, Mr. Elya Joffe, EMCS BoD member and Region 8 Coordinator, and Mr. Moshe Netzer, Israel IEEE EMC Chapter Chairman. Mr. Joffe called to the stage several EMC engineers who received appreciation certificates from IEEE for outstanding professional achievements. He then detailed and described the upcoming 2004 EMC Symposia, worldwide. The morning session included very interesting lectures on Electromagnetic Radiation Aspects. These papers included:

  • Dr. Stelian Gelberg, from the Ministry of Environment presented, “Determining an Exposure Threshold for Electromagnetic Radiation.”
  • Mr. Moshe Netzer, Israel IEEE EMC Chapter Chairmen gave a paper entitled, “International Exposure Standard of ELF Magnetic and Electric Fields and Proven Biological Effects.”
  • Mr. Oren Hartal, RAFAEL Chief Scientist, presented, “Engineering Consequences of Coping with ELF 10 mG Exposure Threshold.”
  • Professor Jacob Gavan, Dean of HAIT School of Electrical, Electronic and Communication Engineering, presented, “Techniques for Increasing Radiated Power Efficiency and Reducing Undesired Parasitic Radiation, Particularly in Cellular Systems.”

The afternoon had three parallel sessions including: EMC, Communications and Electronic Devices. Following are some of the many subjects presented in these sessions:

  • EMC Session: Mr. Elya Joffe, “Path of Least Inductance as a the Base Principal for Fast Digital PC Board Design”; Dr. Alex Axelrod, “Impact of Balancing on EMC System Performance”; Mr. Ilan Cohen, “Safety Vs EMC: Product Design Consideration.”
  • Communications Session: Dr. Jacob Baal-Shem, “Consumer Communications and Networking”; Dr. Moshe Ran, “Trends in Air Interfaces for 4G Mobile Communication Systems”; Dr. Reoven Midan, “Spectrum Sharing and Interference Issues Associated with Mobile Satellite Services (MSS)”; Mr. Alan Bensky, “Telecom Authority Regulations: Obstacle or Catalyzer to the Advancement of Wireless Communication”; Dr. Haim Metzner, “A Novel Broad Band Double Short Wall Printed Antenna.”
  • Electronic Devices: Professor Gadi Golan, “Barium Titanate Enthalpy Sensors”; Dr. Alex Eksilevtz, “Phase Transition Mechanism in Vanadium Oxide Thin Films”; Dr. Igor Lepsker, “Distance Learning of Scanning Electron Microscope”; Professor Michael Glob, “Applications of Diffractive Optics.”

The admission to the meeting was free. The chapter is very grateful for the five hundred dollars in “Angel Funds” from the IEEE EMCS that supported the meeting.

Welcome address from Professor Jacob Gavan at the Israel Chapter one-day meeting.


Welcome address from Mr. Moshe Netzer, Israel EMC Chapter Chairman.


Elya Joffe (right) and Moshe Netzer present a Certificate of Technical Achievement to Benjamin Vitorio Kauders (center).


Elya Joffe presents a Certificate of Technical Achievement to Oren Hartal.

 

Elya Joffe presents a Certificate of Technical Achievement to Armon Rabiah.


Korea
Jong-Hwa Kwon, the secretary of the Korea EMC Chapter and Professor Dong Il Kim (Korea Maritime University), Chairperson of the Korea EMC Chapter, report that the Korea Chapter hosted the “2003 EMC Korea Workshop” at the Seoul Education Center on October 16. The 11 presentations covered various aspects of EMI/EMC measurement, numerical analysis, and signal integrity, among other EMC topics. The workshop also included Mr. Mike Gleavese’s paper titled “GTEM Systems Theory, Application and Quality”. The workshop was attended by 100 participants and was coordinated by the Korea Electromagnetic Engineering Society (KEES) and the IEEE AP/MTT Korea Chapter.

Mohawk Valley
The Mohawk Valley Joint EMC/Reliability Chapter ended its activities for 2003 on a high note in December by hosting guest speaker Dr. John Norgard. Back by popular demand, Dr. Norgard gave an encore presentation of his talk on “Thermal Images of Electromagnetic Fields Using Infrared Thermography and Microwave Holography.” Dr. Norgard summarized a novel technology that he has been applying to measure electromagnetic energy using infrared techniques. He extended his presentation on the related topic of Microwave Holography. Several examples were presented of electric field distributions radiated from microwave antennas and high power microwave (HPM) sources, scattering from and diffraction around complicated metallic objects, e.g. model aircraft, coupling through apertures in shielded enclosures, and modal distributions excited inside waveguide cavities. Examples of magnetic field distributions near conductive surfaces and induced surface currents on metallic surfaces were also presented. The advantages and disadvantages of this new IR measurement technique were discussed. In summary, the technique involves placing a minimally perturbing (thin, planar, low-loss) IR detection screen in the plane over which the EM field is to be measured. The temperature rise in the screen, due to Joule heating of the lossy screen material, is proportional to the intensity of the incident field and creates a 2D thermal map (IR thermo gram) of the intensity of the EM energy absorbed in the screen. The temperature distribution in the detector screen is measured with a sensitive IR camera and is converted into a false color image (3D relief map or 2D contour plot) of the field, which produces a visual image of the field being measured. Using the thermal and electrical parameters of the detector screen, the magnitude of the electric or magnetic field that produced the temperature rise in the screen can be measured on a pixel-by-pixel basis. By creating an interference pattern (hologram) with a known standard, e.g., a standard gain horn antenna (calibrated at NIST/Boulder), or by using iterated plane-to-plane 2D Fourier Transforms (FFTs), the phase of the electric or magnetic field can also be determined. This research continues to be of much interest to the Air Force Research Laboratory in Rome, New York. EMC Chapter Chair Irina Kasperovich plans for future talks in 2004 that will address additional interests of the local engineering and technical community. These include topics on New Paradigms for Spectrum Management, Product EMC Compliance, and Computational Electromagnetics.

Orange County
Chapter Chairman Robert Tozier reports that the Orange County EMC Chapter had two meetings during the Fall. On October 23, they held a “Vendor Show” with presentations from four leading manufacturers of EMC solutions. On November 18, the Chapter presented “An Overview of Accepted Test Methodologies for Determining the EMC Compliance of Wireless Devices”. Many thanks to Northwest EMC for hosting the meetings at their new facility in Irvine! The “Vendor Show” featured Mike Nelson from Laird who presented EMI/RFI Gasket Solutions, Jim Ott from TDK RF Solutions who presented “Future Technologies in Test Chambers,” Eran Israely from Ophir who gave a presentation regarding in-band harmonics and, last, but not least, Vince Rodriguez from ETS-Lindgren who presented “The EMCO 3117 Double Ridge Guide Horn” which described the changes made to the traditional DRGH antennas used in EMC to accomplish a single well defined main radiating lobe. Each of the speakers had up to 20 minutes to present new technologies and solutions from their respective companies. For the November meeting, Greg Kimmel of Northwest EMC gave a presentation on testing and certification of wireless devices. This was a learning experience for many of the attendees. The technical presentation was well received and many stayed afterwards to ask questions. Both the October and November presentations had over 25 attendees each and the Chapter officers are excited to see the attendance continue to grow. The Orange County Chapter is looking forward to a terrific 2004, especially with the improving economy. The Orange County Chapter elections were also held in November. The Chapter is pleased to announce that Sharish Shah from Compatible Electronics was elected Vice-Chair. He will be joining Robert Tozier from CKC Laboratories, Rick Candelas from Aegis Labs and Ed Nakauchi from Laird in 2004. Randy Flinders, the former Chairman and Vice-Chairman, elected to not run again. The Chapter is very thankful for his many years of service to the Orange County Chapter. Randy will continue to help with updating the Chapter Web-Site.

The Orange County Chapter relaxes and awaits the start of vendor presentations during the October meeting at Northwest EMC.


Mike Nelson of Laird Technologies also participated as a speaker in the Orange County Chapter “Vendor Show.”


Jim Ott of TDK RF Solutions presented “Future Technologies in Test Chambers” at the Orange County Chapter “Vendor Show.”


Orange County meeting attendees enjoyed a tour of the new Northwest EMC facility in Irvine following the technical presentations.


Eran Israely of Ophir RF participated as a speaker at the Orange County Chapter “Vendor Show.”


The Orange County Chapter gets ready for Greg Kiemel’s popular and informative transmitter testing and certification talk.


Greg Kiemel of Northwest EMC speaks to a full house during the November Orange County Chapter meeting at Northwest EMC.


Vince Rodriguez of ETS-Lindgren spoke about advances in antenna performance design at the Orange County Chapter “Vendor Show.”



Oregon and Southwest Washington
David Britton, the Chapter Vice Chair, reports that the Oregon and SW Washington chapter held their first meeting of the Fall season on September 29, 2003. After dinner, Distinguished Lecturer Chris Kendall of CKC Laboratories presented, “Designing MIL Systems that Employ High Speed Data Systems” to an enthusiastic crowd. All enjoyed Chris’s presentation. In October, Varuzhan Kocharyan from Northwest EMC, also the Chapter Membership Director, presented his paper “Express Diagnostic Method for ESD Simulators and ESD Test Stations”. He originally presented this paper at the Boston Symposium. His presentation included a demonstration of the method. Several attendees expressed interest in duplicating the method in their labs. Franz Gisin of Sanmina-SC was the presenter in November. Franz spoke on “Thinking Outside of the Trace: The Physics of High Speed PCB and Backplane Interconnects”. His high-resolution color simulations of field propagation wowed the audience and garnered several questions. The chapter members also enjoyed the annual Holiday Social at the Oregon Museum of Science and Industry this year. The chapter joined the local IEEE Section officers and the Electronic Representatives Association at the party. Of the nearly 100 attendees, 22 were from the EMC Chapter. The festively decorated local “Christmas Ships” cruised by on the Willamette River just outside the windows of the reception hall to the enjoyment of all. 2004 events planned for the Oregon SW Washington Chapter include:

  • On January 20, the chapter will form a vanpool for interested members and participate in the Seattle Chapter’s Tutorial and Exhibition featuring Distinguished Lecturer Bruce Archambeault and DL coordinator Lee Hill. This is an all day excursion!
  • On February 25, the chapter will participate in a one-day event in Portland sponsored by Amplifier Research. William Parker of Parker EMC will present a tutorial on “RF Immunity/Susceptibility Testing”. Chuck Britten, our Chapter Secretary, coordinated this event.
  • On March 24, William Owsley from Underwriters Labs and our Chapter Treasurer will present to the chapter.
  • On April 28, Distinguished Lecturer C.W. Lam from Apple Computer will present to our chapter.
  • On May 19, William Parker of Parker EMC will return to our chapter to present on a different subject.

For details on the above meetings and to RSVP, check our website at: http://www.worldaccessnet.com/~emc/

Derick Skouby of Hewlett Packard (left), Oregon and SW Washington Chapter Chair, and Varuzhan Kocharyan of Northwest EMC, speaker at the October Chapter meeting.


Varuzhan Kocharyan demonstrating his “Express Diagnostic Method for ESD Simulators and ESD Test Stations” for the Oregon and SW Washington Chapter.


Ed Blankenship, Past Chapter Chair of the Oregon and SW Washington Chapter, and his wife Elizabeth also attended the Holiday Social.


Varuzhan Kocharyan, Oregon and SW Washington Chapter Membership Director, and his wife Natalie at the Holiday Social.


Several Chapter members enjoyed some wonderful desserts at the Oregon and SW Washington Chapter’s Holiday Social.


Speaker Franz Gisin of Sanmina SC (left) with Derick Skouby, Chair of the Oregon and SW Washington Chapter.


Some casual networking and socializing occurred at the Oregon and SW Washington Chapter meeting in November.


Oregon and SW Washington Chapter meeting attendees are shown enjoying pizza before the presentation.


Chris Kendall presented “Designing MIL Systems that Employ High Speed Data Systems” at the September meeting of the Oregon and SW Washington Chapter.

 

Phoenix
Glen Gassaway reports that the Phoenix Chapter had another very good turn out at its November 13 Chapter meeting, held at Garcia’s Mexican Restaurant in Tempe. The social hour went long, as they sat and ate their fill of Garcia’s wonderful food. Harry Gaul brought the meeting to order at 7:15 pm. This time, the meeting’s attendance included several manufacturers’ representatives from the Valley as well as from other locations around the country. Of course, the usual bunch of Valley EMC’ers was well represented. During introductions, Bill Blanford brought up that Orbital Sciences was looking for a permanent-hire EMI Engineer. Daryl Gerke then got everyone’s attention and formally introduced the featured speaker, Jim Muccioli, the Chief Technology Officer for X2Y Attenuators. Jim was accompanied by Sypher-representative Tom Venable. Sypher is a company that uses the X2Y technology in its products. Jim began his presentation by explaining the X2Y Technology®, which is an embedded circuit layered architecture that changes a standard ceramic capacitor into a balanced and symmetrical circuit that results in internal noise cancellation. The topology is to be thought of as a type of circuit rather than just another capacitor. Although it has been used in a variety of filter applications, there are several other options for its use, generally left up to the imagination of design engineers. The technology can replace standard or feed through caps, low inductance capacitors, inductors, and bulk capacitors. The structural design boasts ‘interwoven’ dual capacitor layers, a very low inductance from the capacitors to ground, and the benefit of opposing current flow, which can cancel mutual inductance. Jim mentioned that in some cases he has seen a 20 dB improvement of noise suppression using the X2Y technology as opposed to a standard ceramic capacitor. Another benefit is the extremely well matched dual capacitors in the design, which have a typical value tolerance of 1 – 2.5% between one another. The matching characteristics hold true even with large capacitor values. X2Y technology has been used in several form factors, including planer, MLC and single layer packages. It is good for cross talk attenuation in filter connectors, and has been used in heat sinks and motors. For decoupling, the technology has been shown to work up to 18 dB better than two standard capacitors. Jim compared the emissions reduction capabilities of X2Y technology using ceramic, ferrite and MOV dielectrics with circuits that contain no filtering. Operation of the X2Y technology was seen up to 6 GHz! Generally speaking, the X2Y technology seemed very impressive. After Jim’s presentation, he was awarded a jar of fantastic local salsa, which has become the traditional ‘Thank You’ for our Chapter’s excellent presenters. Thanks to Jim for taking the time to give us a great presentation! Future meeting announcements are available on the Phoenix EMC Chapter Web site at http://www.ewh.ieee.org/r6/phoenix/phoenixemc/.

Jim Muccioli, Chief Technology Officer for X2Y Attenuators, compares the emissions reduction capabilities of X2Y technology using ceramic, ferrite and MOV dielectrics.



Rocky Mountain
In September, the Rocky Mountain Chapter was privileged to host Dr. Bud Hoeft, who has been involved in EMC for – well – a long time! The design of electronic equipment has raised the interest in electromagnetic life above 100 MHz, primarily due to an increase in high-speed digital electronics and telecommunications. As Bud demonstrated for the Chapter, in this frequency regime, many of the usual simplifying assumptions are no longer true! The EMC engineer must adopt a new way of looking at the problems. The EMC engineer must be aware of the long and short of it, namely, the dimensions of the circuit/system in terms of wavelengths. Instead of components connected by wires, Bud showed us how the EMC engineer should visualize the circuit/system as a world made up of transmission lines. Bud’s presentation was very lively and showed that nothing much has changed with the physics, only the application. After holding quite a few meetings during the year, the officers of the Rocky Mountain Chapter decided that a special “thank you” meeting was in order for December. They wanted to provide a special meeting in which our members and affiliates could meet, mingle and generally get to know each other. A controversial topic, regarding traces causing EMI, was the excuse and, coincidentally, Eric Bogatin had just published a technical book on Signal Integrity, the EMC equivalent of a perfect storm. During the planning stage of this meeting, a remarkable membership statistic came to light. The Rocky Mountain Chapter has lost over 50% of its membership; fully 100 members have dropped off the membership list! We decided to demonstrate that being an IEEE member does provide some benefits and so the concept of the social in a nice venue was born. The Westin Hotel turned out to be the perfect location. The room supplied by the hotel was very comfortable and boasted views of a fountain with the Front Range as a backdrop. During discussions with Eric, it was apparent that the concept of partial inductance had applications linked EMC and SI - the perfect subject. The goal of this presentation was to explain the net inductance of the return path and the origin of ground bounce. Using simple explanations, Eric took us through an analysis of inductance and how it is the inductance in the return path that contributes significantly to an EMI engineer’s headaches. By understanding how this voltage is generated and what design factors influence it, we can understand how this looks like a dipole antenna and what will increase or decrease the driven common currents. After the meeting, we raffled two copies of Eric’s new book, generously donated by the publisher Prentice Hall, to the two lucky winners Otto Buhler and Kevin Height.

Eric Bogatin describes inductance at the Rocky Mountain Chapter’s December meeting.


Charles Grasso (right) thanks Bud Hoeft for his informative presentation to the Rocky Mountain Chapter.


Chas Grasso, Eric Bogatin, and Matt Aschenberg are all smiles after an outstanding Rocky Mountain Chapter meeting in December.


Kevin Height (right) was also a lucky winner of Eric Bogatin’s new book on Signal Integrity at the December meeting in Colorado.


Otto Buhler (right) accepting his prize from Eric Bogatin at the December Rocky Mountain meeting.



Santa Clara Valley
Darryl Ray reports the Santa Clara Valley chapter continued its monthly technical presentations during the fall. In October, Dr. Rocky R. Arnold, Founder, President and CEO of WaveZero, Inc. in Sunnyvale, California, presented a paper entitled “The Dual Challenge of Electromagnetic Compliance and Environmental Compliance.” The presentation outlined the environmental requirements coming into force in Europe. Those requirements will limit some of the older shielding technologies being used in some electronic equipment. The presentation showed some alternative methods of achieving both EMC and environmental compliance. In November, the chapter hosted the EMCS Board of Directors as they were in town for their quarterly meeting. Dr Todd Hubing, President of the EMC Society and a Professor at the University of Missouri - Rolla, presented a paper called “PCB EMC Design Guidelines: A Brief Annotated List.” The presentation reviewed some of the more general EMC design guidelines for printed circuit board layout and categorized them as good, bad or indifferent. The chapter provided food and drinks prior to the presentation. The chapter has always had good attendance when the discussion pertains to PCB design. However, a new chapter attendance record was set as over 150 people arrived to hear Todd’s presentation! The December meeting featured Bill Parker from Parker EMC Engineering for a talk entitled “Down Memory Lane, 30 Years of EMI Field Testing”. Bill had a tremendous number or war stories to share with the audience. The experiences ranged from being held by local authorities for “security concerns” to nearly getting trapped by rising floodwaters in a river near his temporary test site. It was an interesting perspective as compared to testing in normal laboratory settings.
Now on to an EMC 2004 update: The Steering Committee continues its hard work planning the Santa Clara Symposium. To date, over 220 abstracts have been received and are being reviewed by the Technical Committees. Over 120 exhibit spaces have been sold. David Hanttula and Clayton Paul report the workshop planning is nearing completion. The goal for the workshops is provide tutorial level information that the EMC practitioner can immediately apply at their jobs. Don’t forget to “remind” your boss and spread the word to help us promote the symposium. We hope to see you in Santa Clara in August!

Chuck Troia, Santa Clara Valley Chapter Chair, left, assists Todd Hubing with his presentation in November.


Dr. Rocky Arnold spoke to the Santa Clara Valley Chapter in October on “The Dual Challenge of Electromagnetic Compliance and Environmental Compliance.”



Seattle
Chapter members convened in October for an October Fest themed meeting sponsored by Northwest EMC. There was plenty of good food and beer for all! The speaker was Varuzhan Kocharyan of Northwest EMC who gave a presentation titled, “An Express Diagnostic Method for ESD Simulators and ESD Test Stations.” Dr. Kocharyan described and demonstrated a unique and elegant method for verification of ESD guns that could be used before every use. He showed how such a method could verify the gun parameters as well as the two 479 KOHM bleeder resistors. Chapter members were encouraged to bring their ESD guns for a free verification after the meeting. It was one of the rainiest nights in recorded history in Seattle so attendance was down, but all who braved the weather that night were very appreciative of an excellent presentation. In November, the Chapter was treated to the return of Franz Gisin of Sanmina-SC in San Jose, California. The presentation was titled, “Thinking Outside of the Trace: The Physics of High Speed PCB and Backplane Interconnects.” Franz’s presentations always have a high “wow” factor due to the exciting and elaborate visuals. This presentation was no exception! Anyone who has spent any length of time wandering around within the Signal Integrity discipline, will, on occasion, take time out to reflect on exactly what it is about pushing electrons around on conducting materials that causes them to misbehave and distort signals as they are routed through high-speed printed circuit boards and backplanes. Franz’s presentation explored these phenomena in a riveting and understandable way. He suggested different approaches to analyzing high speed PCB and backplane interconnects. He also provided an example of using sophisticated 3D computer modeling codes to directly solve for the electric and magnetic fields in the regions surrounding the “guiding” traces and associated ground return planes. In December, the Chapter did not meet and instead promoted its upcoming “Bruce Lee Show” scheduled for January 20 with speakers Bruce Archambeault and Lee Hill. Look for coverage of this event in the next Newsletter! It promises to be an awesome event. As always, if you happen to be in Seattle, please check out the website www.ieee-seattle.org and see if a chapter meeting is scheduled during your visit. If so, please feel free to join us!

Northwest EMC put on quite the spread for the October Seattle EMC Chapter meeting!


A small, but intent group was present for the Seattle EMC Chapter’s November meeting with Franz Gisin (white shirt, middle left) as speaker.


Franz Gisin of Sanmina-SC (seated) and Pat André of André Consulting get the audio-visual working prior to Franz’s presentation to the Seattle EMC Chapter.



Following the November meeting, Pat André (left), Chair of the Seattle EMC Chapter, presented Mark Chase of CKC Labs with an IEEE Seattle Section award. The award recognized CKC Labs as “Small Company of the Year.”


It’s a line up of Seattle EMC Chapter officers with guest Derick Skouby from HP Vancouver (center). That’s Dean Busch, Treasurer, Stephen Stimac, Secretary (note he got into the spirit of the October Fest meeting theme!), Pat André, Chairman, and Mark Chase, past Secretary and back up photographer (from left).


Varuzhan Kockaryan of Northwest EMC (left) enjoyed a presentation laugh with Angus McGill at the October Seattle EMC Chapter meeting.



Singapore
The Singapore Chapter had been largely dormant for the most part of 2003. On March 11, 2003, the Chapter welcomed Cheung-Wei Lam of Apple Computer in Cupertino, California to speak on the topic of “Signal Integrity Design versus Radiated Emission Control”. Dr. Lam is a Distinguished Lecturer of the EMCS. This meeting was held at the Institute of High Performance Computing (IHPC) and was well attended with 55 participants. A lull in meetings then followed due to the outbreak of SARS in Singapore. It was not until November that the second meeting was held with Professor Michel S. Nakhla of Carleton University in Canada speaking on the issue of “Recent Advances in Modeling and Simulation of High-Speed Electronics, EMC/EMI, and Electronic Packaging”. The November meeting was jointly organized with the CPMT (Components, Packaging, and Manufacturing Technology Society) and IHPC. It was well attended by 33 participants. The last meeting of 2003 was held on December 3 at the DSO National Laboratories (http://www.dso.org.sg). Professor Christos Christopoulos, from Nottingham, U.K., spoke on the topic of “Shielding and Coupling Inside Equipment Cabinets.” Professor Christopoulos compared some S.E. (shielding efficiency) results from the use of intermediate modeling tools to those obtained from measurements. The participants had a glimpse of some of the modeling techniques that characterize arrays of holes and perforations as a set of DFI (digital filter interface) parameters for TLM. After the seminar, a special general meeting was convened amongst the EMCS members to elect officers for the Singapore Chapter for 2004. 33 members and friends attended the meeting in December. EMC

 

Attendees listen intently during the presentation last March in Singapore by Cheung-Wei Lam of Apple Computer.


At the December meeting in Singapore, Professor Christopolos gives his presentation to a receptive audience. Dr. See, Chairman, (right) listens to a question from the audience.

 


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