SANTA CLARA VALLEY CHAPTER OF THE IEEE EMC SOCIETY |
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1999/2000 Monthly Chapter Meeting Notices
September '99 Meeting NoticeWhen/Where: Tuesday, September 14, 1999. Silicon Graphics� Caf� Iris, Building 5, 2025 Stierlin Court in Mountain View, CA.5:00 p.m. - 8:00 p.m. Topic/Speaker: Annual Social and Business Planning Session Details:The Santa Clara Valley Electromagnetic Compatibility Society invites all EMC Society members and prospective members to attend the annual social and planning session on Tuesday, September `4, 1999 from 5:00 PM to 8 PM. The meeting will be held at the Silicon Graphics Caf� Iris, Building 5, 2025 Stierlin Court in Mountain View, CA. Refreshments and hors doeuvres will be served, with live musical entertainment. The Chapter also invites prospective speakers to attend this session and submit presentation outlines for consideration. Suggested topics include: Measurements (techniques, technology, problems, corrections, calibration); test facilities (shielded rooms, open field test sites, screen rooms, anechoic and semi-anechoic chambers); EM noise sources and studies; design for reduced noise; antennas and propagation; EMC standards and regulations; and computer aided analysis and design. Anyone interested in presenting an outline of these or other appropriate topics should contact Hans Mellberg at (831) 454-9450 or (email: [email protected]). Additional information is also available at the chapter website: www.scvemc.org.
October '99 Meeting Notice
November '99 Meeting Notice
Dr. Wheeler will show the importance of modeling z-axis noise in VLSI
packages, sockets and PCB's. This
noise, also known as SSO noise, is a major contributor to high performance
system failure during debug and bring up due to inadequate modeling or noise
analysis during design, as well as a source for EMI. The talk will:
1. Show a theoretical basis for SSO models.
BIOGRAPHY:
Dr. Wheeler
started his own consulting business, Wheeler Enterprises, in Nov. 1996, after
managing R&D departments at Hewlett Packard Laboratories and Fujitsu
Computer Packaging Technologies. He played a key role in inventing a new type of
interconnect between VLSI chips and PC boards. The new interconnect will allow
computer CPUs to operate at clock frequencies well above 1000 MHz. He developed the tools to predict and
measure the hardware performance and submitted thirteen patent disclosures
relating to high speed interconnect. He is currently a consultant to mid and senior level management regarding
CMOS design, signal integrity and VLSI packaging issues.
He has over 26 years experience
-Employee 5 in startup company, managing R&D activity.
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- "Biological Hazards from RF Energy" - In recent weeks the media has aired stories warning cell phone users about possible links between cancer and exposure to RF and microwave energy, with countering stories that dismiss these studies as failing to show any such links. Whether or not cell phones use increases risk of contracting certain brain cancers is a matter of continuing debate and research, but it has been known since the beginning of radio science that exposure to high levels of RF can cause skin burns and tissue damage due to RF induced heating, the same way that microwave ovens elevate the temperature of food. This talk will be an overview of RF hazard testing and regulations, with some discussion of ANSI, FCC and OSHA regulations limiting RF exposure hazard, specific absorption rate (SAR), measurement equipment and techniques, and how local industries (such as semiconductor manufacturing equipment vendors and wireless system installers) are affected by the requirements of the regulatory agencies.THOMAS N. COKENIAS is an EMC consultant from the SF Bay area. He spent 8 years as an engineer with the Equipment Authorization Branch at the FCC Laboratory in Columbia MD, working mostly with Part 15 transmitters and other unlicensed RF devices. He served 12 years as VP engineering of Electro Service Corporation, an independent EMC test laboratory in Belmont,CA, and for the last 5 years has been an independent consultant with special interests in wireless device certifications , in situ EMC testing, and helping clients prepare for laboratory accreditations. Mr. Cokenias is a member of the Ultra Wideband Working Group and serves as an officer in the Santa Clara Valley IEEE EMC Society chapter. - "Safety and the Use of EMI Filters" - GARY LIU has a BSEE from Cal State LA, 1990. Joined UL in June of 1990. Gary worked in Sec. G the entire time, worked on products including audio, video, and tv products, some transformers and motor operated appliances, some EMI filters and havily involved in TVSS (surge suppressors) and power strip in the last few years.
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January 2000 Meeting Notice
-Mark Montrose EMI and the PCB � Fundamental Concepts and Design Techniques This presentation illustrates, in simplified
form, how and why EMI gets developed within a printed circuit board (PCB) and
the manner in which propagation occurs; radiated or conducted. Basic concepts
are examined to remove the mystery on why problems are designed into a product,
and how one can prevent making mistakes from happening time and time again. A
major focus on 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 advise 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 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. The last portion of the talk will illustrate
several design techniques that can be immediately implemented that have a long
track record of success. At the completion of the talk, an open forum session
will occur where any question related to EMI and PCB can be asked. This forum
will last until it is time to get kicked out of the facility. BiographyMark 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 includes extensive design, test and certification of Information
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. He holds membership in the dB Society and TC-8,
Product Safety Technical Committee. 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 translations in process), and is a contributing author to the Electronics Packaging Handbook, 1999 (CRC/IEEE Press).
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February 2000 Meeting Notice
Simultaneous Switch Noise, Power Plane Bounce and EMI Biography Larry D Smith received the BSEE degree from Rose Hulman Institute of Technology in 1975 and the MS dregree in Material Science from the University of Vermont in 1983. After joining IBM in 1978, he worked in the areas of reliability, characterization, failure analysis, power supply and analog curcuit design, packaging and signal integrity at Sun Microsystems since 1996. His current area of concentration is design of power distribution systems and reduction of simultaneous switch noise. | top of this page | March 2000 Meeting Notice
Details:
Biography:
| top of this page | April 2000 Meeting Notice
Details:
Biography:
Prior to 1990, Mr. German was a Senior Engineer at
the IBM Boulder EMC Laboratory where he was responsible for reducing the
radiated emissions and improving the RF immunity of printed circuit boards used
in diskette drives, printers, and copiers. Furthermore, he developed techniques
for performing radiated EMI measurements and evaluating test sites in the
VHF/UHF range. Mr. German pioneered the volumetric site-attenuation measurement
technique for alternate test-sites specified in ANSI C63.4 and EN 55022,
explored the use of a monopole antenna for EMI and site-attenuation
measurements, and instituted three research projects at the University of
Colorado to predict and optimize the performance of RF semi-anechoic chambers.
From 1974 to 1979, Mr. German developed
communications software for facsimile machines, laser printers and ink-jet
printers at IBM Boulder. He also investigated open waveguiding structures using
a microwave model while pursuing the MSEE degree.
He received the MSEE degree from the University of
Colorado, Boulder in 1979, the BSEE degree from the University of Miami, Coral
Gables, FL in 1974, and was born in Bridgeport, CT in 1952. | top of this page | May 2000 Meeting Notice
Details: The presentation includes a brief theoretical analysis of each of the different kinds of propagating modes, the effect the PCB edge has on each mode, and how fences and pulled-back power planes affect the total radiation efficiency from the PCB edge. The presentation also includes several time-domain animations that enhance the physical understanding of how these propagating modes produce radiation along PCB edges.
Biography:
Franz Gisin is EMC Manager at Nortel Networks. He received his B.S. degree in electrical engineering from the University of Idaho in 1972, and his M.S. degree in Applied Mathematics from the University of Santa Clara in 1986. Franz has been active in the EMC community for over 25 years, and has published numerous papers ranging from measurement uncertainties associated with 1/R extrapolation on OATS to mechanisms of common mode radiation from PCBs with attached cables. He is a past EMC Society Distinguished Lecturer and a past member of the EMC Society Board of Directors. Currently he is steering committee chair of the 2004 IEEE International Symposium on Electromagnetic Compatibility. He also teaches electromagnetics (on a part-time basis) at SFSU. Also, our annual election for secretary will be held prior to the presentations. For nominations, questions or to volunteer, please contact Franz Gisin at [email protected]. | top of this page | |
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