1996/1997 Monthly Chapter Meeting Notices
- September 10, 1996: Annual Social and Planning
Session
- October 8, 1996: "Demonstration and
Measurement of the Effects of a Transient Suppression Plane on ESD"
by Douglas C. Smith, Auspex Systems
- November 12, 1996: "EMC Measurement
Uncertainty" by Edwin L. Bronaugh, EdB - EMC Consultants
- December 10, 1996: "Physics and Testing
of ESD" by David Pommerenke, HP
- January 14, 1997:"High Intensity Radiated
Fields (HIRF) Testing" by Roger A. McConnell, CKC Laboratories, Inc.
- February 11, 1997: "Taking the Black Magic Out of Grounding"
by Hugh W. Denny (IEEE EMC Society, Distinguished Lecturer).
- March 11, 1997: "Joining of Two Conductors
for EMI/ESD Protection"
by Richard Haynes, Richard Haynes Consultants.
- April 8, 1997: "Numerical Methods in EMC"
by Professor Jose Perini, Syracuse University.
- May 13, 1997: "Lessons Learned in Designing PCBs
for EMC" by John B. Howard, EMC Consultant for ElectroMagnetic
Compatibility by Design.
September '96 Meeting Notice
- When/Where
- Tuesday, September 10, 1996. Piano Bar, Apple Computers, 4 Infinity Loop,
Cupertino, CA. 5:00 p.m. - 8:00 p.m.
- Topic/Speaker
- Annual Social and 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 10 from 5:00 to 8:00 p.m. The meeting
will be held at the Building 4 Piano Bar at the Apple headquarters in Cupertino.
Refreshments
and hors d'oeuvres will be served, and live entertainment will be provided by
Mr. Brian Yoshida. Brian is an award winning pianist, guitarist, who is a two
time Grammy Award nominee and a BAMMIE winner, and will play selections from
classical, easy listening, rock, blues, show tunes. He will also take requests.
The Chapter has invited Thor
Benzing, a recent graduate of Live Oak High School, to come to the social and
demonstrate some of his science fair projects based on a Tesla Coil. His first
project involved using the coil to determine effects of RF on different types of
materials. The next project was to use the Tesla coil in conjunction with a
radio to improve the measurement results. His most recent project was to build
an enclosure around the coil such that it passed FCC Class B limits. Thor was
awarded first place at the Santa Clara County Science Fair, plus received a
$50.00 award from IEEE Safety Technical Committee, as well as an Honorable
Mention Award from the US Army. Thor will be describing the steps he used at the
Tandem Laboratory to design an appropriate containment around the RF generated
from the Tesla Coil.
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; electrostatic discharge; 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 any of the Chapter ADCOM
members.
October '96 Meeting Notice
- When/Where
- Tuesday, October 8, 1996. Cocktails (5:00 pm) and dinner (5:30 pm) at
Chilis, 20060 Stevens Creek Blvd (between DeAnza Blvd and Blainey), Cupertino.
Technical meeting at Apple Computers, 4 Infinity Loop, Cupertino, CA at 7:30 pm.
- Topic/Speaker
- "Demonstration and Measurement of the Effects of a Transient
Suppression Plane on ESD" by Douglas C. Smith, Auspex Systems.
- Details
- On October 8 the Santa Clara Valley Electromagnetic Compatibility Society
will hear a presentation by Douglas Smith, of Auspex Systems, on the topic
"Demonstration and Measurement of the Effects of a Transient
Suppression Plane on ESD".
The effects on high frequency
current flowing in a conductor of a transient suppression plane can be dramatic.
This talk will cover some of the basics of making high frequency measurements
with matched current probes and then apply the concepts to the measurement of
the effects of a transient suppression plane on an ESD generated current.
The
results of the demonstration are dramatic and point to practical uses of
transient suppression planes and the care that must be taken when making
measurements of ESD effects.
Mr. Smith graduated from Vanderbilt
University with a BSEE degree in 1969 and received and MSEE degree from the
California Institute of Technology in 1970. He then joined Bell Telephone
Laboratories as a Member of Technical Staff. Currently, he is Manager of EMC
Development and Test at Auspex Systems. Mr. Smith has been granted fourteen
patents, including one in system level ESD mitigation and three on high
frequency measurement apparatus. Mr. Smith has lectured at Vanderbilt
University, AT&T Bell Labs, and many public and private seminars on topics
including high frequency noise measurement techniques, system level ESD, and
Pulsed electromagnetic interference. He was a Distinguished Member of Technical
Staff at AT&T Bell Labs, is a senior member of the IEEE, and author of the
book "High Frequency Measurements and Noise in Electronic Circuits",
published by Van Nostrand Reinhold, Inc.
November '96 Meeting Notice
- When/Where
- Tuesday, November 12, 1996. Cocktails (5:00 pm) and dinner (5:30 pm) at
Chilis, 20060 Stevens Creek Blvd (between DeAnza Blvd and Blainey), Cupertino.
Technical meeting at Apple Computers, 4 Infinity Loop, Cupertino, CA at 7:30 pm.
- Topic/Speaker
- "EMC Measurement Uncertainty" by Edwin L. Bronaugh,
EdB - EMC Consultants
- Details
- On November 12 the Santa Clara Valley Electromagnetic Compatibility Society
will hear a presentation by Edwin L. Bronaugh, EdB - EMC Consultants, on the
topic
"EMC Measurement Uncertainty"ESD".
This
month's presentation will review the material Mr. Bronaugh presented at the 1996
IEEE Symposium on EMC at Santa Clara in August. The talk will also include
material from the Uncertainty Workshop to be held in Los Angles on November 11.
The talk will start off with a review of the paper presented in August and then
will go deeper into the subject of uncertainty in EMC measurements. Mr. Bronaugh
plans to expand on each topic which was brought up in the Symposium paper. He
expects to have lots of interaction with the audience in the form of questions,
audience opinions, discussion, and answers.
Mr. Edwin L. (Ed) Bronaugh
is a Fellow of the IEEE and an Honorary Life Member of the EMC Society. He has
often served on the EMC Society Board of Directors, and is a past president of
the Society. He is also a distinguished lecturer on EMC topics. He is a member
of the EMC Standards Committee and represents IEEE on ANSI-Accredited Standards
Committee C63; of which he is Vice Chairman. He has received a number of awards
from the IEEE Society, including the Lawrence G. Cumming Award and the Richard
R. Stoddart Award. He is co-author of a book on EMI measurements and over 100
papers. He is a NARTE-Certified EMC Engineer. He is a member of the SAE EMI and
EMR Standards Committees, and the Aerospace EMC Committee AE4; and Alpha Phi
Omega. He is listed in Who's Who in America, Who's Who in the World, Who's Who
in Science and Engineering, and Men of Achievement. Mr. Bronaugh is Principal of
EdB EMC Consultants, and independent EMC consulting firm. Previously, he was
Vice President for Engineering at the Electro-Mechanics Company, Technical
Director of Electro-Metrics, and Manager of EMC Research at Southwest Research
Institute
December '96 Meeting Notice
- When/Where
- Tuesday, December 10, 1996. Cocktails (5:00 pm) and dinner (5:30 pm) at
Chilis, 20060 Stevens Creek Blvd (between DeAnza Blvd and Blainey), Cupertino.
Technical meeting at Apple Computers, 4 Infinity Loop, Cupertino, CA at 7:30 pm.
- Topic/Speaker
- "Physics and Testing of ESD" by David Pommerenke,
HP.
- Details
- On December 10 the Santa Clara Valley Electromagnetic Compatibility Society
will hear a presentation by David Pommerenke, HP, on the topic
"Physics and Testing of ESD".
David Pommerenke
will discuss two important aspects of ESD testing. The first addresses the
issue of why air discharge seem to be so unrepeatable, and will cover the
dominant variables that contribute to this aspect of ESD including charge and
voltage, arc initiation, arc resistance, object impedance, currents, transient
fields, and lower rise time limit.
Knowing the physical parameters
which determine the severeness of ESD the second part of the talk will compare
ESD testing with real ESD guided by the following key questions: Is the
standard rise time realistic ? What are unintended radiations? How similar are
different brand simulators ?
David Pommerenke was born April 11, 1962
in Ann Arbor. He received his diploma in Electrical Engineering in 1989 from the
Technical University Berlin. He worked at the same university from 1990 until
1996 as research and teaching assistant in EMC and High Voltage. In 1995 he
received his Ph.D. on 'Transient Fields of ESD'. Since August 1996 he's been
employed as an EMC Engineer for the HP Roseville site responsible for the test
an implementation of new EMC methods. Over the past several years he has
published 20 papers on system level ESD, the breakdown process, numerical
calculation of ESD, high voltage partial discharge detection systems and on
project oriented teaching.
January '97 Meeting Notice
- When/Where
- Tuesday, January 14, 1997. Cocktails (5:00 pm) and dinner (5:30 pm) at
Chilis, 20060 Stevens Creek Blvd (between DeAnza Blvd and Blainey), Cupertino.
Technical meeting at Apple Computers, 4 Infinity Loop, Cupertino, CA at 7:30 pm.
- Topic/Speaker
- "High Intensity Radiated Fields (HIRF) Testing" by Roger A. McConnell,
CKC Laboratories, Inc.
- Details
- On January 14, the Santa Clara Valley Electromagnetic Compatibility Society
will hear a presentation by Roger A. McConnell, CKC Laboratories, Inc., on the topic
"High Intensity Radiated Fields (HIRF) Testing".
When solid state communications equipment started being installed in
aircraft, more than 30 years ago, it was discovered that this equipment was
very susceptible to failure from electrical sources both within and outside
the aircraft. It was slowly learned that modern equipment required more
protection than had been required with vaccum tube equipment. With the
advent of digital avionics and fly-by-wire electronic control of flight
critical functions, it became imperative to closely examine the
possibilities of harmful interference from both on board equipment and from
external sources of radio frequency fields.
HIRF deals with the susceptibility of aircraft to interference from
external sources, such as short wave broadcast, military IFF equipment, and
radar systems, both ground based and airborne. In this talk, some actual
HIRF incidents will be described, and the history of HIRF concerns from the
early 1980 s to the present will be reviewed.
Roger McConnell has been with CKC Laboratories, Inc. in Mariposa,
California since 1986. He retired at the end of September 1996 and is now
working as a part time consultant to CKC. His primary EMC activities have
been in open field range calibration, anechoic room performance, and energy
transfer in EMP. He has been a member of the Society of Automotive Engineers
AE4R Subcommittee which has been advising the Federal Aviation
Administration in connection with the threat to aircraft from high energy RF
fields. Prior to his employment at CKC, Mr. McConnell was employed for 24 years
at the Stanford Linear Accelerator Center in technical support of high
energy physics research. He specialized in the design of very high power CW
RF systems, accelerator cavities and phase stable transmission lines. He has
co-authored a number of papers relating to particle accelerator
radio frequency systems which have appeared in the IEEE Symposiums on
Nuclear Science, and has authored six papers on open field range calibration
and EMP which have appeared in the IEEE Symposium on EMC. He is a graduate in
Electrical Engineering from the University of California at Berkeley.
Frebruary '97 Meeting Notice
- When/Where
- Tuesday, February 11, 1997. Cocktails (5:00 pm) and dinner (5:30 pm) at
Chilis, 20060 Stevens Creek Blvd (between DeAnza Blvd and Blainey), Cupertino.
Technical meeting at Apple Computers, 4 Infinity Loop, Cupertino, CA at 7:30 pm.
- Topic/Speaker
- "Taking the Black Magic Out of Grounding" by Hugh W. Denny
(IEEE EMC Society, Distinguished Lecturer).
- Details
- On February 11, the Santa Clara Valley Electromagnetic Compatibility Society
will hear a presentation by Hugh W. Denny (IEEE EMC Society, Distinguished Lecturer),
on the topic "Taking the Black Magic Out of Grounding".
Grounding has long been considered a nemesis of the electronics and
communications world. EMC practitioners have often referred to grounding as
"black magic." The reasons for the mystery surrounding grounding are that
(1) it is often left to chance or is ignored until the design is hardening,
(2) low frequency grounding techniques are presumed to work at radio
frequencies, and (3) fundamentals of electromagnetics are ignored. This
presentation reviews the basics of grounding networks and sets forth design
principles for all frequencies. The needs of all "users" are considered in
the development of an integrated approach to grounding.
Mr. Denny, for 35 years, lead research teams on the development of
grounding, bonding, shielding and lightning protection guidelines for the
United States air traffic control system, the Department of Defense
long-haul communications network, the Metropolitan Atlanta Rapid Transit
system traffic control facilities, and communications and information
processing complexes. For 20 years, he directed research faculty conducting
sponsored programs in electromagnetic interference control including
lightning protection, electromagnetic pulse and high power microwave
hardening, and program management guidelines. Mr. Denny has developed
electromagnetic interference (EMI) test procedures and instrumentation, and
electromagnetic compatibility (EMC) specifications and limits for equipment
and systems, both domestic and international. For 15 years, he provide
designs and guide specifications for the grounding, shielding and lightning
protection of military and civilian facilities.
March '97 Meeting Notice
- When/Where
- Tuesday, March 11, 1997. Cocktails (5:00 pm) and dinner (5:30 pm) at
Chilis, 20060 Stevens Creek Blvd (between DeAnza Blvd and Blainey), Cupertino.
Technical meeting at Apple Computers, DeAnza 3, Mariani Ave, Cupertino, CA at 7:30 pm.
- Topic/Speaker
- "Joining of Two Conductors for EMI/ESD Protection" by
Richard Haynes, Richard Haynes Consultants).
- Details
- On March 11, the Santa Clara Valley Electromagnetic Compatibility Society
will hear a presentation by Richard Haynes, Richard Haynes Consultants,
on the topic "Joining of Two Conductors for EMI/ESD Protection".
One of the most common trouble spots is the electrical discontinuity at
the interface between two conductors. Also, secondary ESD events can be
caused by electrical discontinuities at interfaces between two conductors.
Material choices of such joints are usually compromises between the minimum
impedance and the maximum corrosion resistances of the interface. It is
possible to calculate the time to failure for a given set of conditions.
This talk reviews: (1) conductive materials and surface finishes commonly
used in the proper choice of materials. Also discussed are design guidelines
for joints that should be used in electronic products.
Dr. Richard Haynes graduated with a Ph.D. in electrochemistry from the
University of Pennsylvania and completed a Post-Doctoral in the areas of Li,
N, H Magnetic and Electron Spin Resonance in Metal Solutions. After a
distinguished 26 year career he recently retired from AT&T; Bell
Laboratories. During this period, Dr. Haynes developed expertise in: metal
finishing, industrial ecology, reliability, corrosion and film growth,
battery technology for portable products, EMI shielding technologies and
design, and applications of magnetic probes to EMC. His work has resulted in
7 patents (2 more pending) and over 35 technical papers with 53 technical
presentations to professional societies. Dr. Haynes is a member of The
Electrochemical Society, American Electroplaters and Surface Finishers
Society and ASTM serving on several committees such as Metal Finishing and
EMI Materials. He worked on a team that was awarded the IR100 Award given
for the Best Industrial Development during 1983 and more recently earned the
AT&T; Global Manufacturing and Engineering 1995 Technical Excellence Award.
Dr. Haynes started a consulting business and serves as consultant for
several large companies.
April '97 Meeting Notice
- When/Where
- Tuesday, April 8, 1997. Cocktails (5:00 pm) and dinner (5:30 pm) at
Chilis, 20060 Stevens Creek Blvd (between DeAnza Blvd and Blainey), Cupertino.
Technical meeting at Apple Computers, DeAnza 3, Mariani Ave, Cupertino, CA at 7:30 pm.
- Topic/Speaker
- "Numerical Methods in EMC" by
Professor Jose Perini, Syracuse University.
- Details
- On April 8, the Santa Clara Valley Electromagnetic Compatibility Society
will hear a presentation by Professor Jose Perini, Syracuse University,
on the topic "Numerical Methods in EMC".
Since it is much more important for the user of these techniques to
understand their physical principles rather than their mathematical
foundations, the presentation will be mostly on the physical principles.
From this it will be easier to understand the limitations of each technique.
There are a very large number of Numerical Techniques that can be used
in EMC. Due to the short time available I will only talk about three of the
most popular ones. They are the Method of Moments, The Finite Element, and
the Finite Difference Time Domain Techniques. If time permits, I will touch
a little on the Geometrical Theory of Diffraction.
Professor Perini was born in Sao Paulo, Brazil. He graduated from
Escola Politecnica de Sao Paulo, as an Electrical and Mechanical Engineer in
1952. He worked as the Manager of Radio Maintenance for one of the largest
Airlines in Brazil and then returned, in 1956, to Escola Politecnica as an
Assistant Professor of Electrical Engineering. In 1958 he came to Syracuse
University where he obtained his PhD in EE in 1991. During this time he also
consulted for General Electric Company in the design of Television
Transmitting Antennas. He then returned to Brazil to his teaching position
in Escola Politecnica. In 1962 he returned to Syracuse University to teach
Electrical Engineering where he retired in 1991. During his stay at Syracuse
he had many research contracts with the Air Force, Navy, and Army. He was
also a consultant for many industries. Professor Perini has published and
presented many papers and has also given many invited tutorials. He is a
Fellow of the IEEE, a Life Member of the EMC Society, and a NARTE Certified
Engineer. He is also reviewer for the IEEE Transactions on EMC, AP, MTT, and
Education.
May '97 Meeting Notice
- When/Where
- Tuesday, May 13, 1997. Cocktails (5:00 pm) and dinner (5:30 pm) at
Chilis, 20060 Stevens Creek Blvd (between DeAnza Blvd and Blainey), Cupertino.
Technical meeting at Apple Computers, DeAnza 3, Mariani Ave, Cupertino, CA at 7:30 pm.
- Topic/Speaker
- "Lessons Learned in Designing PCBs for EMC" by
John B. Howard, EMC Consultant for ElectroMagnetic Compatibility by Design.
- Details
- On May 13, the Santa Clara Valley Electromagnetic Compatibility Society
will hear a presentation by John Howard, EMC Consultant for ElectroMagnetic
Compatibility by Design, on the topic "Lessons Learned in Designing
PCBs for EMC".
The EMC Problems associated with hardware/PCB design often result from
outdated or misapplied practices. This presentation will highlight a few of
these practices and offer some alternatives and solutions. The perspective
will generally be from experiences gained in improving the EMC engineering
on a variety of new high performance products. Discussion will focus on the
impact of vias, power/ground plane noise, bypass capacitance, transmission
line structures, and the application of ferrites. Some thoughts will be
offered on emerging chip/package EMC issues.
John Howard is currently working as an independent EMC consultant with
over eighteen years of EMC engineering experience. John has been an EMC
consultant for the past four years. He earned BSEE and MSEE degrees prior to
working for several bay area companies as a hardware design engineer,
engineering manager, scientific researcher, and EMC design engineer. He has
authored or co-authored several technical papers on the subject of design
for EMC compliance. John is also the lecturer for EMC courses offered
worldwide by the University of Wisconsin. He is a NARTE registered
professional EMC Engineer, a Senior Member of the IEEE, and Chairman of the
University Grant Subcommittee of the IEEE EMC Society Education Committee.
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