EMC Fest 2011 Homepage

EMI shielding, design and measurements methods for product development
Antenna behavior for EMC engineers
Measurements and modeling two very similar issues

Werner Schaefer

Absorber Placement for Achievement of Free-Space Conditions
Measurement of Impulsive Signals with a Spectrum Analyzer or EMI Receiver
Significance of EMI Receiver Specifications for Commercial EMI Compliance Testing

Colin E. Brench colin.brench@ieee.org

Colin Brench Biography:

Colin Brench received his B.Sc. (Honours) in Electronic Engineering at The City University, London, in 1975. He has been particularly active in the areas of antenna and shielding behavior and EMC since the early 1970's.

In his current position at Amphenol TCS, Colin is responsible for the EMC aspects of high data rate (10 to 25 Gb/s) interconnect schemes. His previous position was at Southwest Research Institute (SwRI) in San Antonio where he was a staff engineer in the Electromagnetic Compatibility Research group. His responsibilities at SwRI included developing new EMC technologies and providing consulting and training. Previous to that, he worked for 21 years at Hewlett-Packard (formerly Compaq Computer Corporation, formerly Digital Equipment Corporation) where he was involved in a wide range of server, workstation, and networking products.

Mr. Brench has presented numerous EMC training classes that embrace a broad range of topics including microprocessor packaging, printed circuit module issues, system design and shielding. He is a co-author of the book, EMI/EMC Computational Modeling Handbook (Kluwer Academic, 2nd Edition 2001), and has authored over 20 technical papers and articles. In addition, he holds 12 patents for various methods of EMI control, and others are in process. Mr. Brench was appointed a Distinguished Lecturer for the IEEE EMC Society for 2001 and 2002. In 2002 he was awarded the Certificate of Technical Achievement by the IEEE EMC Society for his contributions to the development of EMC modeling directed to understanding EMI shielding and antenna behavior.

Mr. Brench is a Senior Member of the IEEE, a member of the EMC Society since 1980, and has been an iNARTE certified EMC Engineer since 1990. He is also active in IEEE EMC-S standards, IEEE EMC-S Technical Committee 9 (TC-9), and ANSI ASC63. He has just completed serving a second term on the IEEE EMC-S Board of Directors (2008 through 2011).

Colin Brench Abstracts:

EMI shielding, design, and measurements methods for product development

EMI shielding is an essential part of EMI control. Simple shielding effectiveness calculations are often used as the starting point for shield design; however, there are a number of assumptions built into those equations that can result in expensive over-design or non-compliance. Today’s electronic devices are very densely packed and as a result, rather than shielding calculations, coupling effects are of greater significance. This presentation will cover the traditional approach to shielding, and use this approach as a base to expand to cover real-product, complex coupling problems.

Antenna behavior for EMC engineers

Antennas are fundamental to EMC measurements; however, the subtleties of their behavior and use for these measurements are often not fully understood. This presentation provides a detailed look at antennas as used by EMC engineers for making compliance tests and evaluating the performance of a test site. Examples will be given showing how different antennas behave under the same test conditions. In today’s EMC test standards such as C63.5, antenna behavior is addressed; however the significance is not obvious to the casual user. The value of these standards in improving the accuracy of EMC compliance testing and site validations will also be discussed.

Measurements and modeling: two very similar mindsets

Computational electromagnetic solvers have become very powerful and are now in common use for EMC design and analysis efforts. Often daunting to someone new in the field, there is an extremely close parallel between how a measurement is made and how a computer simulation is constructed. Once this similarity is understood, a lot of the mysticism is cleared away and the path is open to embrace these techniques. This presentation explains the basics of the computational approaches in use; their applications are all given in terms familiar to those comfortable in a test lab. An example is included that demonstrates a practical EMI shielding analysis and design process taken directly from an issue that involved a telecommunications server.

Werner Schaefer wsemc@cisco.com

Werner Schaefer Biography:

Werner Schaefer is a compliance quality manager and technical leader for EMC and RF/uwave calibrations at Cisco Systems’ Corporate Compliance Center in San Jose, CA. He has 29 years of EMC experience, including EMI test system and software design, EMI test method development and EMI standards development. He is the chairman of CISPR/A/WG1 and a member of CISPR/A/WG2 and CISPR/B/WG1. He also is the US Technical Advisor to CISPR/A and a member of ANSI C63, SC1/3/5/6/8, and serves as an A2LA and NVLAP lead assessor for EMI and wireless testing, software and protocol testing and RF/microwave calibration laboratories. He is an ANSI representative to ISO CASCO, responsible for quality standards like ISO 17025 and ISO 17043. He was also a member of the Board of Directors of the IEEE EMC Society from 2009 - 2010.

He is actively involved in the development of the new standard ANSI C63.10 and the revision of ANSI C63.4, mainly focusing on test equipment specifications, use of spectrum analyzers and site validation procedures. Werner Schaefer is a RAB certified quality systems lead auditor, and a NARTE certified EMC engineer. He published over 50 papers on EMC, RF/uwave and quality assurance topics, conducted numerous trainings and workshops on these topics and co-authored a book on RF/uwave measurements in Germany.

Werner Schaefer Abstracts:

Absorber Placement for Achievement of Free-Space Conditions

An explanation of the influence of ground plane and absorber treatment on results of radiated EMI measurements above 1 GHz will be provided in the introduction. The absorber treatment of test facilities which are currently used for measurements below 1 GHz is outlined and the related problems like proper absorber placement and selection of absorbing material discussed. An evaluation method, based on a time domain approach, is introduced. The concept of time domain measurements, using a vector network analyzers, will be presented, along with the advantages and limitations of this approach, as they apply to the verification of the test environment. In addition, a generic description of a measurement method, using two commercially available double ridged-guide horn antennas is explained and critical settings of the vector network analyzer are pointed out. Test results are presented which demonstrate the advantages of time domain measurements when trying to establish free-space conditions for EMI measurements above 1 GHz.

Measurement of Impulsive Signals with a Spectrum Analyzer or EMI Receiver

Spectrum analyzers and scanning receivers are used in EMI laboratories to measure two main categories of signals that are of particular importance: narrowband signals and broadband signals. The classification of a signal as narrowband or broadband is determined by the occupied frequency spectrum of the signal, relative to the resolution bandwidth (RBW) of the instrument used for measurement. The measurement of broadband signals requires specific understanding of certain instrument and signal characteristics in order to correctly interpret the displayed results. This paper explains these signal parameters and provides guidance for the proper operation of test instrumentation. In addition, practical methods for the determination of the signal characteristic will be presented.

Significance of EMI Receiver Specifications for Commercial EMI Compliance Testing

Spectrum analyzers and scanning receivers are widely used in EMI laboratories today. EMI receivers with preselection do meet all specifications in CISPR 16-1-1, including the proper weighting of pulses with pulse repetition frequencies lower than 20 Hz. Spectrum analyzers without preselection can now be used for commercial compliance testing as well, as long as the user can provide evidence that the equipment under test does not emit signals with a repetition rate of 20 Hz or less. The presentation outlines the different EMI receiver architectures and explains the main specifications per CISPR 16-1-1 (2010). In addition, the conditional use of spectrum analyzers for compliance testing will be discussed and receiver requirements summarized, which must be adhered to when testing in accordance with European norms (like EN 55022 or EN 55011) and CFR47 Part 15 (using ANSI C63.4-2003).

May 18, 2011 Schedule

7:30		REGISTRATION AND CONTINENTAL BREAKFAST
8:30	1	Session 1: Werner Schaefer Significance of EMI Receiver Specifications for Commercial EMI Compliance Testing
9:30	2	Session 2: Colin Brench EMI shielding, design and measurements methods for product development
10:30		BREAK & Exhibits
11:00	3	Session 3: Werner Schaefer Measurement of Noise-like Signals with a Spectrum Analyzer or EMI Receiver
12:00		LUNCH**
1:00	4	Session 4: Colin Brench Antenna behavior for EMC engineers
2:00	5	Session 5: Werner Schaefer Absorber Placement for Achievement of Free-Space Conditions - An Alternative Method for the Improvement of EMI Test Sites
3:00		BREAK & Exhibits
3:30	6	Session 6: Colin Brench Measurements and modeling two very similar issues
4:30		Ice Cream Social Reception Door Prizes
5:30		End

Note: The scheduled times may be subject to change without advance notice.

Participants can earn 0.6 Continuing Education Units or 6 Professional Development Hours from the IEEE, if they have an engineering background for just an extra 15 dollars. Just pick CEU Certificate $15 from the drop down materials menu on the registration page. After EMC Fest, you will be sent an email with info detailing the CEUs you have earned, as well as a printable PDF certificate.

** **Lunch will be penne pasta with marinara, roasted herb chicken, roast top sirloin, garden salad, fresh seasonal vegetables, roasted garlic redskins, coffee, tea, decaf, rolls, butter and assorted desserts.

Bookmark this page and check back here again for updates.

Tabletop exhibits will be open during registration, lunch, all breaks, and the reception. Access to tabletop displays is available during the sessions, but the displays may not be manned during those times.

Hotel Information

Comfort Suites, a Canton hotel near the Detroit Metropolitan Wayne County Airport

The Comfort Suites® hotel is conveniently situated between Detroit and Ann Arbor, near many local attractions and points of interest. This Canton, MI hotel is less than 15 minutes from the Detroit Metropolitan Wayne County Airport and The Henry Ford museum. The Oasis Golf Center and the Canton Softball Center are both only five miles away. The special room rate for any style room is $69.00. There are a LIMITED number of hotel rooms at this price. Use rate code "YAZAKI".

5700 Haggerty Road, Canton, MI, US, 48187 Phone: (734) 981-1010 Map/ Directions

Extended Stay America Hotel in Canton is offering reduced room rates for reservations. Special Room rates of $44.99 are available (queen size bed), plus tax. Internet is an additional $4.99 per stay. There are a LIMITED number of hotel rooms at this price. You must mention rate code "YAZAKI" to get this special rate and reserve your room by May 10th. After which rooms and rates are subject to availability. The Canton Extended Stay Hotel is located 14 miles from Detroit Metropolitan Airport. From I-275 take exit #25 (Ford Road/Mi-153 ) West. Travel approximately 1/4 of a mile to Haggerty Road. Turn left on Haggerty Road and proceed approximately 1/4 of a mile. Extended Stay America will be on the left at 2000 Haggerty Road, Canton, MI 48187, Phone: (734) 844-6725

Contact Cathy or Angela to make arrangements. Airport shuttle is NOT available through the hotel.

Comfort Inn – Plymouth Clock Tower is offering reduced room rates for reservations. IEEE Special Room rates of $59.00 are available (single or double occupancy), plus tax which includes free in-room internet, free deluxe continental breakfast and local calls, Complimentary Wall Street Journal, On-site Fitness Center, 24 Business Center with Copier, Fax and Printer, 24 Hour Coffee in the Lobby and Coffee Makers in the Room. There are a LIMITED number of hotel rooms at this price. You must mention "EMC Fest" to get this special rate and reserve your room by May 10th. After which rooms and rates are subject to availability. The Comfort Inn Plymouth is located 16 miles from Detroit Metropolitan Airport.
www.comfortinnplymouthclocktower.com

Contact Annette Feuerstein 734-455-8100. Airport shuttle is NOT available through the hotel.

FEE SCHEDULE
Registered Before May 1st	$25
Registered after May 1stand at the door	$50
Non IEEE Member Additional Charge	$25
Full -time IEEE University Students	$10
Retired / Unemployed IEEE Members	$10
CEU Certificate	$15
EMC Fest Record CD ROM, with advance registration	Free
Extra copy CD ROM	$25
NO REFUNDS AFTER May 1st. **Web Registration Closes at Noon EDT on 5/16/2011

EMC Fest 2011 REGISTRATION LINK

IEEE EMCFest Committee

Event Chair
Kimball Williams
Denso International
Kimball@emcsociety.org

Event Committee
Candace Suriano
Suriano Solutions
248-852-4323
candace@emcsociety.org

Vendor Exhibits & Dinner
Robert Kado
Chrysler
248-576-6915
rob@emcsociety.org

Technical Chair
Mark Steffka
University of Michigan – Dearborn
mark@emcsociety.org

Registrations & Website
Scott Lytle
Yazaki North America
734-983-6012
scott@emcsociety.org

Treasurer
Matt Feusse
Yazaki North America
6800 N. Haggerty Road
Canton, Michigan 48187
734-983-6004
matt@emcsociety.org

Proceedings
Keith Frazier
Ford Motor Company
keith@emcsociety.org

Available at EMC Fest only. Advance registrants receive one free copy at EMC Fest.

The registration fee includes one copy of the EMC Fest Proceedings, continental breakfast, lunch, and reception. The organizing committee reserves the right to substitute speakers, restrict size, or to cancel the EMC Fest. In the event EMC Fest is canceled by the organizing committee, registration fees will be fully refunded. Individuals that cancel their registration prior to May 1 will receive a full refund. No refunds will be made to individuals who cancel their registration after May 1. Attendance is limited. Registration will be confirmed on a first come, first served basis.

Registrations must register online by using the on line EMC Fest 2011 REGISTRATION FORM

Registrar

IEEE EMC Fest '2011
c/o Scott Lytle
Yazaki North America
6800 N. Haggerty Road
Canton, MI 48187

Sponsored by the Southeastern Michigan Chapter of the IEEE Electromagnetic Compatibility (EMC) Society.

http://www.emcsociety.org

EMC Fest Webmaster: scott@emcsociety.org