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Course #45
EMC Engineering for Wired and Wireless Electronics
New date to be decided.
Available as a corporate-exclusive / tailored course at your site.
Please contact Ms Elisabet Larsson for an offer:
cei@cei.se Phone: +46-122-17570 Fax: +46-122-14347
INSTRUCTOR
Dr
Anatoly Tsaliovich, ATInternational, West Windsor, N.J., USA
TECHNOLOGY FOCUS
Modern electronics defies engineers to reduce electromagnetic interference (EMI) between circuits and systems and comply
with national and international EMC regulations and standards: European EMC Directive, FCC, VCCI, BCIQ, and others. Failure to
achieve these goals negatively affects product quality and may be a barrier to innovative product development, marketing, and
sales in world markets. Of course, numerous EMI mitigation techniques exist, yet the challenge is to correctly select and apply
the EMI control to different system levels in all but infinite number of applications and system designs. Indeed, a decoupling
capacitor here, a grounding drain there, a certain PCB layout scheme or a shielded cable at a product or network level
may help (or not!), but it is only when all these and other techniques are applied systematically, according with system approach
based scientific principles, the EMC design complexities can be successfully resolved.
COURSE OBJECTIVES
This comprehensive EMC engineering course is aimed to arm electronics and telecom product and system designers, developers,
testers, and managers, with state of the art hands on EMC engineering skills. Both theory and practical techniques to reduce radiation
and crosstalk, improve immunity, and cut intra-system and circuit noise are covered and supported by numerous
examples from the instructor’s experience in the field and literature, demonstrations, simulations,
and workshops, while the mathematical background can be found in the recommended textbook by the author. Ample opportunities
will be created to raise questions relevant to participants’ working
projects.
Monday
EMI/EMC Fundamentals
A pointed study of the real life case histories is used to introduce and explain the basic EMI phenomena and EMC concepts. The necessary
definitions and limits are formulated, and explained, as well as the commonalities and differences between the EMC regulations and
standards in the USA, Europe, and Asia. Using the EMI channel concept, we develop and review the system model of EMI generation,
coupling, and propagation from the source to the receiver (victim), as well as EMI controlling factors.We finish the day with a workshop addressing
Biological Safety of a wireless product and a surprising electromagnetic coupling problem.
- EMI/EMC for Electronics and Telecom Professionals
- EMC Phenomena, Definitions, Limits
- USA/European/Worldwide EMC Compliance Standards and Compliance Routes; CE Mark
- EMI Channel and Controlling Factors
- Modeling and Integration of Sources, Receivers, and Electromagnetic Coupling
Workshop: Cell Phone Specific Absorption Rate (SAR); Interplanetary Electromagnetic Coupling
Tuesday
EMC Design Rationale and Techniques
System approach is applied to formulate the EMC design objectives and EMI control strategies. Based on EMI channel concept, the electrical,
physical, and software EMC design choices are identified to address the radiating and conducting emissions, immunity, and crosstalk
in modern wired and wireless systems. We will delineate a comprehensive set of EMI control strategies and techniques, resulting in a
complete EMI control matrix.Today, we will implement the formulated principles at the most general system level, with the study of
EMC aspects of the spectrum management, IC selection, and interconnection design. Through case studies and at
the workshop we will consider specific EMI control problems and solutions.
- EMC Design Criteria, Alternatives, and Strategies
- Five EMC Study Principles and Six Elements of EMC Engineering
- EMC Design Choices
- EMC Design Through Spectrum Management and Signal Synthesis
- Spread Spectrum Clock
- Interconnection and Cabling Design for EMI Control
- High Speed and Electrically Long Interconnections and Lines
- To Match or Not to Match
Workshop: Wi-Fi, BlueTooth, ISDN Electromagnetic Compatibility
Wednesday
Physical and Electrical Circuit Design for EMI Control
Cure disease, not the symptoms! We will review the sources of major EMC problems and suggest solutions for ground and power system
design and circuit layout.We will analyze typical grounding and power system topologies; ground and power plane role in multi-layer PCBs
and backplanes; specifics of analogue, digital, and mixed technology layout, techniques to control ground loop effects; ground bounce and
common return path coupling mitigation. We will recommend optimal design techniques for radiating area reduction, system and PCB
zoning and partitioning, efficient multi-layer PCB stack up. Case studies and workshop will be used to illustrate the implementation of the
developed principles.
- No More Grounding Magic
- Analog and Digital EMC Design
- Printed Wiring Board and Backplane Layout for EMI Control
- Large System and Mixed Technology Circuit Partitioning
- When to Partition the System?
- Synthesizing EMI Sources
- Optimal Clock Line Layout
Thursday
EMI Decoupling Techniques
We will systematically study and expand on the EMI decoupling, providing working knowledge of these useful techniques. We will compare
the physics and utility of the capacitive and inductive decoupling, common and differential mode decoupling, lumped and
distributed decoupling.We will address circuit balancing and filtering in the context of circuit decoupling. Through case studies and at the
workshop, we will illustrate the application of decoupling techniques
to important practical projects.
- Electric (Capacitive) Decoupling
- Magnetic (Inductive) Decoupling
- Discrete, Distributed, and Embedded Decoupling
- Filtering and Balancing
Workshop Problems: Wireless Plug-in Computer Card; Switch Mode Power Supply
Friday
EMI and EMC Evaluation Techniques and Tools
The final day is dedicated to the study of EMI troubleshooting techniques and EMC compliance measurements. The “nuts and bolts”
methodology used in the discussion is spearheaded towards the development of physical understanding and practical skills.We will cover
EMI evaluation and troubleshooting objectives, tools, logistics, and measurement interpretation.
- The EMC Measurement Rationale
- EMC Test Equipment
- EMC Test Facilities
- EMC Test Procedures
- EMI Troubleshooting
- EMI/EMC Evaluation
- Case Histories and Studies
EMC Measurement Workshop: Measurement-related Problems
Bring your own calculator to the course!
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