Fundamentals of Shielding Design for EMC Compliance     

On-site
Delivery

I.D.# C0835Printable Description
Duration: 1 Day

It is important for electronic and hardware engineers to not only be knowledgeable of a product's intended function and performance, but also its ability to perform within electromagnetic compatibility (EMC) limits. This seminar introduces practical shielding theory, design fundamentals, and configurations, including shielding products, common and differential modes, electromagnetic fields, and enclosure shielding. A segment on enclosure testing is presented in conjunction with an aperture attenuation modeling program (which is used to model attenuation characteristics at various frequencies and aperture size prior to expensive FCC/CE compliance or MIL-STD 461 testing). Honeycomb vent panels, plating attenuation comparisons, and galvanic compatibility per MIL-STD 1250 will also be discussed. Although the concepts presented in this seminar may be applicable to the automotive industry, the examples and standards presented are primarily focused on military and commercial vehicle applications.

Learning Objectives
By attending this seminar, you will be able to:

  • Identify the basic characteristics of Common and Differential Mode
  • Recognize E,H, and Plane wave fields, Surface current and "Skin effect" based on increased frequency
  • Specify Galvanic compatibility of various metal plating
  • Specify industry standard shielding products for EMC compliance
  • Evaluate waveguide effect of EMI/RFI shielded honeycomb ventilation panels
  • Analyze aperture attenuation modeling for EMC design

Who Should Attend
This seminar will benefit engineers requiring an understanding of their electronic product or system's electromagnetic impact on meeting commercial EMC and MIL-STD 461 requirements, as well as those engineers needing to incorporate shielding products into new or current product improvement designs.

Prerequisites
Attendees should have knowledge of electrical and electronic products and proficiency in mathematics at an algebra level.

Topical Outline

  • EMC Fundamentals
    • Definitions
    • Maxwell equations
    • EMI and apertures
    • EMI environment and characteristics
  • Practical Shielding Theory
    • Common / Differential modes
    • BLS Crosstalk / Radiated fields
    • Reciprocity
    • Emitter location effects
    • Partial shields
    • H, E, and PW fields
    • Shielding material testing
    • Absorption and reflection
  • Shield Apertures
    • Skin depth
    • EM Leakage
    • Aperture calculation
    • Multiple apertures
    • RF current flow
  • Aperture Attenuation Modeling Program
    • Aperture Calculations
    • PCB test data comparisons
    • Attenuation Modeling and Test Factor
  • Honeycomb Vent Panels
    • Design - waveguide effect
    • Attenuation of various panels
    • Galvanic compatibility
  • EMC Shielding Products and Materials
    • Board Level Shields (BLS)
    • Gaskets (BeCu fingerstock, conductive fabric, conductive elastomer, wire mesh)
    • Ferrites Materials
    • RF Absorber
    • Shielding principles
  • EMC Shielding Specifications and Applications
    • MIL-STD 461 / 464 test specifications
    • Shielding applications
  • Question/Answer Session
    • Learning assessment
    • Group discussion on specific EMC design concerns and applications

Instructor(s): Michael J. Oliver
michael_oliver" Michael J. Oliver is Vice President of Electrical / EMC Engineering at MAJR Products Corporation, where he is responsible for customer EMC design and consulting and new product development. He is also the company's ISO-9001:2000 management representative. An expert in EMI/RFI shielding technology, he has experience in electronics, military shelter electrical systems, and high power antenna/radome design. His experience also includes the design and testing of aerospace antennas, shielding of military shelter electrical systems, and discrete EMC shielding components. Mr. Oliver has expertise in open and anechoic chamber radiated testing to military standards and has utilized various antennas and radiated test systems. In addition, he has written numerous technical papers and publications on electromagnetic shielding components, product testing and design, and military antenna/radome test methodology standards. Mr. Oliver is the founder and currently serves as Chairman of the IEEE Pittsburgh EMC Chapter. He is Co-Chairman of the SAE AE4 Electromagnetic Compatibility Committee, and a member of the IEEE EMC Standards Advisory Coordination Committee (SACCom). Mr. Oliver has three patents (one pending) on EMC shielding-thermal management devices and he received a B.S. in Electrical Engineering Technology from Gannon University.

Fees: $810.00 ; SAE Members: $648.00 - $729.00

.7 CEUs
You must complete all course contact hours and successfully pass the learning assessment to obtain CEUs.

For additional information, contact SAE Customer Service at 1-877-606-7323 (724/776-4970 outside the U.S. and Canada) or at CustomerService@sae.org.

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