Thin and flexible materials can provide simple and innovative solutions for hardware engineers Jung-Ju Suh, Ph.D. Electrical Markets Division, 3M Korea; Seoul, South Korea INTRODUCTION Electromagnetic interference issues can arise anywhere in electronic equipment with unpredictable and troublesome effects. These issues challenge hardware design engineers, and the … [Read more...]
Shielding
- Free Application Study: Controlling the EMI Effects of Avionic Equipment in Aircraft
- Free White Paper: Ensuring Component Reliability: EMI Protection and the Automotive Industry
- Free White Paper: Meeting Medical EMI Standards: Choosing the Right Shielding Approach
- Free Application Study: Controlling EMI in the Microwave/RF Industry
- Free Application Study: EMI Compliance: Choosing the Right Shielding and Gasketing
Antenna Fundamentals
A proper understanding of antennas requires familiarity with electromagnetics, circuit theory, electronics and signal processing. Candace Suriano, Ph.D., Suriano Solutions John Suriano, Ph.D., Nidec Motors, Auburn Hills, MI, USA Tom Holmes, Agilent Technologies, Tipp City, OH, USA Qin Yu, Alcatel-Lucent, Columbus, OH, USA How does an antenna pick up a signal and convert it to … [Read more...]
Magnetic Shielding Basics
Growing complexity in electronics heightens the need for magnetic shielding. Richard Vance Ad-Vance Magnetics, Inc., Rochester, IN, USA Without magnetic shielding, much of today’s sophisticated electronic gear would be larger, less efficient, and in some magnetic environments, completely non-functional. Today’s complex components are extremely sensitive, and miniaturization … [Read more...]
Board-Level Multi-Cavity Shielding
Photo-chemical machining offers significant advantages over traditional methods of manufacture. Alan Warner TECAN Components Ltd., Weymouth, UK The ever-increasing demands on RF and microwave circuitry design and development teams to achieve EMC, eliminate crosstalk, save PCB real estate, decrease overall product size, provide access for rework and, last but not least, reduce … [Read more...]
Thermal and EMI Shielding Boost Design Reliability
Optimal shielding helps meet the challenges of cramming maximum functionality into minimal PCB space. Paul J. Stus Laird Technologies St. Louis, MO Advances in the miniaturization of electronic components has intensified the need for manufacturers to solve multiple problems simultaneously and earlier in the design process. Solving the issues quickly and early in the design … [Read more...]
Cost Considerations for Selecting RF Shielding Materials
Taking these factors into account can save time and money. Gary Fenical, Laird Technologies Delaware Water Gap, PA RF shielding materials are an important consideration when designing electronic components because these materials help ensure that the electronic device will perform to its optimum functionality. Considering RF shielding materials at the beginning of the … [Read more...]
How to Cut Costs and Improve Lead-times in Circuit Board Shields: Standard EMI Solutions for Custom Designs
Dario Negrini Leader Tech Inc. Tampa, FL Let's face it. If you didn’t have to worry about EMI shielding issues with your circuit board, life would be much simpler. Unfortunately, as product designs continue to shrink in size and as the list of features continues to grow, EMI compliance issues cannot be overlooked. Circuit board shields are one of the best ways to … [Read more...]
Concerning Exposure of Workers and the General Public to Electromagnetic Fields
Keith G. Richens Cranage EMC & Safety Oakley, Shropshire, UK Introduction Electromagnetic fields (EMF) are universally present in the everyday environment, including workplaces and public areas. Measurements are made to identify and characterise them to ensure that people are not exposed to fields that could potentially cause injury or adversely affect … [Read more...]
Using A Transmission Line Model To Analyze Shield Current Distribution Resulting From Bulk Current Injection (BCI)
Arthur J. Glazar, Life Senior Member IEEE Background Radio frequency (RF) signal energy is normally confined to the interior of a coaxial cable. RF currents on the surface of a cable shield are undesirable and generally indicate a problem. Shield surface currents can occur as the result of conducted susceptibility (CS) or radiated susceptibility (RS). Whatever their … [Read more...]
Stability of Nickel-Graphite Conductive Filler in Silicone Elastomer for EMI Shielding Applications
How does aging affect the shielding effectiveness of a gasket? Brian W. Callen, Ph.D. and Claudia E. Johnston Sulzer Metco (Canada) Inc., Fort Saskatchewan, Alberta, Canada Nickel graphite conductive fillers have been replacing conventional silver-based fillers in EMI shielding gasket materials. Filled elastomer shielding gaskets include extrusions, molded shapes, die cut … [Read more...]