Become a successful HERO tester in four easy steps. Gaétan Duplain and Charles Leduc, Opsens, Inc., Quebec, Canada Hazards from Electromagnetic Radiation to Ordnance (HERO), the potential for electromagnetic radiation to pose an adverse effect on munitions, is a familiar problem first identified in the 1950s. Avoiding the unintended detonation or malfunction of electrically … [Read more...]
RF Shielding Materials: An Update on Selection and Cost Consideration
RF gasket selection must be a well-informed decision in the design process. Gary Fenical, Laird Technologies, St. Louis, MD, USA Advances in electronic components continue to occur at a rapid pace, and this ongoing rush means more and more wireless devices, increasing power levels, and higher frequencies. While consumers demand more advanced products with increased features … [Read more...]
Protection of Commercial Installations from the 'Triple Threat' of HEMP, IEMI and Severe Geomagentic Storms
With properly designed protection, commercial installations and buildings can be protected against each of these environments. William A. Radasky, Ph.D, P.E., Metatech Corporation, Goleta, California, USA Over the past five years, many publications have indicated that three unusual high-power electromagnetic threats pose significant danger to industry. These are: the … [Read more...]
Mitigation of EMP Effects Using Shielded Rooms and Enclosures
Performance and reliability of a shielding system is essential in times of emergency. Wayne D. Martin, ETS-Lindgren, Glendale Heights, Illinois, USA The most cursory assessment of news and events around the globe during this first decade of the Twenty-First Century leads to the inescapable conclusion that we live in perilous times. Around the globe, political, ethnic and … [Read more...]
The New EMC Requirements of Electric Cars
Refinements are needed for better correlation between chip-level or module-level measurements and whole vehicle testing. Michael Koffink and Roland Gubisch, Intertek Testing Services, Boxborough, Massachusetts, USA The automotive EMC environment is in a constant state of flux as new onboard electric devices, communications media (both wired and wireless), and new drive … [Read more...]
RF Emission Reduction Techniques for ARM-Based Microcontroller Applications
A system's immunity can be enhanced without causing any functional drawbacks. Mart Coenen, EMCMCC bv, Eindhoven, the Netherlands INTRODUCTION With today’s digital designs and the time frame available for design-in, electrical system engineers and PCB designers are more or less forced to follow the application concepts provided by embedded device manufacturers. The … [Read more...]
Shielding of an EMG Machine Utilizing a Conductive Tent
Testers seek to remedy the longstanding problem of “noisy’ responses from an EMG instrument. Terence P. O’Laughlin and Michael J. Oliver, MAJR Products, Saegertown, Pennsylvania, USA INTRODUCTION This paper presents a shielding methodology and test in which an electromyography (EMG) instrument is shielded from spurious electromagnetic and radio frequency interference … [Read more...]
The Global EMC University: 2009 IEEE International Symposium on Electromagnetic Compatibility
The Global EMC University was first offered at the 2007 IEEE EMC Symposium in Honolulu, Hawaii as a means of helping engineers who were new to EMC to get up to speed on a variety of topics that are an important part of EMC engineering. The overwhelming response to this program caused the Symposium Committee to add it to the Technical Program for the 2008 Symposium in Detroit … [Read more...]
Record Fines for Interference
British telecom regulator Ofcom has issued a report indicating that 2008 was a record year for enforcement actions and fines levied. Illegal broadcasting, or so-called pirate radio, continued to be a problem in heavily populated urban areas. During 2008 Ofcom carried out 36 studio raids, secured 28 prosecutions and 14 formal cautions, removed 489 illegal transmitters, and … [Read more...]
IEEE & NATO Sign TCA; Will Work on Human EM Exposure
The IEEE Standards Association (IEEE-SA) and the NATO Standardisation Agency (NSA) have signed a Technical Cooperation Agreement allowing these organizations to share knowledge of each other’s standards development activities and to avoid duplication of technical standards wherever possible. Under the terms of the TCA, IEEE-SA and the NSA will exchange information about ongoing … [Read more...]
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