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Interference Technology

For EMI / EMC Engineers

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Shielding

Board Level EMI Shield Targets Wireless Communication Applications

 

A multi-cavity board level shield from W.L. Gore is dubbed Gore™ snapSHOT™ and provides EMI shielding for wireless communication devices. The technology utilized consists of a lightweight, metalized plastic shield that can be thermoformed for virtually any design and an innovative attachment mechanism using solder spheres as individual mechanical snap features. The shield is … [Read more...]

Two-Piece BLS Choices Expands Design Options

 

The Snap-Shield and the Vault-Shield from Orbel Precision Solutions are the two newest additions to the E-Z Shield™ BLS (board level shielding) line. The versatile shields are suitable for either surface mount or through-hole applications. Utilizing standard universal tooling allows PCB designers to build custom configured shields with little to no tooling costs. The designer … [Read more...]

Simple Lab Techniques of Comparing EMI/RFI Absorber Materials

 

Surface current numbers can be used to pinpoint a material with the best absorption characteristics in a given frequency range. David R. Pacholok, Creative Electronics Consultants, Sleepy Hollow, IL, USA. With engineers facing ever increasing radiated EMI regulatory compliance concerns, various types of EMI absorber materials have come on the market. These are usually … [Read more...]

Shielding Firm Expands to Europe

 

The MuShield Company of Londonderry, New Hampshire has announced the recent opening of a European division. Mushield’s European headquarters is located in the Netherlands, and a regional sales office is in France. Mr. Xavier Génaux will be the leading sales, marketing, and project manager during the introduction of the MuShield brand of magnetic shielding products and … [Read more...]

A Short History and Review of Shielded Cables

 

Effective Shielding prevents interference from entering or emanating from a cable. Don Dodge, Calmont Wire and cable, Inc., Santa Ana, California, USA HISTORY In the late 1800s, as the use of electricity was first being used for communications, interference reared its ugly head. The imperative for some form of mitigation became apparent. The first attempts involved wire … [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...]

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