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Interference Technology

For EMI / EMC Engineers

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Shielding

Data Centers Vulnerable to EMPs, Say Experts

 

Data centers, used to house computer systems and associated components such as telecommunications and data storage systems, store everything from classified government information to personal photos posted on social media websites. Designers must consider a number of key factors when constructing a data center facility, including site selection, mechanical and electrical … [Read more...]

EMI Shielding Compounds for Automotive Radar and Sensing System Components

 

Thermoplastics compounder RTP Company has developed new EMI shielding compounds ideal for replacing metal or conductive coated plastic housings in automotive sensing systems. Automotive radar and sensing systems designed to maintain vehicle safety and reliability require EMI protection to eliminate “noise” that could interfere with signal processing, the company says. As the … [Read more...]

Air-Inflated EMI/RFI Shelters Offer Fast Set-Up and Take-Down

 

Saelig Company, Inc. has introduced new inflatable AirBeam enclosures designed to deploy rapidly and provide an uncomplicated state-of-the-art environment for EMI/RFI compliance testing or chemical biological containment (CBC). Available in a range of sizes from 7x7 ft. to as large as an aircraft hangar, the new AirBeam enclosures are ideal for many types of EMI-RFI compliance … [Read more...]

A National Plan for EMP Protection (Part 2) – Protection of Buildings

 

Don White Consultant, Don White Consultants Jerry Emanuelson Consultant Part 1 of this article addressed a proposed national plan for U.S. EMP protection. Part 2 of the article presents methods and techniques for EMP protection of buildings, solar rooftops and other structures. As such, Part 2 covers details of shielding, bonding, grounding, and cable or device surge … [Read more...]

Mitigating Excessive Emissions, 2nd Edition

 

Donald L. Sweeney and Marilyn Sweeney D.L.S. Electronic Systems, Inc. Mitigating Excessive Emissions was originally written in 1988 and presented at the IEEE EMC Symposium in Atlanta Georgia. The concept and paper have been used by the author hundreds, if not thousands, of times to illustrate what he calls “The Barbell Model.” This illustrates, in very simple terms, how … [Read more...]

Graphene May Boost RF Absorption

 

New research from scientists in the UK examines graphene’s ability to absorb electromagnetic radiation with the creation of optically transparent broadband absorbers operating in the millimeter frequency range. Since graphene's isolation by University of Manchester scientists in 2004, research efforts worldwide have focused on harnessing its unique electrical, optical, … [Read more...]

Flexible Ferrites Offer EMI Shielding and Noise Suppression

 

Fair-Rite Products Corporation has announced the availability of new flexible ferrites. Available in four thicknesses and six material grades, the RoHS-compliant flexible sheets block noise at lower frequencies and absorb it at higher frequencies. The NiZn ferrite is placed between a 0.01 mm layer of PET film and 0.02 mm adhesive tape. Each sheet can be cut to size enabling it … [Read more...]

EMI Absorption Tape & Sheets Feature Dual-Layer Design for Maximum Noise Mitigation

 

Molex Inc. has released new HOZOX electromagnetic interference absorption tape and sheets designed for use by manufacturers of high-frequency equipment in industries such as medical, consumer electronics, data-telecommunications and microwave/RF. According to the company, the new HOZOX absorption technology incorporates a unique magnetic-conductive dual-layer design to … [Read more...]

To EMP or Not to EMP… Is That the Question?

 

So what are our thoughts on the threat of an electromagnetic pulse event (God forbid) causing some sort of catastrophic damage to our telecommunications, power, and whatever other kind of electronic infrastructure that might be out there? I know, I know…it depends who you talk to! Being in the EMC business, I’d like to believe that I understand the fundamental issue (danger) … [Read more...]

IEC TS 62153-4-1:2014(E): Metallic Communication Cable Test Methods – Part 4-1: EMC – Introduction to Electromagnetic Screening Measurements

 

From the International Electrotechnical Commission webstore: "IEC TS 62153-4-1:2014(E) deals with screening measurements. Screening (or shielding) is one basic way of achieving electromagnetic compatibility (EMC). However, a confusingly large number of methods and concepts are available to test for the screening quality of cables and related components, and for defining their … [Read more...]

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