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Interference Technology

For EMI / EMC Engineers

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Shielding

IEC 60243-2:2013: Electric Strength of Insulating Materials – Test Methods – Part 2: Additional Requirements for Tests Using Direct Voltage

 

From the International Electrotechnical Commission webstore: "IEC 60243-2:2013 gives requirements additional to those in IEC 60243-1 for the determination of the electric strength of solid insulating materials under direct voltage stress. This third edition cancels and replaces the second edition published in 2001, and constitutes an editorial revision." … [Read more...]

Verizon 700MHz LTE Service Distorts Time Warner Cable Signals

 

In North Carolina, customers of Time Warner Cable Company have linked the appearance of blurry, pixelated images on their televisions to nearby use of Verizon LTE smartphones. According to local station WRAL-TV in Raleigh, NC, Time Warner Cable recently moved some TV channels, including WRAL-TV, to the same broadband spectrum that serves Verizon’s 4G LTE data service. Verizon … [Read more...]

Electrically Conductive Coatings Provide EMI Shielding

 

EMI shielding specialist Central Coating Co. Inc. has released two new materials for EMI shielding applications. The first material is an electrically-conductive, one-component, nickel-filled acrylic coating ideal for application on plastics to provide modest EMI shielding and anti-static protection for electronic enclosures and assemblies where abrasion resistance and coating … [Read more...]

Ultra-Low-Height Board-Level EMI Shield for Compact Electronics

 

EMI solutions provider Laird Technologies has released a new ultra-low-height two-piece board-level EMI shield for compact electronics with small space requirements. The new board-level shield incorporates a frame with a patent-pending drawn latch design that allows for simplified tooling and tighter tolerances. The design accommodates assembly heights as low as 1 mm. “This … [Read more...]

New Tool Detects and Traces Electromagnetic Attacks

 

With the ability to interfere with or damage electronic devices, electromagnetic pulses (EMP) are considered one of the most dangerous threats facing modern electronic systems and infrastructure. Man-made EMPs in particular can be used to deliberately disable power grids and defense and security systems without leaving any indication as to the specific nature or origin of the … [Read more...]

Assemblies Provide EMI/RFI Protection for High-Powered Switching and Rugged Applications

 

Interconnect solutions provider Molex Inc. has released its new Woodhead MAX-LOC Plus Shielded Cord-Grip assemblies featuring a nickel-plated aluminum housing and shielding ring for EMI/RFI protection. According to the company, the assemblies enable original equipment manufacturers (OEMs) and end-users to connect high-power electrical currents directly to an application with … [Read more...]

Edge Guide Clip-On Strip Reduces Design Costs in PCB Grounding & Shielding Applications

 

EMC solutions provider Laird Technologies has announced the release of its new Fingerstock product, the Edge Guide Clip-On Strip. Available in custom lengths, the new product is designed to help reduce installation and labor costs in applications where PCBs need to be grounded and/or shielded. For example, says the company, a 10 cm or eight finger strip could reduce … [Read more...]

Electromagnetic Cloaking System Cancels Out Radio Waves

 

A new approach to invisibility cloaking from researchers at the University of Toronto, Canada has yielded an adaptable system capable of shielding objects of various sizes from radar detection. Developed by professor George Eleftheriades and Ph.D. student Michael Selvanayagam of The Edward S. Rogers Sr. Department of Electrical & Computer Engineering, the cloaking system … [Read more...]

Analysis on Shielding Effectiveness of Board Level Shielding with Apertures

 

Brian She Laird Technologies ABSTRACT There is a growing need to evaluate the shielding effectiveness (SE) of board level shielding (BLS). By means of a reverberation chamber, we performed a series of shielding effectiveness test for board level shielding products with different apertures. In addition, an analytical SE formulation has been developed in comparison with … [Read more...]

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