Nickel acrylic paints in the ECP 500 Series are now available from TBA Electro Conductive Products (ECP). Surface coatings offer the simplest and most cost effective solution for EMI problems in a wide range of applications. They can be applied with minimal training and equipment requirements using conventional paint spray techniques. ECP 502/552 nickel acrylic coatings deliver … [Read more...]
Sheet Solutions Are Designed With High Permeability and High Temperature Resistance
The WX Series from ARC Technologies provides superior EMI absorption by combining proprietary, high-performance magnetic materials into a flexible, resilient elastomer. Precisely blending refined fillers in exacting ratios with polymer substrate materials creates a thin, flexible EMI-absorbing sheet that will attenuate from 100 MHz to 3 GHz. Surface resistance is >3 MΩ. WS … [Read more...]
Conductive Tabs Provide Low Impedance
Conductive grounding from Chomerics provide EMI protection by establishing low impedance ground paths between electrically conductive elements in a chassis or component. These stabs forestall interference from the surface currents that “excite” metal components and thus create “phantom” fields. The tabs can be used to provide the required grounding paths economically as … [Read more...]
Swiss Foundation Clarifies Position on Controversial Study on EM Radiation and Health
The Zurich-based Foundation for Research on Information Technologies in Society (IT’IS), an organization that works to expand the scientific basis of the safe and beneficial application of electromagnetic energy in health and information technologies, has issued a statement clarifying the extent of its participation in a controversial study by University of Vienna Prof. Hugo … [Read more...]
Intertek Achieves Acceptance of Certification Marks from the United Arab Emirates
Intertek, well known for its EMI/RFI and other test offerings, has announced that its safety and certification marks have been formally accepted in the United Arab Emirates by the Dubai Civil Defense and Abu Dubai Civil Defense Departments. Intertek’s ETL and WHI marks acceptance provide manufacturers direct global market access to one of the fastest growing construction … [Read more...]
Crucial RF Shielding Selection Considerations
Gary Fenical Laird Technologies INTRODUCTION Designers must attenuate RF signals for various reasons. Since a product cannot be legally marketed unless it meets EMC requirements, designers must curtail RF signals above a certain limit. It is important to consider RF shielding materials at the beginning of a design project because choosing the correct kind of shielding upfront … [Read more...]
EMI Shielding and Optical Enhancement to Touch Screens
Electromagnetic attenuation features can be incorporated as an integral part of touch screens rather than as a separate component in those display applications requiring shielding for EMI/EMC compliance. Various enhancement techniques and design considerations will be reviewed. Features and methods employed will vary with particular touch screen enhancements and will include … [Read more...]
PCB Board Level Enclosures: A Vital Design Element
PCB design is vital to the efficacy of innumerable electronic products. A reliable product and marketplace success are the ultimate rewards for careful consideration of all design issues. Choosing an appropriate board level enclosure is just one element of successful design efforts, and the choice must be carefully considered along with other crucial issues including the … [Read more...]
Understanding Shielding Effectiveness of Materials and Measurements in the Near-Field and Far-Field
When we treat the shielding effectiveness measurement with a uniform field, the results are similar for both near and far fields. Kermit O. Phipps and Philip F. Keebler EPRI EMC Laboratory, Knoxville, TN, USA INTRODUCTION Traditionally Schelkunoff’s shielding effectiveness equation is used universally in teaching and practice throughout the EMC community as a whole. In this … [Read more...]
UK Telecom Regulator Ofcom Announces Outcome of Radio Spectrum Auction
British telecom regulator Ofcom has announced the outcome of its fifth auction of radio spectrum. The auction was for spectrum in the 1452- to 1492-MHz band, known as the L-band. This part of the spectrum is well suited for offering services such as mobile television, wireless broadband, and satellite radio. One notable winning bidder was Qualcomm UK Spectrum Ltd, which paid … [Read more...]
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