The U.S. Office of Naval Research recently released a broad agency announcement for the Protection of Electronics Systems program to develop long-lasting undetectable layered technologies to detect attempts to tamper with U.S. and allied military technology, yet provide no indication of when it detects a tamper attempt. The program has four primary thrusts: memory erasure, … [Read more...]
Commercial Development of Nano-based Products Moves Ahead
Nanocomposites research and the massive benefits it promises have attracted considerable press coverage over the past decade. Actual commercial development of nano-based products for composites, however, has been slow. But a new partnership between Applied NanoStructured Solutions LLC, a Lockheed Martin subsidiary, and Owens Corning is about to accelerate growth. ANS has worked … [Read more...]
Long-Reach Cable Assemblies Designed for EMI Control
TE Connectivity’s long-reach cable assemblies designed to the DisplayPort standard meet the V1.1a reduced bit rate (RBR) specification, offering 1.62 Gbps per lane (for up to four lanes) with embedded clocking for better signal integrity and electromagnetic interference control. The long-reach cable assembly can be used in projectors, large commercial LCD monitors, and bulletin … [Read more...]
Compact 2-Stage EMI Line Filter Offers Three Design Configurations
Schurter’s new compact, high grade EMI-filter series FMBB NEO filter family consists of three different 2-stage filter designs (Design C, Design D and Design F), which are characterized by a high symmetrical and asymmetrical attenuation. The FMBB NEO filter Design C attenuates potentially strong conducted interferences. Design D is laid out for the attenuation of high frequency … [Read more...]
New Communication Standards for Smart Grid Metering Devices
Among the efficiencies promised by the smart grid is the use of metering devices that not only report usage to utilities but also inform users how to schedule consumption to lower-cost off-peak hours or even control that consumption automatically. Two new IEEE standards provide multisource "plug and play" environments for the millions of metering devices in the field now and in … [Read more...]
Updated EMC and Hearing Aids Standard Released
IEC 60118-13:2011 in principle covers all relevant EMC phenomena for hearing aids. Hearing aid immunity to high frequency electromagnetic fields originating from digital wireless devices operating in the frequency ranges 0.8 GHz to 0.96 GHz and 1.4 GHz to 2.48 GHz is currently identified as the only relevant EMC phenomenon regarding hearing aids. Future editions of this part of … [Read more...]
New Damped Oscillatory Wave Immunity Test Standard
IEC 61000-4-18 ed1.1 Consolidated with am1, Electromagnetic compatibility (EMC) - Part 4-18: Testing and measurement techniques – Damped oscillatory wave immunity test, relates to the immunity requirements and test methods for electrical and electronic equipment, under operational conditions, with regard to: a) repetitive damped oscillatory waves occurring mainly in power, … [Read more...]
Measurements above 1 GHz in Time-Domain: Theory and Application
Christian Hoffmann, Technische Universität München, Lehrstuhl für Hochfrequenztechnik, Munich, Germany; Stephan Braun, GAUSS Instruments GmbH, Munich, Germany Arnd Frech, GAUSS Instruments GmbH, Munich, Germany; Peter Russer, Technische Universität München, Lehrstuhl für Nanoelektronik, Munich, Germany Time-domain electromagnetic interference (EMI) measurement systems are … [Read more...]
On the Radiation Patterns of Common EMC Antennas
Vincente Rodriguez, ETS-Lindgren LP., Cedar Park, Texas, USA Antennas have been used in EMC measurements since the early days. Knowledge of the antenna pattern was not a requirement of the standards. While MIL STD 461 and some SAE standards called for information on the half power beamwidth, most standards did not require any knowledge of the antenna radiation characteristics. … [Read more...]
Electromagnetic Interference Sources and Their Most Significant Effects
As the density of the electromagnetic environment continues to increase, the concern about its effects from sources producing EMI also increases. Advances in technology and the number of products produced are having a significant effect on the efforts aimed at maintaining the required operation and interoperability of products and systems used in our society. These events had … [Read more...]
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