The Federal Communications Commission affirmed its rules for Broadband over Power Lines with minor modifications. The new rules provide a balance between providing for Access BPL technology that has potential applications for broadband and Smart Grid while protecting incumbent radio services against harmful interference. The rules have been modified “to increase the required … [Read more...]
Transient Voltage Suppressors (TVS) for Automotive Electronic Protection
Soo Man (Sweetman) Kim, Vishay Intertechnology, Inc., Malvern, Pennsylvania, USA A major challenge in automotive design is protecting electronics – such as control units, sensors, and entertainment systems – against damaging surges, voltage transients, ESD, and noise that are present on the power line. Transient voltage suppressors (TVS) are ideal solutions for automotive … [Read more...]
Designing Electronic Systems for EMC: Grounding for the Control of EMI
There are two primary reasons for grounding devices, cables, equipment, and systems. The first reason is to prevent shock and fire hazards in the event that an equipment frame or housing develops a high voltage due to lightning or an accidental breakdown of wiring or components. The second reason is to reduce EMI effects resulting from electromagnetic fields, common impedance, … [Read more...]
EMC and the Smart Grid
In April 2011 this author published an article dealing with the threats and potential impacts to the future U.S. Smart Grid from high power electromagnetic (HPEM) threats including High-altitude Electromagnetic Pulse (HEMP) from a nuclear detonation in space over the U.S., Intentional Electromagnetic Interference (IEMI) from terrorists or criminals who may attack and create … [Read more...]
A Comparison between Gelatinous and Tacky Coated Type Packaging Carriers
Robert J. Vermillion, RMV Technology Group, LLC, NASA-Ames Research Center, Moffett Field, California USA; Doug Smith, DC Smith Consultants, Los Gatos, California, USA For years, semiconductor and aerospace engineers have fielded questions regarding the suitability of using gelatinous and tacky coated packaging materials for the distribution, storage, and sale of ESD sensitive … [Read more...]
A Time-Domain EMI Measurement System Up to 26.5 GHz with Multichannel APD Measuring Function
I. INTRODUCTION The advances in radio systems in the past and their ongoing progress has been joined by advances in measurement systems and, hence, they require further development of measurement and specification standards. Electric and electronic systems have to be designed and realized such that the escape of unwanted electromagnetic energy into the environment is … [Read more...]
Tapes Protect Components from Harsh Environments
Polyonics has introduced a family of temperature and chemical resistant tapes that remain dimensionally stable in extreme manufacturing environments including ultra-high temperatures up to 500°C. The tapes are specifically engineered using Polyonics ThermoGard™ technology to isolate sensitive, precise and expensive components and products from extreme temperatures and harsh … [Read more...]
Two New Electromagnetic Titles
SciTech Publishing is introducing two new titles. “Electromagnetic Measurements in the Near Field, 2nd Ed” by Pawel Bienkowski & Hubert Trzaska outlines the fundamental principles and the procedures to ensure your tests and results contain the most accurate measurements possible. “Integral Equation Methods for Electromagnetics” by John Volakis & Kubilay Sertel is a … [Read more...]
Test Instrument Vendor Joins TD Industry Alliance
Aeroflex Limited has been granted non-council membership status to the TD Industry Alliance. TDIA is a trade group promoting mobile communications enterprises based on TD-SCDMA and TD-LTE, international telecommunications standards proposed by China. Aeroflex is one of the first global test and measurement instrument vendors to become a member of TDIA. Aeroflex’s TD test … [Read more...]
Institute Opens Range for Antenna and Radar Cross Section Measurements
The Georgia Tech Research Institute (GTRI) has opened a new compact range that will be used for radar cross section measurements and antenna testing. The new facility, which is shielded against electromagnetic interference, will be used for GTRI’s defense-related research projects and collaborations with outside organizations.The facility has a test zone that is approximately … [Read more...]
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