It’s the holiday season again, when we celebrate the serious things in life and have some fun too.When EMC engineers come bearing gifts...tis NOT the season to be jolly. Fa-la-la, le-la-la-laa. In fact, it’s time to be worried. For to the EMC engineer, GIFTS is an acronym for: Grounding, Isolation, Filtering, Transient suppression, and Shielding. Sometimes it takes … [Read more...]
Investigation of Vehicle Radiated Emissions Measurement Practices
Alastair R. Ruddle, Ph.D. Computational Electromagnetic Specialist, MIRA Limited Radiated electromagnetic emissions measurement standards for road vehicles were developed at a time when the main threat posed by radio-frequency noise from vehicles was interference to broadcast transmissions from spark ignition systems. Since that time, however, on-going technological … [Read more...]
Potential Impacts of Electromagnetic Weapons on the Critical Infrastructures (View from 2012)
William A. Radasky IEEE Life Fellow WHAT IS IEMI? In recent years, Hollywood has indicated that criminals and terrorists could use electromagnetic (EM) weapons to black out a portion of Las Vegas (Ocean’s 11) or take down a counter-terrorism computer center (24). Is this fact or fiction? It turns out that Hollywood in this case is leading the public and police agencies in … [Read more...]
Antenna Coupling Inside an Aircraft Using ACA Direct Method
Pascal De Resseguier, Entares Engineering, Toulouse, France Yannick Poiré and Samuel Leman, Nexio, Toulouse, France ABSTRACT A proper study of electromagnetic interferences inside an aircraft has become essential with the recent increase of electronic devices on board. Their effects on the airplane communication and electronic systems need to be considered at an early stage … [Read more...]
Measurement Analysis of Pulsed Disturbance Immunity
Lars Glaser Summary Physical problems when analyzing an electronic system's interference immunity. Introduction Today it is becoming increasingly difficult to locate faults in state-of-the-art electronic circuits. Apart from a greater complexity (and consequently a much higher number of potential fault sources), small mechanical dimensions make it more and more difficult … [Read more...]
How to Protect Sensitive Corporate Data from Unauthorized Access
Herbert Mangstl, Sales Director, EMshield GmbH Jordi Ferri, Shielding Division Manager, AST Modular S.L. Protection of sensitive corporate data from unauthorized access is key for many organizations. Proper shielding will protect data from illegal eavesdropping. The works council of Breuninger is intercepted during a meeting. The car maker Renault has been rocked by an … [Read more...]
RF Emissions of Compact Fluorescent Lights
NOTE: The below article has been translated from Spanish and can be found in its original language in the 2012 EMC Europe Guide. W.G. Fano, Faculty of Engineering, Universidad de Buenos Aires, Buenos Aires, Argentina ABSTRACT Fluorescent lamps, in particular compact fluorescent lamps, are replacing incandescent lamp worldwide. This new technology offers the benefit of lower … [Read more...]
Surge Protective Devices (SPDs) and Short Circuit Currents
Bryan Cole President of Technology Research Council Jim Tiesi Marketing Manager for Emerson Network Power Surge Protection Electrical systems and equipment that power and control industrial, commercial, telecommunication and medical processes are subjected to numerous power quality events. These includes power disruptions, brown-outs, sags, swells, temporary overvoltages and … [Read more...]
Enhancements on Resonant-Free PDN Design
Mart Coenen EMCMCC mart.coenen@emcmcc.nl Arthur van Roermund Eindhoven University of Technology a.h.m.v.roermund@tue.nl Abstract— In 2011, a new concept for resonant-free PDN design has been presented at EMCCompo2011 [1]. This concept is based on terminated transmission lines. From implementations on multi-layer boards some additional constraints have shown up for which … [Read more...]
CM Feeling Bad, Check its Pulse
The last post examined CM radiation. Wow, what a problem! Over 100,000 microvolts/meter from a 3.5 ma signal. If the DM is normally the intended signal, where does the big common mode signal come from? Let’s take a look at that. The whole world seems to be enamored with high speeds. I know I could hardly wait to get a 1 GHz notebook. Did it help me … [Read more...]
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