Note: This article has been translated from Polish to English. It can be found in its original language in the 2014 Europe EMC Guide. Jan Sroka, Professor, Warsaw University of Technology, Warsaw, Poland ABSTRACT The term "site attenuation" is used in the theory of electromagnetic fields as extension of the term "attenuation," which is well known in circuit theory. The site … [Read more...]
Power Grid, Mains Filtering and Power Line Communications… A Root Cause for Incompatibilities?
This article has been translated from Dutch to English. It can be found in its original language in the 2014 Europe EMC Guide. Mart Coenen, Owner, EMCMCC, the Netherlands The power grid is intentionally meant to distribute electrical energy at the mains frequency, as produced by the electricity generating plants, towards the end-users. The three-phase low-voltage distribution … [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...]
The First Practical Approach to EMC for Functional Safety (EMC Risk Management)
Keith Armstrong Cherry Clough Consultants Ltd. There are now many standards on Functional Safety (Risk Management) that apply to relevant electronics, including IEC 61508 [1] and the standards developed from it listed in Section II of [2], and ISO 14971 [3]. They all require that EMI be dealt with, but complying with emissions and immunity EMC test standards, even using … [Read more...]
Using the Reverberation Chamber to Measure Total Radiated Power for EMF Assessments
NOTE: This article has been translated from Dutch to English. It can be found in its original language in the 2014 Europe EMC Guide. Konika Banerjee, Marcel van Doorn and Pierre Beeckman, Philips Innovation Services, Quality & Reliability Engineering - EMC Center, High Tech Campus 26, 5656 AE Eindhoven, The Netherlands ABSTRACT Multimedia products need to comply with … [Read more...]
Practical EMC Filter Design and Optimization
NOTE: This article has been translated from German into English. It can be found in its original language in the 2014 EMC Europe Guide. Tobias Hofer EMC Consultant HSI Elektonik AG Switching power supplies can be found in nearly all electronic devices. The efficiency should be as high as possible. The no load condition should be in the milliwatt range. In contrast to that, … [Read more...]
Correction Factors of Near-Field Probes and How They Are Used in EMC
NOTE: This article has been translated from German to English. It can be found in its original language in the 2014 Europe EMC Guide. Dipl. Ing. Carsten Stange, LANGER EMV-Technik GmbH INTRODUCTION Langer EMV-Technik has been providing services to help eliminate interferences in electronic assemblies for 20 years. We have gained a wealth of experience in measuring … [Read more...]
Using Near-Field Measurement to Reduce Investigation Time and Cost
NOTE: This article has been translated from French into English. It can be found in its original language in the 2014 EMC Europe Guide. Sébastien Serpaud, EMC Design Support, NEXIO, Toulouse, France; sebastien.serpaud@nexio.fr Sebastien Ocquidant, EMC Specialist, EATON, Montbonnot St. Martin, France; sebastienocquidant@Eaton.com Jean-Philippe Tigneres, EMC Specialist, BARCO, … [Read more...]
New Techniques in Shielding for EMI
NOTE: This article has been translated from Spanish to English. It can be found in its original language in the 2014 Europe EMC Guide. Tim Fornes, Ph.D. Senior Staff Scientist, Chemical Research LORD Corporation Electromagnetic interference (EMI) is an unwanted disruption in the communication of an electrical device caused by foreign electromagnetic waves. Such foreign waves … [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...]
