Sponsor

Interference Technology

For EMI / EMC Engineers

Sponsor

Making Fleas Flee

 

Energetic Solutions, Ltd. has announced a new product Shoo!Tag™ that is touted as the ultimate green product—safe for pets, people, and the planet Earth. The small tag that attaches to an animal’s collar or bridle claims to use specific electromagnetic frequencies to create a protective barrier around the animal that will keep targeted pests away for up to four months. Dog and … [Read more...]

Certification Programs: What’s Behind the Terminology?

 

A well-defined and structured certification program is vital to assuring product quality and safety Randy Ivans, Underwriters Laboratories Inc. Melville, NY The Merriam-Webster® Dictionary defines “certify” as “to attest authoritatively, to confirm, to present in a formal communication, or to attest as being true.” Consider the implications of these words and phrases—confirm, … [Read more...]

Achieving More Accurate Measurement of Conducted RF Emissions Using Modified AMNs

 

Measurement uncertainty for common-mode disturbances can be reduced from about 22 dB to a maximum of a few dB Mart Coenen, Philips Applied Technologies Eindhoven, the Netherlands Introduction In early 1980, extensive discussions were held within the IEC CISPR/A working group regarding the definition of the impedance characteristics and the RF emission limits attained via the … [Read more...]

Building a State-of-the-Art 5-Meter Chamber

 

An efficient shield room for automotive testing progresses from design to finished structure Michael Koffink, Bob Mitchell Intertek ETL Semko Littleton, MA Four years ago, we noticed a growing demand for EMC testing from the automotive industry. As cars and trucks now feature myriad on-board electronic devices, they are increasingly susceptible to stray emissions while … [Read more...]

Reverberation Chamber for EMC Testing

 

The reverberation chamber provides the most realistic simulation/equivalency for electronics functioning within a cavity Er-Ping Li, Ph.D.; Xing-Chang Wei, Ph.D., Electromagnetic Labs, Singapore National Institute of High Performance Computing Singapore Introduction The problem is familiar, but growing. The widespread and ever-growing use of electronic devices with high-speed … [Read more...]

Understanding Inductance in the Real-world

 

As soon as current flows through metal conductors, inductance exists Bruce Archambeault, Ph.D., IBM Distinguished Engineer, IBM, Research Triangle Park, NC The concept of inductance is one of the most misunderstood concepts in electrical engineering. Terms such as ‘self inductance’, ‘loop inductance’, ‘partial inductance’, ‘mutual inductance’ are used with little concern … [Read more...]

In Memoriam: Mark W. Ambler

 

The ITEM Publications Team is saddened to announce the loss of one of their own. A long-time employee of ITEM Publications, our accountant Mark Ambler died suddenly at age 57 on January 28, 2009. A native Pennsylvanian, Mark plied his accounting skills for the Commonwealth of Pennsylvania before retiring in 2007. Still, after retirement he stayed on as a part-time, but … [Read more...]

Measurement of Intermittent Emissions with a Time-Domain EMI Measurement System

 

With  time-domain EMI measurement, a single scan can test intermittent radiating devices quickly and accurately. Stephan Braun and Peter Russer, Institute for High Frequency Engineering Munich University of Technology Munich, Germany For some time, measurements of electromagnetic interference have been carried out by super-heterodyne receivers operating in the frequency … [Read more...]

Industry Sponsors

Sponsor
Sponsor