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Spectrum Supportability Risk Assessments

 

Author Brian Farmer   The Problem Early consideration of spectrum supportability in spectrum dependent (S-D) system acquisitions is a fundamental criterion that must be satisfied before the DoD develops and fields communications-electronics (CE) equipment and related weapons systems.  Development or acquisition of systems that meet operational requirements, but fail to … [Read more...]

2013 EMC Directory & Design Guide

 

Every year, Interference Technology publishes the EMC Buyers’ Guide — our most up-to-date look at the providers of hundreds of EMC-related products and services. In this issue is a feature story about women in EMC, articles on testing and design, and a listings of products and services, company directories, calendar events and more! To read this issue, click here. … [Read more...]

Personnel Certification – What’s in it for Me?

 

I have recently heard, as part of some of my activity with the IEEE EMC Society (which really should be a lot more than it is (my activity, not the EMCs!), but that’s another story), questions about what iNARTE should do for us, as certified EMC Engineers. The gist of the question is: what is the overall benefit to the EMC Society and its members from iNARTE and having one … [Read more...]

Spread Spectrum Clock Generation – Theory and Debate

 

Kenneth Wyatt Wyatt Technical Services LLC   History of Spread Spectrum   Figure 1 – Actress, mathematician and inventor, Hedy Lamarr. Courtesy of http://www.hedylamarr.com During WW2, the U.S. Navy was having problems with radio-controlled torpedoes that were being jammed by high-strength RF signals tuned to the same frequency as the transmitting radio. In … [Read more...]

EMC – Grounding on Automation and Control Systems Applications to Eliminate Electromagnetic Interference in Industrial Plants

 

Author Roberto Menna Barreto QEMC - Engenharia, Qualidade e Compatibilidade Eletromagnética Ltda., Rio de Janeiro, Brazil menna@qemc.com.br   Summary The preservation of signals and equipment are generally characterized by the term Electromagnetic Compatibility (EMC), whose essence will translate in its own grounding system. The proper EMC improvement in the … [Read more...]

Special Feature: Women in EMC

 

By Belinda Stasiukiewicz Editor, Interference Technology Aspire. Advance. Achieve. This is the slogan of the Society of Women Engineers. The organization, founded more than 60 years ago, is one of the leaders in the push to increase female interest in engineering. The society hopes that its members, and all female engineers in general, will aspire to become successful … [Read more...]

The Equipotential Plane That Isn’t

 

The success of the multipoint ground (MPG) system requires having an extremely-very-low RF impedance grounding connection to an extremely-very-low RF impedance equipotential reference plane.  It also helps if the conducting materials are homogeneous and the bad things are kept separate from the good ones. Does that sound easy? You’re right – it’s not! A couple of posts … [Read more...]

Spectrum Soapbox

 

“Soapbox:  Also, soap box; an improvised platform, as one on a street, from which a speaker delivers an informal speech, an appeal, or political harangue” (dictionary.com).Well, it may feel like a harangue, but the fact is that the U.S. Department of Defense remains on its soapbox about the potential impacts of continuing changes in the arena of spectrum use.  … [Read more...]

Talking Smack….

 

So, I attend regular US DoD E3 meetings—aptly titled the DoD E3 Integrated Program Team (IPT) and chaired by the Defense Spectrum Office—held monthly and attended by representatives of the four services, the DoD CIO’s office, the Joint Staff and others.  A majority of the discussion these days centers on spectrum activity, rather than purely E3 discussion (those days are … [Read more...]

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