The requirements for SAR levels have remained largely unchanged for many years (requirements depend on the country/region). In fact, the FCC mobile/handset specific regulations are derived from levels determined in the 1960s during early research of radiation hazards.Meanwhile, mobile phone designs advanced at light speed while the systems and methods made to test the SAR of … [Read more...]
What is an EMC Design Review?
What is an EMC Design Review?Most hardware engineers are used to doing functional design reviews on their circuit boards and systems before pressing the 'go' button for manufacturing. In the engineering teams I've worked with, that type of design review has usually taken the form of standing around a board room table with a red pen and the largest print outs of the schematics … [Read more...]
The Diagnosis of Under-Performing Semi-Anechoic Chamber Designs
As mentioned in the upcoming article ‘Applying Stealth Technology to EMC Chamber Designs’, and also mentioned during the recent EMC-LIVE webinar ‘Elephants in the TestRoom,’ the intention is to use 3D EM simulation software to explore possible design improvements to today’s under- performing chambers. The article itself is not out yet, but we can make useful progress in the … [Read more...]
Elephants in the Test Room Roundtable Commentary 1
On Thursday, Oct. 16, Interference Technology hosted a roundtable during EMC Live - 'Elephants in the Test Room' based on our blog series. Below is additional commentary about testing issues, from our expert panel.PanelTom Mullineaux - Moderator, Consultant and Author Patrick Andre - President, André Consulting, Inc.Fin O'Connor - Defense and Space Consultant and Contractor, … [Read more...]
Continuation of the Annual IEEE EMC Show in Dresden, Plus Updates on Other Topics
Welcome back. Before we get started - two updates:-3D EM Software Analysis of the Automotive Emissions Test FixtureThe tutorials in the handbooks are completed (there are quite a few because there is an entire suite of analysis tools). Also done are the ones that are downloaded with the software. With all tutorials, a lot of time is devoted to constructing the models to be … [Read more...]
The Annual IEEE EMC Show in Dresden, Plus Elephant #4 ‘The Zip Code Lottery in Achieving Product Compliance’
Hurrah!! The 3D EM software has arrived and I have started to familiarize myself with it. I am going to enjoy this. Reading through the features, it is extremely powerful and looks perfectly suited to simulating the automotive test fixture. It always seems to take me about 40 hours at the keyboard to get up to speed with a new software package, so it will be a while. Meantime … [Read more...]
The Annual IEEE EMC Show in Dresden (continued) Plus Elephant #4 ‘The Zip Code Lottery in Achieving Product Compliance’
Great news, borrowing 3D EM software to diagnose the performance of the automotive radiated emissions test fixture is a go! I have been given a contact at the 3D EM software house and things should pick up quickly after the contact returns from the EMC Europe show in Sweden. I am excited. Meantime ....The Annual IEEE EMC Show - Why Dresden?Leaving aside the European location … [Read more...]
Ta DAH!
At long last, Department of Defense Instruction 3222.01, the DoD Electromagnetic Environmental Effects Program, has been signed and released. For those of you following along, its been a long road! See the post from Dec 2013.So, we have a new DoD E3 Instruction…what does that mean? First of all, as the title indicates, it's an Instruction, not a Directive – the difference is … [Read more...]
The Annual IEEE EMC Show – Why Dresden? Plus Proof of the Arbitrary Selection of Automotive Amplifier Harmonic Limits
Read other posts in the "Elephant in the Test Room" series here.It is looking good for using 3D software to diagnose the performance of the radiated emissions test fixture. Should get the go ahead any day now. Meantime, let’s explore this year’s hot topic. The Annual IEEE EMC Show - Why Dresden?It is no surprise that some USA residents in the EMC industry are wondering why the … [Read more...]
Determination of Practical Harmonic Levels
Well we are still waiting to see if borrowing 3D EM software is on the cards. I should know soon, one way or the other. I hope it happens, but for now let’s keep holding off on Elephant #3, ‘Fixing the Broken Automotive Test Fixture,’ In the meantime, we can continue the engineering approach on determining a practical level of harmonics in RF immunity for Elephant #2, … [Read more...]
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