Thursday, April 10, 2014

Developing new EMC simulation methods with SEISME

(Left) A TEM cell for measuring emissions from a PCB. (Right) A model of a PCB in a TEM cell in CST STUDIO SUITE, using measured data as a source.
When designing electronic systems, engineers can spend much of their time hunting and resolving potential electromagnetic compatibility (EMC) problems. With the help of the SEISME project, of which we are a member, these EMC issues should have fewer places to hide.

SEISME is a research consortium made up of industrial and academic partners based mainly in Aerospace Valley in south west France, and includes companies working in the fields of semiconductors, automotive, aviation, space and defense. As well as being French for “earthquake”, SEISME also stands for “Simulation de l’Emission et de l’Immunité des Systèmes et des Modules Electroniques” (“Simulation of Emissions and Immunity of Electronic Systems and Modules”).

The goal of SEISME is to develop new techniques to allow the EMC properties of products to be analyzed using simulation, allowing modeling to complement traditional measurements and opening new possibilities for electronic design. New components come onto the market all the time, and often engineers would like to replace an obsolete component with its newer equivalent. However, even if the components have the same function, they may not have the same EMC behavior.

At present, engineers have to analyze the EMC properties of rebuilt systems in the lab. SEISME aims to complement the testing process by devising a standardized approach for EMC simulation. The International Electrotechnical Commission (IEC) has published a specification for simulating conducted emissions on integrated circuits – SEISME will create similar specifications for both conducted and radiated emissions and immunity, not just for integrated circuits but also for PCBs and devices.

Participation in SEISME allows us to see firsthand how customers use CST STUDIO SUITE® in their workflow, and use this information to improve our EMC capabilities. We can also bring our experience of electromagnetic simulation to bear to help the engineers and researchers from SEISME’s partners to produce the specifications for EMC simulation.

The three year project started in 2011, and runs until 2014. We are excited to be part of this collaborative project to benefit engineers and shape the future standards of EMC simulation.

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