Automotive EMI Shielding White Paper

Laird Technologies published a white paper about the sources of Electromagnetic Interference (EMI) in automotive systems. The technical paper is titled, Automotive EMI Shielding – Controlling Automotive Electronic Emissions and Susceptibility with Proper EMI Suppression Methods. The white paper discusses various electronic systems found on automobiles, and the need of containing and suppressing their EMI potential with each other through EMI shielding and ferrite solutions.

The Automotive EMI Shielding white paper details how it is possible to integrate increasing numbers of electrical and electronic systems into the confined spaces of automobiles through the advancement of technology. The advancement poses the problem of keeping the EMI of these systems from interfering with each other through radiated and conducted emissions.

The paper goes into details discussing the susceptibility of these systems to EMI that is both internal and external to the vehicle. If not properly controlled, the interference can cause each system to malfunction, and even fail.

Automotive EMI Shielding White Paper Conclusion

Proper EMI design considerations are essential from the beginning stages of the device. There are a myriad of EMI sources and receptors in today’s automobiles and in the environment in which they must operate. Today’s automobiles are an impressive and complicated electronic platform. They will only get more sophisticated and complex as time goes on. The control of electromagnetic interference is essential. Not only because there are mandatory requirements, but also for the proper functionality of the entire system. Devices installed into automobiles and devices brought on board by passengers must not interfere with each other. This is especially true for the safe operation of the vehicle. The achievement of complete electromagnetic compatibility is essential.

If the device does not meet its EMC requirements, then shielding is generally the only solution. There are many possible shielding solutions and products. Proper product design and shielding selection is essential for efficient cost-effective operations. If the designer is unfamiliar with shielding techniques and available products, it is advisable to contact a shielding manufacturer that provides services such as trained field application engineers.

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