Electromagnetic Interference (EMI) and Radio Frequency Interference (RFI) pose threats to electronic signal integrity and strength, leading to disruptions and suboptimal performance in sensitive communication systems and devices. In the context of Advanced Driver Assistance Systems (ADAS), EMI becomes a critical safety concern. To mitigate these issues, robust engineering design is essential.

 

Vehicles with advanced driver assistance systems (ADAS) include a wide range of electronics, many of which have a high risk of propagating EMI. Numerous design best practices exist to address electronic noise, and while engineers might lack significant control over the electrical systems, there are still a few design considerations that can minimize the impact of electromagnetic interference (EMI) on sensors and software.

 

It is critical to consider EMI/RFI shielding solutions that effectively reduce susceptibility to electronic malfunctions by either blocking external electromagnetic waves or preventing the emission of internal electromagnetic waves that could interfere with surrounding circuits or devices in and around ADAS components.

EMC

Benefits of critical EMI shielding design considerations:

  • Signal Integrity: By preventing external interference, these materials help ensure that signals remain clear, stable, and unaffected by external electromagnetic sources
  • Compliance with Regulatory Standards: The use of EMI shielding materials helps electronic devices and systems meet these regulatory standards, so they operate within acceptable EMC limits
  • Reduced Cross-Talk: EMI shielding materials can minimize cross-talk, which is the undesired electromagnetic coupling between adjacent components or circuits
  • Improved Reliability: Shielding sensitive components from external interference enhances the overall reliability and performance of electronic systems
  • Enhanced Safety: In certain environments, electromagnetic interference can disrupt the proper functioning of critical electronic systems, leading to safety hazards
  • Longevity of Electronic Components: EMI shielding materials contribute to the longevity of electronic components by protecting them from the potentially damaging effects of electromagnetic interference
  • Design Flexibility: EMI shielding materials come in various forms, such as conductive elastomers, wire mesh, gaskets, O-rings, fabric over foam, etc. 
How to choose an EMI Gasket
How to choose an EMI Gasket

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EMI shielding white paper
White paper: Electromagnetic Interference Shielding