The Importance of Addressing EMI During PCB Design and Testing

Why You Can’t Ignore EMI Until the Testing Phase

Some engineers delay electromagnetic interference (EMI) considerations until compliance testing, assuming issues can be resolved with quick fixes.

This approach often leads to costly redesigns and project delays.

EMI is best addressed early in the design phase through:

- Optimized PCB Layout: Minimize the area enclosed by current loops to reduce antenna-like structures that radiate or conduct high-energy harmonic content.

- Strategic Component Selection and Placement: Choose components and arrange them to limit EMI risks.

- Thoughtful System Architecture: Design with EMI compliance in mind from the start.

Implementing these strategies during the design phase is far more cost-effective than relying on expensive shielding or other last-minute solutions during testing.

Early intervention also provides more options for achieving compliance without compromising performance.

The key to success is understanding EMI fundamentals.

By tackling EMI proactively, you can save time, reduce costs, and ensure a smoother path to compliance.

-Dario


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