Passing EMC Without Redesigning the Product

Overview

Recovering a late-stage compliance failure without restarting development or redesigning the core electronics.

Technologies

EMC | Compliance engineering | High-speed electronics | System integration

Define the Problem

A product failed radiated emissions testing late in development, placing project schedules and launch timelines at risk. A complete redesign would have introduced significant cost and delay.

Diagnose the Root Cause

Detailed investigation identified grounding loops and high-speed signal paths coupling into cables and enclosure structures, creating unintended radiating elements.

Key engineering challenges included:

• Late-stage design constraints

• Limited opportunity for PCB redesign

• Multiple potential emission paths

• Tight delivery timescales

Deliver the Solution

We implemented targeted improvements including shielding, filtering and grounding optimisation to address the highest-impact radiation mechanisms without redesigning the core architecture.

Key Outcomes

• Achieved EMC compliance without full redesign

• Avoided project delay and cost

• Preserved existing product architecture

• Improved overall EMC robustness