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Which of the following is a common technique to reduce EMI in PCB design?

easy🧠 Conceptual Q11 of 15
PCB Design - Advanced Routing Techniques
Which of the following is a common technique to reduce EMI in PCB design?
AUsing thinner copper traces
BIncreasing trace length
CRemoving all capacitors
DAdding a ground plane layer
Step-by-Step Solution
Solution:
  1. Step 1: Understand EMI basics

    EMI (Electromagnetic Interference) is reduced by controlling noise sources and paths.
  2. Step 2: Identify effective PCB techniques

    Adding a ground plane layer helps shield and reduce EMI by providing a low impedance return path.
  3. Final Answer:

    Adding a ground plane layer -> Option D
  4. Quick Check:

    Ground plane reduces EMI [OK]
Quick Trick: Ground planes help block EMI effectively [OK]
Common Mistakes:
MISTAKES
  • Thinking longer traces reduce EMI
  • Removing capacitors increases noise
  • Thinner copper increases resistance, not EMI reduction

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