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In a multi-layer PCB with dedicated power and ground planes, what is the typical impact on signal crosstalk?

medium📝 Formula Result Q5 of 15
PCB Design - Multi-Layer PCB Design
In a multi-layer PCB with dedicated power and ground planes, what is the typical impact on signal crosstalk?
ASignal crosstalk is significantly reduced due to better shielding
BSignal crosstalk increases because of closer layer proximity
CSignal crosstalk remains unchanged regardless of planes
DSignal crosstalk is eliminated completely
Step-by-Step Solution
Solution:

  1. Step 1: Understand crosstalk

    Crosstalk occurs due to electromagnetic coupling between signals.

  2. Step 2: Role of power and ground planes

    Dedicated planes provide shielding and reduce coupling.

  3. Final Answer:

    Signal crosstalk is significantly reduced due to better shielding -> Option A

  4. Quick Check:

    Dedicated planes reduce crosstalk [OK]
Quick Trick: Power and ground planes reduce crosstalk [OK]
Common Mistakes:
MISTAKES
  • Assuming crosstalk increases with more layers
  • Believing crosstalk is unaffected by planes
  • Thinking crosstalk can be completely eliminated

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