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Shielding

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34.1 Shielding

We frequently use shields and filters to patch up a poorly-designed system. This practice may be justified for equipment, where we are only building one or a few units, and most of our design work consists of integrating boards and subassemblies that we:

  • Purchased off-the-shelf from suppliers.

  • Designed for previous projects.

But when we are designing a product, where parts and assembly costs will be a major chunk of the per-unit price, we have many strategies and techniques that can eliminate the need to shield the entire unit:

  • Partitioning the design into subsystems (Chapter 26), including separating noise sources from noise-sensitive sections, and positioning/ orienting them so that they won't interfere with one another.

  • Designing grounds and returns (Chapter 27).

  • Designing the power distribution system (Chapter 28).

  • Designing printed circuit boards (Chapter 31).

  • Designing and routing cables (Chapter 32).

  • Designing digital circuits (Chapter 21).

  • Designing analog...

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  1. John R. Barnes
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Barnes, J.R. (2004). Shielding. In: Barnes, J.R. (eds) Robust Electronic Design Reference Book. Springer, New York, NY. https://doi.org/10.1007/1-4020-7830-7_34

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  • DOI: https://doi.org/10.1007/1-4020-7830-7_34

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