EMC Decoupling, Bypassing and Embedded Capacitance for Enhanced PCB Performance

With advances in semiconductor manufacturing, larger pin count devices, greater power consumption and higher clock speeds, power distribution to digital systems on printed circuit boards is becoming a primary concern for design engineers. Signal integrity must be ensured while maintaining electromagnetic compatibility for an intended operating environment, such as high-speed telecommunication, personal computers or industrial control products.

Power plane resonances and lack of energy charge to digital components, now operating at higher frequencies with large amounts of inrush surge current, cause problems that are magnitudes greater than designs from several years ago. Understanding how to incorporate capacitive structures in power distribution networks is becoming a mandatory aspect of digital engineering along with the PCB design and layout process. Areas of concern deal with application of ...
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