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Suggested Items

Beyond Design: How Signals Survive the Hostile PCB Environment

06/03/2026 | Barry Olney -- Column: Beyond Design
Modern digital signals exhibit behavior more characteristic of RF waveforms than the slow logic transitions of the past. With fast rise times, a PCB is no longer a collection of copper traces, but a distributed electromagnetic system. Successful design isn’t about routing signals anymore; it’s about engineering transmission lines, preserving uninterrupted return‑current paths, and controlling the resonant structures that naturally form within the multilayer PCB.

The Pulse: Caught in the Crosshatch—A Cautionary Tale of Detective Work

04/29/2026 | Martyn Gaudion -- Column: The Pulse
A chance meeting at a family wedding the other week led to a conversation about numbers, an introduction to a book entitled Humble Pi, and how numeric misinterpretation can lead to all kinds of unexpected outcomes, some just costly, others tragic. It’s a good and amusing read, and as a result of this conversation with someone I had previously never met, I feel somewhat (at least temporarily) enlightened. One of the takeaways of the book is that humans are born to think logarithmically, and linear math has to be formally educated into our brains. That got me curious for more.

Beyond Design: Demystifying Common‑Mode Radiation

02/24/2026 | Barry Olney -- Column: Beyond Design
Common-mode radiation is a major contributor to unwanted electromagnetic interference (EMI). It arises when equal-phase currents flow on conductors without an opposing return current to cancel their fields. The resulting imbalance causes those conductors, especially attached cables, to behave as unintended antennas. Grasping how common-mode radiation is generated, the problems it creates, and the methods available to control it is essential for designing reliable electronic systems that meet regulatory requirements.

Beyond Design: Micro-ohm Power Delivery Network for AI-driven GPUs

11/18/2025 | Barry Olney -- Column: Beyond Design
The evolution of modern processors, marked by faster edge transitions, reduced output impedance, and increasingly complex bus architectures, has significantly augmented the demands on PCB infrastructure. These challenges are compounded by AI-driven graphics processing units (GPUs), which require exceptionally high-power delivery at ultra-low operating voltages, placing greater stress on power integrity and layout design.

The Shaughnessy Report: Zee Plane! Zee Plane!

11/11/2025 | Andy Shaughnessy -- Column: The Shaughnessy Report
Planes aren’t magic, but they are big time-savers. Without planes, designers would have to create thousands of traces to accomplish the same objectives. You can imagine the first time a designer thought about using a sheet of copper, asking, “Hey, why am I killing myself laying out all these traces? Can’t I just use this sheet of copper instead?”
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