It focuses on real design fixes, not just theoretical math.
: A detailed breakdown of the book's contents, including shielding, grounding, and PCB layout, is available via Author's Official Portal
| Chapter | Topics Covered | | :--- | :--- | | | A crucial chapter on distributing power to digital circuits, selecting the right decoupling capacitors, and minimizing noise. | | 12. Digital Circuit Radiation | An examination of the radiation mechanisms in digital circuits, covering both common-mode and differential-mode radiation. | | 13. Conducted Emissions | How to manage conducted emissions on AC and DC power lines, with a specific focus on switching power supplies and motor drives. | | 14. RF and Transient Immunity | How to design equipment to withstand external radio frequency interference and transient voltage surges. | | 15. Electrostatic Discharge (ESD) | A detailed guide on protecting products from ESD, focusing on a three-pronged approach: mechanical, electrical, and software design. | | 16. PCB Layout and Stackup | Practical guidance on printed circuit board (PCB) layout and stack-up—a subject that is foundational to modern EMC. | | 17. Mixed-Signal PCB Layout | A guide to the difficult problems of partitioning, grounding, and layout for boards that mix analog and digital circuits. | | 18. Precompliance EMC Measurements | How to perform basic EMC measurements in the product development lab using simple, inexpensive test equipment. |
EMC engineering involves a multidisciplinary approach, combining knowledge from electrical engineering, physics, and computer science to ensure that devices and systems meet EMC requirements. The consequences of neglecting EMC can be severe, ranging from equipment malfunction and data corruption to safety risks and regulatory non-compliance. It focuses on real design fixes, not just theoretical math
His earlier book, Noise Reduction Techniques in Electronic Systems (first published in 1976 and revised in 1988), was the industry standard for a generation. In 2009, Ott published Electromagnetic Compatibility Engineering . This massive update expanded on his original concepts to address modern high-speed digital designs, advanced grounding methodologies, and updated regulatory compliance standards.
Unlike purely academic texts, Ott’s work focuses on —how to predict, prevent, and solve electromagnetic interference (EMI) problems before reaching compliance testing.
His previous work, Noise Reduction Techniques in Electronic Systems , was already a classic. However, the 2009 release of Electromagnetic Compatibility Engineering was more than a second edition—it was a complete overhaul. Ott updated the text for the 21st century, addressing: Digital Circuit Radiation | An examination of the
The PDF version of Electromagnetic Compatibility Engineering is widely used as a searchable digital reference. Note that the book is ; legitimate access may require purchase from Wiley or an institutional subscription. However, many engineers keep a personal digital copy for quick lookup of Ott’s famous tables and design checklists.
: Ensuring high-speed return currents have a low-impedance path directly beneath the signal trace to minimize loop area.
The book focuses on practical, cost-effective design techniques rather than heavy mathematical theory. Electromagnetic Compatibility Engineering: Ott, Henry W. | | 14
The primary strength of Ott’s work lies in its ability to bridge the gap between theoretical academia and the harsh realities of the engineering workbench. Many engineering texts focus heavily on Maxwell's equations and abstract field theory, leaving graduates unprepared for the "black magic" reputation often ascribed to EMC. Ott, however, approaches the subject from a practical perspective. He demystifies the phenomenon of noise and interference by focusing on the fundamental physical mechanisms. Rather than presenting EMC as a checklist of regulatory hurdles to be cleared at the end of a design cycle, Ott posits that EMC must be designed into the product from the very beginning. This shift in philosophy—from testing to designing—is the central thesis of the book.
Ott uses simple analogies and practical examples to explain complex topics like transmission line effects, differential-mode vs. common-mode noise, and shielding effectiveness, making them accessible to engineers at all levels. Core Principles Covered in the Book Grounding and Bonding