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Bogdan Adamczyk

Dr. Bogdan Adamczyk is professor and director of the EMC Center at Grand Valley State University (http://www.gvsu.edu/emccenter) where he performs EMC educational research and regularly teaches EM/EMC courses and EMC certificate courses for industry. He is an iNARTE-certified EMC Master Design Engineer. He is the author of two textbooks, “Foundations of Electromagnetic Compatibility with Practical Applications” (Wiley, 2017) and “Principles of Electromagnetic Compatibility: Laboratory Exercises and Lectures” (Wiley, 2024). He has been writing “EMC Concepts Explained” since January 2017.

From This Author

Impact of Decoupling Capacitors and Trace Length on Radiated Emissions in a CMOS Inverter Circuit

This article evaluates the impact of decoupling capacitors and trace length on radiated emissions.

Difference Amplifier: Common Mode and Differential Mode Voltages

This column describes the operation of an ideal difference amplifier. It is shown that an ideal difference amplifier (with no resistance mismatches) eliminates the common mode portion of the input voltage and amplifies only the differential mode portion of the input voltage.

Impact of a Decoupling Capacitor and Trace Length on Signal Integrity in a CMOS Inverter Circuit

This article describes a laboratory experiment that shows the impact of the decoupling capacitors and a PCB trace length on the signal integrity in a CMOS inverter circuit.

Correlation Between Insertion Loss and Input Impedance of EMC Filters, Part 3: Cascaded LC and CL Filters

This is the third article of a three-article series devoted to the correlation between the insertion loss and input impedance of passive EMC filters.

Correlation Between Insertion Loss and Input Impedance of EMC Filters, Part 2: π and T Filters

This is the second of a three-article series devoted to the correlation between the insertion loss and input impedance of passive EMC filters. This article focuses on π and T filters.
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Correlation Between Insertion Loss and Input Impedance of EMC Filters, Part 1: LC and CL Filters

This is the first article of a three-article series devoted to the correlation between the insertion loss and input impedance of passive EMC filters.

Return-Current Distribution in a PCB Microstrip Line Configuration, Part 2

This is the second article of a two-article series devoted to the return current distribution in a PCB microstrip line configuration.

Return-Current Distribution in a PCB Microstrip Line Configuration, Part 1

This is the first article of a two-article series devoted to the return current distribution in a 2-layer FR-4 PCB microstrip line configuration with a solid reference plane.

Far-Field Criterion for Wire‑Type Antennas

This article presents the derivation of the far-field criterion for two fundamental wire-type antennas: electric (or Hertzian) dipole and magnetic dipole.

Smith Chart and Input Impedance to Transmission Line, Part 3: Input Impedance to the Line

This article explains how to use a Smith Chart to determine the input impedance to transmission line at a given distance from the source or the load.
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