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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.

Can Electrostatic Discharge Design Problems Be Solved with Electronic Design Automation Tools Alone? Part 1

Going back several decades, Electrostatic Discharge (ESD) design and layout checks that were done manually were laborious and time-consuming, let alone not confidently reliable.

Locating the Noise Source of the 10-30 MHz “Hump”

During conducted emission tests, one of the challenges manufacturers face is the resonance peaks in the harmonic noise somewhere between 10 MHz and 30 MHz. Often, no amount of filtering will eradicate or attenuate the peak.

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.

The Dilemma Between Customers and Suppliers on EOS Failures

During the last four decades, damage to devices from electrical overstress (EOS) has confounded both IC suppliers and customers. The Industry Council on ESD Target Levels investigated numerous EOS root causes and established a white paper on the subject, JEP174 [1].
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ANSI Z535.1 – Safety Colors in Focus

In our "On Your Mark" columns, we often discuss the importance of American National...

Banana Skins – July 2023 (#429-432)

One car manufacturer found that the craze for CB radio caused more than a jamming of the airwaves.

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.

The Transistor: An Indispensable ESD Protection Device – Part 2

In this article we discuss the MOS transistor in the role of ESD protection for high-voltage applications and take a look into a possible future of ESD protection devices for high-performance computing applications.

Banana Skins – June 2023 (#424-428)

Spacecraft now and of the future are being controlled by EMC requirements of the past.
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