Recent Articles

A Bias Tee for Broadband Measurement of Power Electronic Components

Bias tees are an important tool for many applications including vector network analysis. As accurate understanding and modeling of power electronic components becomes increasingly important for the study of their electromagnetic emissions, so do broadband measurements with bias tees. This paper describes the composition of such a special bias tee in terms of the necessary geometries and circuitry.

The Rise of Time-Sensitive Networking (TSN) in Automobiles, Industrial Automation, and Aviation

Speed and determinism in design, made possible by time-sensitive networking (TSN) technology, is prompting the development of new TSN profiles for a multitude of applications across industry sectors. The IEEE 802.1™ Working Group of the IEEE Standards Association (IEEE SA) offers numerous TSN profiles for applications, including the automotive, manufacturing, and aviation industries.

Preparing For and Implementing Product Recalls in 2022

Recalls are a major contributor to product liability incidents and lawsuits, interactions with government safety agencies, disputes with suppliers and product sellers, and negative publicity with the buying public. New guides have recently been issued that can help a manufacturer and product seller to better understand how to prepare for and implement an effective recall.

Design

Common Mode Filter Design Guide

The selection of component values for common mode filters need not be a difficult and confusing process. The use of standard filter alignments can be utilized to achieve a relatively simple and straightforward design process, though such alignments may readily be modified to utilize pre-defined component values.

SCIF and Radio Frequency Secured Facility Design, Part 2

Secure facility designs often comingle ICS/ICD-705 and NSA 94-106 performance requirements creating project confusion with significant design and cost implications. This article focuses on bringing some clarity to the differences between ICS/ICD-705 design guidance and NSA 94-106 performance requirements. The related secure facility design and construction process is also reviewed.

Low-Frequency Magnetic Fields in Electric Vehicles

Low-frequency magnetic fields, a type of electromagnetic disturbance commonly found in electric vehicles, can pose potential health hazards to humans and affect the operation of critical EV components. Here are some design techniques to help mitigate the problem.

Incorporating Ethical Considerations into the Design Process

Values-based engineering is essential to ensuring that innovative products are based on ethical design considerations. The IEEE’s new standard, IEEE 7000-2021, provides a roadmap to help navigate this process and to help build trust in product designs.

Fundamentals

NASA Space Shuttle’s Return to Flight: The Untold Electromagnetic Backstory

The 2003 Columbia re-entry accident was caused by a piece of liberated external tank foam that struck and damaged the left leading edge during powered ascent. Computational and experimental electromagnetics were ultimately applied to foster the development of a new NASA Ascent Debris Radar (NDR) for the remaining 22 Shuttle missions. In the process, countless static and dynamic radar signature and EMI/EMC calculations and tests were completed to assure this safety-critical radar system was ready for the return to flight (RTF) missions.

Continuing Your Professional Education in 2022

Traditionally, the start of a new year is a time when we reflect on the progress we’ve made during the year passed and set our goals for the new year. We’ve queried training resources in our industry to provide you with an overview of free or affordable solutions to meet your training goals in 2022.

Capacitors: Theory and Application

This article presents the fundamentals and application of capacitors. What is a capacitor, and how do we select them? Techniques of selecting capacitors and things to consider when using capacitors are highlighted. Both practical examples and simulation are used to demonstrate the key points.

Ohm’s Law Also Applies to ESD‑Induced Heat Pulses

Heat flow analysis for semiconductor ESD situations can be approximated to one dimension, and then captured with a generalized Ohm’s Law using a complex impedance. Methods can include time-dependent electrothermal pulses and feedback due to self-heating, with solutions readily carried out on any desktop computer.

Standards and Compliance

High-Integrity Components in Electrical Equipment, Part II

While the selection of components in electrical equipment plays a crucial role, a sound understanding of the characteristics of safety-critical and high-integrity components can provide valuable information about the ways to advance and achieve safety goals.
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