Practical Engineering

Noise Suppression Techniques Using Capacitors

Explore the essential role of capacitors in electromagnetic interference (EMI) suppression. From ceramic to electrolytic options, discover how proper selection and placement of these components can significantly improve circuit performance and reliability in electronic design.

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Global Compliance News

NASA Hears “Birds Chirping” in Space

Satellites deployed by the U.S. National Aeronautics and Space Administration (NASA) have detected electromagnetic waves in space that sound eerily like the chirping of a flock of birds.

U.S. Federal Communications Commission (FCC)

FCC Proposes Spectrum Rules to Support Advanced Flight Technologies

The U.S. Federal Communications Commission (FCC) is moving forward with efforts to support the development and deployment of advanced air mobility systems intended to foster an increase in accessible and convenient transportation options for people and cargo.

U.S. Federal Communications Commission (FCC)

FCC Warns of Spoofed Mortgage Provider Calls from “Green Mirage”

The Enforcement Bureau of the U.S. Federal Communications Commission (FCC) is notifying domestic and international law enforcement partners, industry stakeholders, and consumers of significant security threats related to an illegal spoofing operation.

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Calculators

Antenna Factor and Gain Calculations

Antenna Factor and Gain metrics provide crucial insights into antenna performance, allowing engineers to calculate signal strength relationships and directional effectiveness. These measurements help optimize RF systems by comparing actual antenna behavior to theoretical isotropic radiators using standardized 50-ohm configurations.

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U.S. Federal Communications Commission (FCC)

FCC Issues its PIRATE Radio Annual Report

The U.S. Federal Communications Commission (FCC) has released its annual report to the U.S. Congress on its recent enforcement efforts under the provisions of the “Preventing Illegal Radio Abuse Through Enforcement” (PIRATE) Act.

U.S. Food and Drug Administration (FDA)

FDA Issues Draft Guidance on AI-Based Medical Devices

The FDA releases landmark draft guidance for AI-enabled medical devices, offering manufacturers a roadmap for development, approval, and lifecycle management while addressing critical concerns of transparency and demographic bias.

U.S. Federal Communications Commission (FCC)

FCC Upholds Forfeiture Order Against Amateur Licensee

FCC upholds record $34,000 fine against Idaho amateur radio operator who interfered with Forest Service communications during critical wildfire suppression efforts, rejecting his plea of good intentions.

General Interest

Was it the Radar? Respectfully Revisiting the 1967 US Navy USS Forrestal Carrier Disaster: Part 1

In 1967, one of the U.S. Navy's worst peacetime disasters occurred aboard the USS Forrestal aircraft carrier off Vietnam's coast. A weapon misfire triggered a devastating chain of explosions and fires, resulting in hundreds of casualties and nearly destroying the ship.

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Feature Articles

Military Standards

Tailoring MIL-STD-461 RE102

This article describes the parameters that can be used to tailor your application of MIL-STD-461 RE102, such as frequency ranges, designing notches, and relaxing limits.

ESD Standards

A Circuit Model for the Charged Device Model Spark

The charged device model spark itself is not just resistive; it often has extra inductance or L-C energy storage. These plus hardware properties affect the CDM waveform and affect methods to correlate alternate CDM test methods to standard JEDEC CDM.

Design

Tackling Low-Voltage Signaling in Inverter Design: Part 2

Discover practical strategies for managing noise in high-power inverter designs. From component selection and PCB stack-up to routing techniques, learn how to protect sensitive low-voltage signals while maintaining system performance. Essential reading for engineers working with mixed-signal power electronics designs.

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