Interference Technology

For EMI / EMC Engineers

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Review of MIL-STD-461 RS101– Radiated Susceptibility, Magnetic Field and RS103 Radiated Susceptibility, Electric Field

 

Introduction This article discusses RS101 and RS103, including the updates contained in MIL-STD-461 revision “G”, the current revision.  These tests quantify the ability of a device to tolerate undesired signals present as a field at the device and associated cables.  The field has the potential of coupling the interference into the device circuitry and cause performance … [Read more...]

Signal Hound Introduces SCPI Compatibility for Automation of their RF Spectrum Analyzers

 

SCPI compatibility has been added to Signal Hound’s Spike™ software, bringing additional remote interface and control capabilities to Signal Hound Spectrum analyzers. LA CENTER, WA – June 6, 2018 - Signal Hound, a developer of RF test and measurement equipment, has announced the addition of SCPI compatibility for its spectrum analyzers via its Spike software. Spike provides … [Read more...]

Design for Compliance Essentials

 

INTRODUCTION While unrealistic to discuss all aspects of product design in a single article, I’ll try to describe the most common design issues I find in the hundreds of client products I’ve had a chance to work on. These issues generally include PC board design, cables, shielding, and filtering. More detailed information may be found in the Reference section below. As … [Read more...]

XEL50xx Low-loss Power Inductors

 

Fully optimized for high-frequency applications Our new XEL50xx Family of high-performance, molded power inductors offer exceptionally low DC resistance and ultra-low AC losses, greatly improving power converter efficiency at high switching frequencies (2 to 5+ MHz) and high ripple current.  The XEL5020 Series is available in six inductance values from 0.10 to 1.0 µH, with … [Read more...]

Signal Hound introduces VITA 49 functionality in the SM200A Spectrum Analyzer API

 

The new VRT functions in the SM200A API extend the power of the SM200A to the acquisition of VITA 49 Signal Data and Context packets for interpretation and further processing. LA CENTER, WA - May 16, 2018 - Signal Hound, a developer of highly optimized solutions for RF signal test and measurement, has announced the addition of VITA 49 functionality to its SM200A 20 GHz … [Read more...]

18V/m 80-1000MHz 250W Amplifier

 

This innovative amplifier produces around 300W P1dB at the important VHF frequencies, and is housed in a compact 4U case. VBA1000-250S is intended for applications where an 18V/m field is required and incorporates measures to improve power delivery into high VSWR loads. The amplifier can be controlled from either the front panel or remote control via the Ethernet, USB and … [Read more...]

18V/m 80-1000MHz 250W Amplifier

 

This innovative amplifier produces around 300W P1dB at the important VHF frequencies, and is housed in a compact 4U case. VBA1000-250S is intended for applications where an 18V/m field is required and incorporates measures to improve power delivery into high VSWR loads. The amplifier can be controlled from either the front panel or remote control via the Ethernet, USB and … [Read more...]

Gowanda Expands Magnetics Offerings with Acquisition of HiSonic

 

May 22, 2018, Gowanda, NY (USA) – Gowanda Components Group is pleased to announce that its offerings of RF and microwave passive magnetic components are expanding in connection with the acquisition of HiSonic in Olathe, Kansas. “HiSonic’s designs, technologies and customers complement those within our Magnetics Division” said GCG CEO Don McElheny. “The synergy in our … [Read more...]

Basic EMI Concepts

 

Understanding EMC is all about two important concepts: (1) all currents flow in loops and (2) high frequency signals are propagated as electromagnetic waves in transmission lines and the field energy travels through the dielectric. The two concepts are related because they are intertwined together. Digital signals create the propagating field, which induces the convection … [Read more...]

Oh How I Hate to Commutate!

 

My favorite Sophomore in Engineering, Roger, and his group, made a small crane for their engineering project. It had many EMC issues.  One issue they had was noise from permanent magnet DC motors.  I am so glad Roger cares about this issue, because I have modeled a few permanent magnet DC motors, and I can explain how to design it so that then so they are … [Read more...]

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