Interference Technology

For EMI / EMC Engineers

Sponsor

Review of MIL-STD 461 CS118 – Electrostatic Discharge

 

Introduction MIL-STD-461G, released in December 2015, added a test for Personnel Borne Electrostatic Discharge (ESD). Prior to this release, this type of test for electronic systems and sub-systems was managed at the system level under MIL-STD-464C released in 2010. Both of these standards contain similar requirements. MIL-STD-461G provides the details on testing and … [Read more...]

Overview of the DO-160 Standard

 

In aerospace, there is one standard that always seems to be popping up, DO-160. Aircraft suppliers are often complying with aviation authorities’ regulations by testing their product to DO-160. DO-160 is a standard that was published by the industry group Radio Technical Commission for Aeronautics known as RTCA. RTCA is not a government regulation, however the FAA, EASA and … [Read more...]

Automotive EMC

 

Introduction  The rapid development of the automotive industry and the trend towards autonomous vehicles and ADAS systems continue to drive the need for more sophisticated EMC design and test scenarios for the automotive industry. Vehicle platforms become increasingly much more complex with electronic devices that need a reliable function without impacting security or … [Read more...]

UNECE Regulation 10: Electronic Sub-Assembly with Immunity Related Functionality

 

In this special guest-installment for the series of blogs on UNECE Regulation 10, Revision 5, Amendment 1 (8 October 2016), written by Elite Electronic Engineering’s Automotive Test Group Team Leader Stan Dolecki, we will look at electronic sub-assemblies with immunity related functionality. Electronic sub-assemblies (ESA) utilized in the European Union require conformity … [Read more...]

The  Übersystem, Automotive Ethernet: An Interview with Stephen Jackson

 

With larger bandwidth, lower latency, and lighter weight, this is the Übersystem; it’s the OPEN (One-Pair Ether-Net) Alliance Ethernet for automotive, aerospace and more!  On June 12th, 2018 I talked to Stephen Jackson (Steve) of Keysight’s Ixia Solutions Group about why Automotive Ethernet is the best solution for Advanced Driver Assistance Systems, ADAS, power train, body … [Read more...]

Identifying and Locating Radio Frequency Interference (RFI)

 

Introduction With the plethora of wireless devices, increasing broadcast, communications, and other RF sources all competing for radio spectrum, the chances of radio frequency interference (RFI) will only increase. This article explains how to identify, characterize, and locate typical interfering sources.   CATEGORIES OF INTERFERENCE There  are  two  broad  … [Read more...]

Does the Number of Bypass Capacitors for a Chip Matter?

 

How do you decide on the size of a bypass capacitor (or capacitors) for your project?  Do you need multiple capacitors to bypass a specific chip?  Are multiple value capacitors important for a given use?  Do you subscribe to the old Wife’s Tail about having a couple capacitors a couple orders of magnitude different in value in parallel?  Here is one take on the subject for you … [Read more...]

Emissions Test Facility – OATS vs SAC? 

 

You’ve been tasked by management to build a new, from scratch, EMC test facility.  Among other items, you need to decide between an Open Area Test Site (OATS) or an RF Semi-Anechoic Chamber (SAC).  How do you decide?  To someone who has been there, done that, the choice is clear, but what are some factors that might sway the decision one way or the other?  Design of an … [Read more...]

Classical Shielding Theory vs. Near-Field Measurements

 

This article addresses the fundamental concepts underlying the classical shielding theory based on Schelkunoff’s equations [1]. In order to assess the applicability of these equations, an understanding of their origin, assumptions made in their derivations, and their limitations, are needed. This tutorial article addresses each of these points. The goal is not to show the … [Read more...]

Industry Sponsors

Sponsor
Sponsor