Donald L. Sweeney and Marilyn Sweeney D.L.S. Electronic Systems, Inc. Mitigating Excessive Emissions was originally written in 1988 and presented at the IEEE EMC Symposium in Atlanta Georgia. The concept and paper have been used by the author hundreds, if not thousands, of times to illustrate what he calls “The Barbell Model.” This illustrates, in very simple terms, how … [Read more...]
A Design Review of the Automotive Radiated Emissions Test Fixture
Tom Mullineaux RF Engineer From a cold, dispassionate RF engineering perspective, the automotive radiated test set-up is a strange looking transmit/receive arrangement, with the cable harness of the equipment under test (EUT) suspended above a large copper sheet acting as the transmitter, and a huge antenna close to the chamber floor, and partly in the shadow of the copper … [Read more...]
EU Radio Equipment Directive to Require Universal Phone Charger
European Union politicians voted last week in favor of an update to radio equipment that would establish guidelines for a universal mobile phone charger and enact new standards for radio equipment. According to EU officials, the new Radio Equipment Directive aims to keep up with the growing number of “radio equipment devices” and ensure they do not interfere with each other by … [Read more...]
Base Station RF Tester for RF Design Verification and Production Testing
Aeroflex Ltd. has announced the introduction of a base station (BS) RF tester for all popular cellular and non-cellular wireless standards, including LTE/LTE-A and Wi-Fi. Designed for production test of BS and associated RF components, the tester can be used for both RF design verification and production test on small cells, as well as replacing conventional rack-and-stack … [Read more...]
Near-Field Probes for EMC Analysis of Electronics Modules, Components and IC Pins
Langer EMV-Technik GmbH has released new SX near-field probes with a frequency range up to 10 GHz enable EMC analysis of interference emitted by electronic boards, components and IC pins with high internal frequencies. High clock rates of 2 GHz, says the company, may result in fifth order harmonics of up to 10 GHz. These harmonics are coupled out by RF sources on the board … [Read more...]
EMI Absorption Tape & Sheets Feature Dual-Layer Design for Maximum Noise Mitigation
Molex Inc. has released new HOZOX electromagnetic interference absorption tape and sheets designed for use by manufacturers of high-frequency equipment in industries such as medical, consumer electronics, data-telecommunications and microwave/RF. According to the company, the new HOZOX absorption technology incorporates a unique magnetic-conductive dual-layer design to … [Read more...]
PCB Analyzer for Impedance Testing in Manufacturing
Agilent Technologies has introduced the E5063A PCB Analyzer for printed circuit board impedance testing in manufacturing. Tighter impedance tolerance is a direct result of increasing data rates, the company says, and more accurate impedance test solutions for PCB manufacturing are now required to achieve signal integrity. To meet that demand, the E5063A PCB Analyzer offers … [Read more...]
Graphene Circuit Competes with Silicon Technology
Scientists at IBM have taken their graphene research a step further with the development of what they claim is the world’s most advanced, fully functional integrated circuit made of wafer-scale graphene. According to the researchers, the new graphene-based IC acts as a radio frequency receiver performing signal amplification, filtering and downconversion mixing and is … [Read more...]
EMC Facility Expansion Includes New 5-Meter Semi-Anechoic Test Chamber
Agilent Technologies has announced the opening of a new 5-meter semi-anechoic electromagnetic compatibility test chamber as part of a facility expansion at the company’s Santa Rosa, Calif. site. Equipped with dual antennas and two standards-compliant N9038A MXE EMI receivers, the 1,300-square-foot, 5-meter semi-anechoic chamber supports simultaneous measurements of vertical … [Read more...]
Electromagnetic Simulation Suite for PCB Design Delivers End-to-End SI Analysis
Simulation technology developer ANSYS has released a new electromagnetic simulation suite for the design of high-speed printed circuit boards (PCB) and integrated circuit (IC) packages. Powered by its hybrid, full-wave finite element electromagnetic solver engine, the new SIwave suite—emcompassing SIwave-DC, SIwave-PI and Slwave—delivers a complete signal integrity analysis … [Read more...]
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