Researchers from Southeast University in China have created a new artificial surface that can bend and focus electromagnetic waves similar to an antenna. The achievement, which the team is calling “the first broadband transformation optics metasurface lens,” could lead to the creation of new types of antennas that are flat, ultra low-profile or that conform to the shape of … [Read more...]
Low-EMI Oscillators with 1.9V Supply Voltage
Saelig Company, Inc. has introduced the new 18HM series oscillators to the Euroquartz range of spread spectrum low-EMI oscillators. The low-cost oscillators offer the significant advantage of reducing EMI at the source— the system clock oscillator—removing the need to employ costly shielded backplanes, ferrite cores and similar techniques to reduce EMI. Featuring a supply … [Read more...]
A National Plan for EMP Protection (Part 2) – Protection of Buildings
Don White Consultant, Don White Consultants Jerry Emanuelson Consultant Part 1 of this article addressed a proposed national plan for U.S. EMP protection. Part 2 of the article presents methods and techniques for EMP protection of buildings, solar rooftops and other structures. As such, Part 2 covers details of shielding, bonding, grounding, and cable or device surge … [Read more...]
Mitigating Excessive Emissions, 2nd Edition
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...]
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