Editor’s note: This question was asked in response to Interference Technology’s recent webinar by Keith Armstrong. To view the webinar, click here. Question: In the case of a product which has a metal enclosure and shielded cables: 1. Is it recommended to connect the metal enclosure to the 0V reference plane? 2. For shielded cables, where to connect the shield of the cable … [Read more...]
Attorney Alleges EMI Cause of Veterans' Parade Train Crash
Investigators have determined that an issue with the train crossing signal system may have been responsible for the mid-November train crash that killed four veterans and injured 16 others during a West Texas wounded veterans’ parade. The issue was discovered after an inspection by private investigators and Union Pacific officials revealed that when the circuits were … [Read more...]
在高频段关键元件的评估和高电流的设计中穿心电容的精确测量
George M.Kauffman (乔治·考夫曼) 在几乎所有的低通滤波器中,并联电容器都是关键元件。穿心电容器具有的形式为一接地壳体中心有一电极穿过，从电极到接地外壳间形成它所需的电容值，几乎消除了引线电感的影响。本文将介绍穿心电容器的重要性，并给出改进的方法以实现对关键部件的高频性能测试。对于设计、应用条件、进货检验或质量审核中进行穿心电容的评估，需要用到一个可重复使用的装置来测试其插入损耗性能。高电流和高性能滤波器的测试对于元件测试具有特殊的挑战性。这里的高电流指的是额定电流大大超过30安培，并直到和超过400安培。高性能一般是指频率至少高达1GHz时，其插入损耗大于30dB。 图1 … [Read more...]
FTC Issues Complaint to Prevent Near-Monopoly in PCIe Switch Market
The Federal Trade Commission has issued an administrative complaint in an effort to stop electronics component manufacturer Integrated Device Technology, Inc. (IDT) from acquiring PLX Technology, Inc. The proposed $330 million deal would allegedly give IDT a near-monopoly in the PCIe switch market. According to the FTC’s complaint, customers have traditionally used the … [Read more...]
Unmanned Drone Passes Compatibility Tests with Aircraft Carrier Systems
The U.S. Navy has completed the first round of testing on an experimental drone that has the potential to change the future of naval aviation. The X-47B Unmanned Combat Air System was put through a series of mechanical and engineering tests designed to assess the drone’s compatibility with an aircraft carrier’s electronic systems and physical structure during a two-week period … [Read more...]
DARPA Contest Looks for Solution to “Blast” Through Everyday Radio Transmissions in Emergency Situations
DARPA has created a technology challenge competition in an effort to develop a new communications system capable of “blasting” through everyday radio transmission “clutter” in emergency response and battlefield applications. The Spectrum Challenge is designed to motivate teams to create software-defined radio protocols that “that best use communication channels in the presence … [Read more...]
Quantum Imaging Experiment May Lead to “Unjammable” Aircraft Radar Detection System
Researchers at the University of Rochester in New York have utilized a technique based on the quantum properties of photons to develop the possible first “unjammable” aircraft radar detection system. Traditionally, anti-detection methods include drowning radar signals out with noise or launching false signals. Menhul Malik and his colleagues have developed a system capable of … [Read more...]
EMI/EMC Design and Troubleshooting
Title: EMI/EMC Design and Troubleshooting Date: May 07 - 09 2013 Location: Braintree, MA Description: Besser Associates will be offering a course on the methodology of designing an electronic product to minimize the possibilities of electromagnetic interference issues. Topics will include the basics of EMI/EMC, grounding filtering, potential design blocks, shielding and cable … [Read more...]
EMI/EMC in Military Systems
Title: EMI/EMC in Military Systems Date: April 09 - 11 2013 Location: Columbia, Md. Description: Kimmel Gerke Associates, Ltd. is offering a course focused on military EMI/EMC issues at the systems and interface levels. Topics include grounding, power, cables and connectors, shielding and MIL-STD-461 & MIL-STD 464 standards. Learn More: Click here … [Read more...]
EDI CON 2013
Title: EDI CON 2013 Date: March 12 - 14 2013 Location: Beijing, China Description: The Electronic Design Innovation Conference is an industry-driven conference and exhibition for radio frequency, microwave, EMC/EMI and high-speed digital design engineers and system integrators developing products for today’s communication, computing, RFID, wireless, navigation, aerospace and … [Read more...]
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