Researchers at the National Institute for Standards and Technology (NIST) have developed a new metamaterial made of silver, glass, and chromium that allows for the one-way transmission of visible light. Metamaterials are artificial materials engineered, combined and structured, often in patterns, to achieve certain properties. Among other functions, certain metamaterials can … [Read more...]
Researchers Boost Connectivity of Musical Wi-Fi Gloves
Scientists from the University of Bristol and the University of the West of England (UWE Bristol) have improved the performance of a pair of musical Wi-Fi gloves worn by popstar Imogen Heap. Used during Heap’s experimental live music performances to control both music and visuals with a series of gestures, the so-called Mi.Mu glove system must be robust enough to cope with … [Read more...]
Research on Radio Wave Behavior May Improve Multipath Interference Mitigation
New research on how radio waves interact and exchange energy could lead to the development of more precise indoor location systems. Like all electromagnetic waves, radio waves propagate at the speed of light, carrying a balance of electric and magnetic energy. The ratio between the magnitudes of the electric and magnetic fields is a physical constant known as the impedance of … [Read more...]
Beam-Switching Antenna Compensates for Aircraft Movement
A software-defined, electronically-reconfigurable antenna technology developed by researchers at the Georgia Institute of Technology has now been tested on land, in the air and on the ocean. U.S. Department of Defense representatives attended an event earlier this year in which the capabilities of Georgia Tech’s Agile Aperture Antenna (A3), which can change beam directions in … [Read more...]
RF Rotary Joints Prevent Cable Entanglement During Antenna Testing
Microwave and RF product supplier Fairview Microwave has released a new line of single channel/single-axis and single-channel/multi-axis RF rotary joints. Fairview’s RF rotary joints are designed to be used wherever RF signals have to be transmitted between stationary and moving parts of a system, including commercial and military radar, land-mobile radio communications and … [Read more...]
Australians to Study Effects of Electromagnetic Environment on F-35
Australian engineers have been contracted by the U.S. government to study the effects of electromagnetic compatibility and interference on the F-35A Joint Strike Fighter (JSF). The Defence Science and Technology Organisation (DSTO) unveiled a full-scale model of the Lockheed Martin-designed aircraft last week that will be used to test the plane's resistance to lightning and … [Read more...]
GaN-Based Amplifiers Up to 18 GHz and 1,000 W Output Power
API Technologies, a provider of high performance RF/microwave, power, and security solutions for critical and high-reliability applications, has expanded its line of gallium nitride-based amplifiers to include models that operate with output power levels up to 1,000 watts and frequencies to 18 GHz. Suitable as cost-effective replacements for traveling wave tube (TWT) … [Read more...]
Vancouver Café Blocks Wireless Signals
A new pop-up café in Vancouver, Canada is offering patrons a temporary escape from digital communication. Julien Thomas, a Vancouver construction worker and social artist, is opening The Faraday Café in Vancouver’s Chinatown with assistance from Hughes Condon Marler Architects. The café, which will be open July 2-16, is named after the Faraday cage, an enclosure made of a … [Read more...]
Semi-Shielded Power Inductor Series for DC/DC Converter Power Management Applications
Electronic component manufacturer Bourns, Inc. has released a new series of semi-shielded power inductors. The semi-shielded SRM model series combines the features of non-shielded and shielded inductors, making them ideal for use in DC/DC converters, which provide power management to mobile electronic devices, computers, data storage devices and consumer electronics. The SRN … [Read more...]
FCC Requests Input on LTE/DTV Interference Mitigation
The Federal Communications Commission’s Office of Engineering and Technology (OET) is asking for additional input on evaluations of potential interference from wireless LTE affecting DTV stations conducted recently by OET engineers. The FCC announced in October 2012 it would be hosting incentive auctions as a means to reallocate broadcast television spectrum for wireless … [Read more...]
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