A new study from Danish researchers suggests the ongoing push towards global 4G roaming and high-quality, frequency-reconfigurable antennas will need to account for new loss capacities not considered by previous technology. The worldwide demand for 4G technology and higher data rates in cell phones has led to a new, urgent need for frequency-reconfigurable or tunable antennas. … [Read more...]
Microwave Multi-Tool Steps Towards PROMFA Development
Researchers in Spain and the United Kingdom have developed a resonator element capable of simultaneously acting as both a filter and an antenna in a major step towards the development of programmable microwave function arrays (PROMFAs). The so-called microwave circuit equivalent of an FPGA is a network of microwave hardware that can be reconfigured to take on different circuit … [Read more...]
Researchers Discuss Narrowband EM Absorbers in New Research
While providing an overview of different types of narrowband electromagnetic absorbers, researchers from the Zhejiang University in Hangzhou and the Taiyuan University of Technology in China point out ways to create effective broadband/multiband absorbers with crucial applications in fields like solar-energy harvesting. The review article “Plasmonic and metamaterial structures … [Read more...]
No-Power Wi-Fi Connectivity May Boost Internet of Things
Researchers at the University of Washington have developed a communication system that uses radio frequency signals and repurposes existing Wi-FI infrastructure to supply power and provide Internet connectivity, respectively, to battery-free devices. Known as Wi-Fi backscatter, this technology is the first of its kind capable of connecting battery-free devices to Wi-Fi … [Read more...]
Software Release Includes New Commercial Radio System and Digital Noise Signal Definitions
Delcross Technologies has announced the release of the Electromagnetic Interference Toolkit (EMIT) version 3.4 software offering an array of new features such as 13 new pre-defined transceiver, receiver and transmitter definitions for commercial radio systems and the ability to define noise sources for receiver desense analysis applications. Designed to address RF cosite … [Read more...]
RF/Microwave Component Library Available Free to Genesys Users
Agilent Technologies has announced the Modelithics COMPLETE library of RF and microwave component model libraries is available free of charge for six months to users of Genesys 2014 that are new to Modelithics. The Modelithics COMPLETE library contains over 10,000 RF/microwave components with accurate nonlinear models for active devices and highly scalable linear models for … [Read more...]
New Single-Photon Optical Transistor Could Lead to Faster Data Transmission
Using an ultracold quantum gas, researchers at the Max Planck Institute of Quantum Optics in Germany have created a new kind of transistor-like optical amplifier that allows for a twentyfold amplification of single-photon signals. Although fiberoptic technology has helped speed along data transmission and telecommunications in general, researchers have hoped to find another … [Read more...]
New Hyperbolic Metamaterial Lets Light Out, Not In
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...]
Valley Current Properties of New Transistor Material Could Outdo Silicon
Researchers at Cornell University have identified and tested a semiconducting compound that could outdo silicon in terms of performance, and could signal the emergence of a new kind of transistor material in electronics. The findings, compiled in the paper, “The Valley Hall Effect in MoS2 Transistors,” published recently in Science, revealed promising conductive capabilities … [Read more...]
Software Optimizes Wind Farm Location to Reduce Telecom Interference
Researchers collaborating on the SOPCAWIND project have developed software to optimize wind farm placement, in order to reduce noise, environmental impact, and telecommunications interference. Wind farms, while a valuable and viable source of energy, reportedly meeting up to 8 percent of Europe’s energy needs, are accompanied by significant drawbacks; namely, noise … [Read more...]
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