News tagged with frequency technologies
Breakthrough for post-4G communications
Mar 05, 2009 |
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(PhysOrg.com) -- With much of the mobile world yet to migrate to 3G mobile communications, let alone 4G, European researchers are already working on a new technology able to deliver data wirelessly up to 12.5Gb/s.
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Highlight: Mechanical energy dissipation in ultrananocrystalline diamond microresonators
Aug 12, 2009 |
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Researchers in the Nanofabrication and Devices group at the Argonne National Laboratory, in collaboration with the University of Pennsylvania, Advanced Diamond Technologies Inc., and Innovative Micro Technology, ...
Sharing the air
Sep 22, 2009 |
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(PhysOrg.com) -- In the old days, when a new wireless technology came along, it got its own swath of the electromagnetic spectrum: AM radio uses 535 to 1,605 kilohertz, so television got chunks between 54 ...
Shifting sound to light may lead to better computer chips
Mar 16, 2009 |
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By reversing a process that converts electrical signals into sounds heard out of a cell phone, researchers may have a new tool to enhance the way computer chips, LEDs and transistors are built.
Team develops new metamaterial device
Feb 24, 2009 |
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An engineered metamaterial proved it can function as a state-of-the-art device in the complex terahertz range of the electromagnetic spectrum, setting a standard of performance for modulating tiny waves of radiation, according ...
Toward cheaper imaging systems for identifying concealed weapons on the human body
Jun 09, 2009 |
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Electrical engineers from UC San Diego have created high-performance W-Band silicon-germanium (SiGe) radio frequency integrated circuits (RFICs) for passive millimeter-wave imaging. This advance could lead to significantly ...
Most radiation oncologists utilize advanced medical imaging techniques, study suggests
Nov 25, 2009 |
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A recent study shows that 95 percent of radiation oncologists use advanced imaging techniques such as positron emission tomography (FDG-PET), magnetic resonance imaging (MRI), and 4-dimensional computed tomography (4DCT) ...
Intelligence inside metal components
Nov 24, 2009 |
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Up to now, extreme production temperatures made it impossible to equip metallic components with RFID chips during the operating process. At Euromold in Frankfurt (Dec. 2-5), Germany, Fraunhofer researchers ...
Sony develops highly efficient wireless power transfer system based on magnetic resonance
Oct 02, 2009 |
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Sony Corp. today announced the development of a highly efficient wireless power transfer system that eliminates the use of power cables from electronic products such as television sets. Using this system, ...
Scientists Build First 'Frequency Comb' To Display Visible 'Teeth'
Oct 29, 2009 |
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(PhysOrg.com) -- Finally, an optical frequency comb that visibly lives up to its name. Scientists at the University of Konstanz in Germany and the National Institute of Standards and Technology in the U.S. ...
Scientists develop world's smallest diamond transistor
Apr 14, 2009 |
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(PhysOrg.com) -- Scientists at the University of Glasgow have developed the world’s smallest diamond transistor.
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