News tagged with radio frequency
Ultralow-power memory uses orders of magnitude less power than other devices
(PhysOrg.com) -- As RFID tags are becoming more widespread for tracking and identifying almost anything, researchers are continuing to develop cheap, ultralow-power memory devices for these applications. In ...
Aug 26, 2010 |
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No-photon laser: Physicists demonstrate 'superradiant' laser design
Physicists at JILA have demonstrated a novel "superradiant" laser design, which has the potential to be 100 to 1,000 times more stable than the best conventional visible lasers. This type of laser could boost ...
Apr 04, 2012 |
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Smart skin: Electronics that stick and stretch like a temporary tattoo (w/ video)
Engineers have developed a device platform that combines electronic components for sensing, medical diagnostics, communications and human-machine interfaces, all on an ultrathin skin-like patch that mounts ...
Aug 11, 2011 |
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IBM creates first graphene based integrated circuit
(PhysOrg.com) -- Taking a giant step forward in the creation and production of graphene based integrated circuits, IBM has announced in Science, the fabrication of a graphene based integrated circuit on a s ...
Jun 10, 2011 |
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New electromechanical circuit sets record beating microscopic 'drum'
Described in the March 10 issue of Nature, the NIST experiments created strong interactions between microwave light oscillating 7.5 billion times per second and a "micro drum" vibrating at radio frequencies 11 mil ...
Mar 09, 2011 |
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Metamaterials approach makes better satellite antennas
(PhysOrg.com) -- Cheaper, lighter and more energy-efficient broadband devices on communications satellites may be possible using metamaterials to modify horn antennas, according to engineers from Penn State ...
Jan 31, 2011 |
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Nano-based RFID tags could replace bar codes
Long lines at store checkouts could be history if a new technology created in part at Rice University comes to pass.
Mar 18, 2010 |
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'Microrings' could nix wires for communications in homes, offices
(PhysOrg.com) -- Purdue University researchers have developed a miniature device capable of converting ultrafast laser pulses into bursts of radio-frequency signals, a step toward making wires obsolete for ...
Mar 03, 2010 |
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WHO study suggests link between cell phones and tumors
(PhysOrg.com) -- Preliminary results of an International investigation by the World Health Organization (WHO) suggest there may be a "significantly increased risk" of some types of brain tumors after use of ...
Oct 27, 2009 |
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Physicists Turn to Radio Dial for Finer Atomic Matchmaking
(PhysOrg.com) -- Investigating mysterious data in ultracold gases of rubidium atoms, scientists at the Joint Quantum Institute of the National Institute of Standards and Technology and the University of Maryland ...
Oct 20, 2009 |
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New radio chip mimics human ear, could enable universal radio (w/Video)
(PhysOrg.com) -- MIT engineers have built a fast, ultra-broadband, low-power radio chip, modeled on the human inner ear, that could enable wireless devices capable of receiving cell phone, Internet, radio ...
Jun 03, 2009 |
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Quantum cat's 'whiskers' offer advanced sensors
(PhysOrg.com) -- A team led by Oxford University scientists has turned one of the key problems with quantum entangled systems - that they are easily ‘disturbed’ by their environment - into an advantage which ...
Apr 24, 2009 |
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New Wireless 60 GHz Standard Promises Ultra-Fast Applications
(PhysOrg.com) -- Ultra-high-speed wireless connectivity - capable of transferring 15 gigabits of data per second over short distances - has taken a significant step toward reality. A recent decision by an ...
Jan 15, 2009 |
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Scientists design indoor navigation system for blind
University of Nevada, Reno computer science engineering team Kostas Bekris and Eelke Folmer presented their indoor navigation system for people with visual impairments at two national conferences in the past ...
May 18, 2012 |
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Verizon to auction spectrum worth billions
Verizon Wireless on Wednesday said it will auction a parcel of radio frequencies, which could be worth billions of dollars in an industry scrambling to offer consumers more cellular broadband.
Apr 18, 2012 |
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Radio frequency
Radio frequency (RF) is a frequency or rate of oscillation within the range of about 3 Hz to 300 GHz. This range corresponds to frequency of alternating current electrical signals used to produce and detect radio waves. Since most of this range is beyond the vibration rate that most mechanical systems can respond to, RF usually refers to oscillations in electrical circuits.
For more information about Radio frequency, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
