News tagged with radio frequency
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 |
4.7 / 5 (3) |
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Splitting the SKA - why a dual-site setup is a win for everyone
The Square Kilometre Array (SKA) is a concept that's been slowly growing and evolving since 1991. But recently this ambitious project took a giant leap towards reality with the announcement of a SKA site decision.
Space & Earth / Space Exploration
May 28, 2012 |
5 / 5 (3) |
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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 |
4 / 5 (12) |
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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 |
4.9 / 5 (14) |
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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 |
4.8 / 5 (17) |
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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 |
4.8 / 5 (32) |
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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 |
4.2 / 5 (10) |
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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 |
5 / 5 (5) |
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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 |
5 / 5 (2) |
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US military unveils non-lethal heat ray weapon
A sensation of unbearable, sudden heat seems to come out of nowhere -- this wave, a strong electromagnetic beam, is the latest non-lethal weapon unveiled by the US military this week.
Mar 11, 2012 |
3.7 / 5 (19) |
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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 |
3.9 / 5 (13) |
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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 |
4.4 / 5 (5) |
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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 |
4.2 / 5 (23) |
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Countries agree on new mobile spectrum at radio conference
The International Telecommunication Union said Friday its World Radiocommunications Conference (WRC-12) has agreed a treaty aimed at revising the radio frequency spectrum to speed up mobile services.
Feb 17, 2012 |
5 / 5 (3) |
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TWINS/IBEX spacecraft observed impact of powerful solar storm from inside and outside Earth's magnetosphere
(PhysOrg.com) -- For the first time, instrumentation aboard two NASA missions operating from complementary vantage points watched as a powerful solar storm spewed a two million-mile-per-hour stream of charged ...
Space & Earth / Space Exploration
Mar 28, 2012 |
5 / 5 (1) |
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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.
