News tagged with microwave frequencies
Novel holographic antenna designs and uses
Holographic antennas first studied around 40 years ago are again a hot topic given the potential of holographic images for a variety of applications. EU researchers developed novel prototype devices based ...
May 30, 2012 |
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Researchers develop first silicon wafer-scale 110 GHz phased array transmitter
(PhysOrg.com) -- TowerJazz, the global specialty foundry leader, and The University of California, San Diego, provider of a leading program in microwave, millimeter-wave and mixed-signal RFICs, today announced ...
Apr 06, 2012 |
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The tick-tock of the optical clock
(PhysOrg.com) -- UK's National Physical Laboratory time scientists have made an accurate measurement of the highly forbidden octupole transition frequency in an ytterbium ion, which could be used as the basis ...
Mar 29, 2012 |
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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 |
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'Anti-atomic fingerprint': Physicists manipulate anti-hydrogen atoms for the first time (Update)
The ALPHA collaboration at CERN in Geneva has scored another coup on the antimatter front by performing the first-ever spectroscopic measurements of the internal state of the antihydrogen atom. Their results ...
Mar 07, 2012 |
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Scientists create first free-standing 3-D cloak
Researchers in the US have, for the first time, cloaked a three-dimensional object standing in free space, bringing the much-talked-about invisibility cloak one step closer to reality.
Jan 26, 2012 |
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Graphene mixer can speed up future electronics
Researchers at Chalmers University of Technology (Sweden) have for the first time demonstrated a novel subharmonic graphene FET mixer at microwave frequencies. The mixer provides new opportunities in future ...
Jan 03, 2012 |
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Scientists hope to create robot strawberry pickers
Scientists at the National Physical Laboratory (NPL), the UK's Measurement Institute, have developed an imaging technology which can identify the ripeness of strawberries before they are picked. The developers ...
Oct 19, 2011 |
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A quiet phase: NIST optical tools produce ultra-low-noise microwave signals
By combining advanced laser technologies in a new way, physicists at the National Institute of Standards and Technology (NIST) have generated microwave signals that are more pure and stable than those from ...
Jun 27, 2011 |
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Invisibility carpet cloak can hide objects from visible light
(PhysOrg.com) -- Most of the invisibility cloaks that have been demonstrated to date conceal objects at frequencies that are not detectable by the human eye. Designing invisibility cloaks that can conceal ...
Jun 15, 2011 |
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NIST tunes 'metasurface' with fluid in new concept for sensing and chemistry
(PhysOrg.com) -- Like an opera singer hitting a note that shatters a glass, a signal at a particular resonant frequency can concentrate energy in a material and change its properties. And as with 18th century ...
Jun 08, 2011 |
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Moth eyes inspire antireflective surfaces for military applications
(PhysOrg.com) -- If you look closely at the surface of a moth's cornea, you see that it is comprised of tiny protruding bumps. These bumps exist to keep moths safe from predators by preventing light from reflecting ...
Mar 08, 2011 |
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Breakthrough for photons in the microwave frequency range
Photons in the microwave frequency range are important in quantum research - for quantum information processors, for example. Now, for the first time, researchers have achieved the controlled production of ...
Feb 22, 2011 |
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Physicists discover ultrasensitive microwave detector
Physicists from Rice University and Princeton University have discovered how to use one of the information technology industry's mainstay materials -- gallium arsenide semiconductors -- as an ultrasensitive microwave detector ...
Dec 08, 2010 |
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For future chips, smaller must also be better
The explosion of portable communication devices that we enjoy today -- such as cell and smart phones, Bluetooth hands-free units, and wireless Internet networks -- has resulted in part from the development of a wide variety ...
Oct 05, 2010 |
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