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Antennas

Maglev Hovering Train Breaks Speed Record

 

A seven car Maglev (magnetic levitation) Train in Central Japan broke its own speed record when tested near Mount Fuji this week. In 2003 the Maglev’s record was 268 mph and last week it reached 366 mph. On Tuesday the Maglev surpassed both previous records and reached 374 mph. The Maglev train hovers four inches above the tracks and is propelled by electrically-charged … [Read more...]

Invisible Objects Created in the Microwave Range Without Metamaterial Cloaking

 

Physicists from ITMO University, Ioffe Institute and Australian National University have made homogenous cylindrical objects entirely invisible in the microwave range without metamaterial cloaking. Until now, invisibility relied on metamaterial coatings, which can change the direction of light and make light curve around cloaked objects. However, with a new understanding of … [Read more...]

FBI Pulled Security Expert from Flight for Alleged Hacking Concerns

 

The FBI pulled Chris Roberts, a computer security expert, from his United Airlines Flight last Wednesday in Syracuse because of suspicions that he hacked the airplane. Roberts tweeted referencing the plane’s communication systems suggesting he was going to use his laptop to force the plane’s emergency oxygen masks to deploy. The tweet read: “Find Myself on a 737/800, let’s see … [Read more...]

Breakthrough in Electromagnetism to Improve Global Communication

 

Researchers from the University of Cambridge in England have announced an electromagnetic breakthrough – the production of an antenna so small that it can be incorporated into electronic chips. They realized electromagnetic waves are not only generated from acceleration of electronics, but also from symmetry breaking. “Symmetry breaking in physics describes a phenomenon where … [Read more...]

Programmer Hacks Own Wi-Fi Using Electromagnetic Waves

 

Jason Cole, a programmer and Ph.D. student at Imperial College in London, created an Android app that allows users to hack their own Wi-Fi using electromagnetic waves. Many believe it’s best to avoid electromagnetic radiation; however, not all believe electromagnetic waves are bad. Electromagnetic waves carry Wi-Fi signals to all electronic devices and are the foundation of … [Read more...]

Ham Radios Assist Police in Catching Indoor Drug Growing Operations

 

Ham Radio operators can assist police in catching indoor marijuana growers who are causing radio frequency interference. Operators can help by taking a radio and portable antenna into their neighborhood and using the radio to find the location of the often illegal plant being grown. This RFI can produce many different sounds. “It can be pops, it can be a buzzing sound, … [Read more...]

NASA’s SMAP Instrument Has Largest-Ever Antenna, Resists RF Interference

 

On Jan. 29, 2015, NASA will launch its Soil Moisture Active Passive (SMAP) instrument into space, where it can accurately measure Earth’s soil moisture levels via a mesh antenna of record-breaking size. The instrument is comprised primarily of a radar, a radiometer, and the largest rotating mesh antenna ever launched into space. Once in action, SMAP will gather data that will … [Read more...]

High Performance Ceiling Mount Antennas Yields Industry Low Peak Gain

 

A new multiple-input/multiple-output distributed antenna system has been introduced by Pulse Electronics. This DAS ceiling mount system includes high port-to-port isolation and improved gain patterns for both of its ports. "Often MIMO antennas have problems with non-circular gain patterns with high deviation from min-to-max gains. In MIMO or neutral host applications the … [Read more...]

New Antenna Yields Results

 

A new antenna has been designed that uses “ionized gas in fluorescent light tubes to transmit Internet wireless frequency signals throughout a building with the aid of already existing electrical wiring.” This works because the gas turns into plasma when it it’s electrically charged and this means frequency signals can be sent and received since the plasma becomes a conductive … [Read more...]

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