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Radio

Space

New research may improve the accuracy of "cosmic yardsticks"

Astronomers have discovered evidence that could help solve a long standing dispute over the origin of Type Ia supernovae, by observing the youngest example of the titanic explosions located to date. The light from the rare breed of supernovae is used by scientists as a cosmic yard stick to chart the expansion of our universe.Read More

Mobile Technology Review

GoTenna review: Text and share your location anywhere, without a signal

Whether it be in the wilderness or at a crowded event, there is nothing more frustrating for many people than the dreaded no signal icon or "message not sent" being displayed on their smartphone display. GoTenna is a pen-sized Bluetooth device that is designed to keep your group connected to each other, even when there's no network around. We tried out a pair deep in the southern Rocky Mountains to see how they performed.Read More

Telecommunications

Mitsubishi's SeaAerial turns fountains into antennae

When someone mentions a radio aerial, it tends to conjure up a vision of something made of steel and wire. But what about one made of water? On Thursday, the Mitsubishi Electric Corporation unveiled its SeaAerial, which uses a column of seawater sprayed into the air to create a radio transceiver antenna. Designed for use at sea or offshore, it's billed as the world's first seawater antenna capable of receiving digital terrestrial broadcasts.Read More

Space

Astronomers trace the magnetic field of the supermassive black hole at the center of our galaxy

A team of astronomers has successfully detected magnetic fields present around the event horizon of the supermassive black hole at the center of our galaxy. It is thought that these magnetic fields are the driving factor behind a mechanism that sends intense pulses of galaxy sculpting radiation blasting thousands of light-years into space from the event horizon of a spinning black hole.Read More

Medical

Shape-shifting nanoprobes report on internal body conditions using magnetic fields

Scientists have developed a new type of shape-shifting nanoprobe that can perform high-resolution remote biological sensing not possible with current technology. Around one-tenth the size of a single red blood cell, the nanoprobes are designed to provide accurate feedback on internal body conditions by altering their magnetic fields in response to their environment. The researchers predict wide-spread applications for the nanoprobes in the fields of chemistry, biology, engineering and, one day, to aid physicians in high-accuracy clinical diagnostics.Read More

Telecommunications

Full-duplex radio integrated circuit could double radio frequency data capacity

Full-duplex radio communication usually involves transmitters and receivers operating at different frequencies. Simultaneous transmission and reception on the same frequency is the Holy Grail for researchers, but has proved difficult to achieve. Those that have been built have proven complex and bulky, but to be commercially useful in the ever-shrinking world of communications technology, miniaturization is key. To this end, engineers at Columbia University (CU) claim to have created a world-first, full-duplex radio transceiver, all on one miniature integrated circuit.Read More

Space

Combination radio/radar imaging produces stunning view of Venus

A team of astronomers combining radio data from the Green Bank Telescope, West Virginia, and data from the radar transmitter at the National Science Foundation's Arecibo Observatory, Puerto Rico, have compiled a stunning new view of Venus. Often described as Earth's twin due to its similar proportions, capturing high quality images of the inhospitable planet has traditionally been a challenging prospect thanks to extreme atmospheric conditions. However, by combining observations from the instruments to create a more complete picture of Venus, astronomers can begin to observe how this enigmatic celestial object evolves over time.Read More

Electronics

World's first fully digital radio transmitter built purely from microprocessor technology

For the first time in history, a prototype radio has been created that is claimed to be completely digital, generating high-frequency radio waves purely through the use of integrated circuits and a set of patented algorithms without using conventional analog radio circuits in any way whatsoever. This breakthrough technology promises to vastly improve the wireless communications capabilities of everything from 5G mobile technology to the multitude devices aimed at supporting the Internet of Things.Read More

Electronics

New RF circulator to run rings around old technology

In the world of electronic components, there are many devices out there that do their job well and reliably, but are almost never heard of – even though they may be vital to equipment that plays a role in our technology-driven lives. The radio frequency (RF) circulator is just such a device: it has simply done its job as a nondescript box of gubbins buried in radio communications systems, quietly directing radio frequency signals to the places they should go. Now researchers at the University of Texas have given the RF circulator a makeover. Not only is the new prototype smaller, lighter, and cheaper, it's also claimed to be easily adapted to different frequencies on the fly, which is something the old style circulator cannot do.Read More

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