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Radio


— Science

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

By - April 5, 2015 3 Pictures
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

By - March 17, 2015 1 Picture
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

By - March 16, 2015 2 Pictures
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

By - March 5, 2015 1 Picture
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

By - November 12, 2014 2 Pictures
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
— Electronics

Ant-sized radios could help connect trillions of devices to the Internet of Things

By - September 15, 2014 1 Picture
A team of researchers from Stanford University and the University of California, Berkeley, has created prototype radio-on-a-chip communications devices that are powered by ambient radio waves. Comprising receiving and transmitting antennas and a central processor, the completely self-contained ant-sized devices are very cheap to manufacture, don't require batteries to run and could give the "Internet of Things" (IoT) a serious kick start. Read More
— Space

Juno sends back "starship" view of Earth while ham radios say "Hi"

By - December 12, 2013 4 Pictures
If you want to have a starship captain’s view of flying past the Earth, then NASA is happy to oblige. This week, the space agency released a video made of images taken by the Juno space probe as it shot past our planet last October. The unmanned spacecraft was using the Earth’s gravity to build up its velocity by over 8,800 mph (14,100 km/h) and slingshot it on its way to Jupiter. And as it did so, it took the time to receive a “Hi” from ham radio operators back home. Read More
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