Radio Waves

Researchers have demonstrated a new approach to harnessing the power of ambient radio waves, developing a novel chip that can convert Wi-Fi signals into power for a small LED, and possibly other small electronics and sensors.

The mystery of fast radio bursts may be closer to being solved. Astronomers studying a repeating signal from a nearby galaxy have detected radiation at the lowest frequency of any FRB found so far, providing new potential hints about their origin.

Even though at-home use of an inhaler or insulin pen can be extremely important, doctors have to pretty much just hope that patients are doing it right. A new system, however, could objectively assess patients' technique within their homes.

By studying the twinkling of stars, astronomers in Australia have discovered a huge cloud of cold gas in our galaxy, not far from Earth. This invisible mass could provide new hints about where to find the universe’s missing matter.

NRAO has announced a new addition to NASA’s upcoming moon-shot Artemis program. From the silent skies on the far side of the Moon, the DAPPER spacecraft will listen out for radio signals from the cosmic “Dark Ages,” before the first stars fired up.

In order to track how someone's body position changes as they sleep, they typically have to be rigged up with sensors, or filmed by a video camera. MIT's new BodyCompass system, however, offers a third alternative that many people may prefer.

We may be a step closer to understanding the mystery of fast radio bursts (FRBs), as astronomers have now detected the first such signal from within our own galaxy. It was traced to a magnetar, which could be key to unlocking the origins of FRBs.

A new view of the Milky Way has revealed how the galactic center would appear to human beings if our eyes were able to detect low-frequency radio waves.

Researchers have, for the first time, used a semiconductor laser​ to send and receive radio signals. The hybrid electronic-photonic device uses a laser to extract and transmit microwave signals, providing a data rate that may one day lead to ultra-high-speed Wi-Fi.

​China’s history-making Chang’e-4 spacecraft touched down on the far side of the Moon last week, and it opened up some exciting new avenues of scientific enquiry. Among them is an ability to tune into low-frequency radio waves in ways we never have before, so what could they tell us?

An MIT team has hooked the latest version of a radio scanning technology that can see through walls to an artificial intelligence (AI) neural network. The AI was trained to deduce a person's postures and movements even when completely hidden.

Traditional batteries are large, contain toxic chemicals, and need to be periodically replaced, meaning they're not ideal for powering medical implants. But new research from MIT and Brigham and Women’s Hospital has demonstrated a new way to power implanted devices using radio waves.