Telecommunications

With digital devices powering every aspect of life and business, telecommunications providers are going neck and neck to provide faster internet speeds at scale―using fiber technology as a linchpin.... Read more

Wireless power transfer (WPT) systems transmit electrical energy from a power source to a load without physical connectors or wires, using electromagnetic fields. This idea goes as far back as the 1890s, when Nikola Tesla famously experimented with wireless energy transmission.... Read more

Researchers at EPFL and Harvard University have engineered a chip that can convert between electromagnetic pulses in the terahertz and optical ranges on the same device. Their integrated design could enable the development of devices for ultrafast telecommunications, ranging, spectroscopy, and computing.... Read more

Smartphones must stay connected to mobile networks at all times to function properly. The core component that enables this constant connectivity is the communication modem (baseband) inside the device. KAIST researchers, using their self-developed testing framework called LLFuzz (Lower Layer Fuzz), have discovered security vulnerabilities in the lower layers of... Read more

Researchers from IMDEA Networks, in collaboration with Universidad Carlos III de Madrid, IMDEA Software Institute, and the University of Calgary, have conducted the first large-scale study—"Your Signal, Their Data: An Empirical Privacy Analysis of Wireless-scanning SDKs in Android"—on how certain Android mobile applications use a device's WiFi and Bluetooth connections... Read more

Southwest Research Institute (SwRI) is expanding its antenna measurement capabilities with a state-of-the-art spherical near-field antenna range. The 1,260-square-foot indoor range, lined with radio frequency and microwave foam absorbers, is equipped to accurately sample the near field of an antenna. Near-field measurements can be mathematically transformed into far-field data.... Read more

Hi-tech surveillance technologies are a double-edged sword. On the one hand, you want sophisticated devices to detect suspicious behavior and alert authorities. But on the other, there is the need to protect individual privacy. Balancing public safety and personal freedoms is an ongoing challenge for innovators and policymakers.... Read more

The development of more advanced technologies to process radiofrequency signals could further advance wireless communication, allowing devices connected to the internet to share information with each other faster and while consuming less energy. Currently, radio frequency signals are processed using software-defined radios (SDRs), systems that can modulate, filter and analyze... Read more

Up to now, underwater navigation for divers has been limited primarily to orientation at distinctive points or compass navigation. Although there are concepts that, similar to a sonar, are intended to enable position determination using acoustic signal sources, these require a high sound pressure level. This affects the ecosystem and... Read more

In wireless communication, spectrum—radio frequencies that allow devices to communicate over the air—is king.... Read more

Analog repeaters dramatically enhance millimeter-wave (mmWave) coverage in mobile networks by overcoming signal blockage, report researchers from Science Tokyo. As demonstrated in a field experiment at Ookayama Campus, low-cost repeaters connected either wirelessly or via optical fiber offer a promising solution for 5G and 6G networks. Both configurations achieved over... Read more

Just because Elon Musk and Jeff Bezos aren't the best of friends, and Amazon's Project Kuiper will directly compete with SpaceX's Starlink satellites for broadband internet, doesn't mean everyone can't still get along.... Read more

Terahertz frequencies above 100 GHz offer extremely wide bandwidths suitable for next-generation wireless communications, and research toward their practical use is ongoing worldwide. In particular, the 150 GHz and 300 GHz bands are actively being studied in Japan due to their relatively low atmospheric attenuation, which enables stable signal propagation.... Read more

A research team affiliated with UNIST has unveiled a new semiconductor device optimized for the next-generation 6G era and autonomous driving, offering low power consumption and nonvolatile operation. This innovative device can also be integrated into variable filter circuits capable of tuning the central frequency band, paving the way for... Read more

Countries have come to rely on a network of cables and pipes under the sea for their energy and communications. So it has been worrying to read headlines about communications cables being cut and, in one case, an undersea gas pipeline being blown up.... Read more