For decades, engineers have searched for underground tunnels by sending signals from the surface downward—an approach that can miss what lies below. By reversing that approach, researchers at the ...

Sound can be represented with both analog or digital audio signals. Analog audio signals use electrical voltage levels. Different types of transducers convert sound to electrical signals and ...

Researchers have built a miniaturized microcomb-driven terahertz wireless communication system that's 90 times smaller than conventional chips to deliver record-breaking data-transfer speeds at ...

A research team led by Prof. Chen Yan at the University of Science and Technology of China (USTC) has taken a leap forward in cardiovascular health monitoring. They have developed a non-invasive radio ...

Coherent interleaved sampling is a new technique that can acquire data faster with more data points than sequential sampling. Engineers who need to characterize semiconductor devices, high-speed ...

Using the same technology that allows high-frequency signals to travel on regular phone lines, researchers tested sending extremely high-frequency, 200 GHz signals through a pair of copper wires. The ...