More brands are launching screenless trackers to keep you focused, not distracted. I tested the Polar Loop to see if it delivers.

At one point, I even threaded a Whoop strap through the Polar Loop device so that I could wear both devices on the same ...

Abstract: Phased array antennas (PAAs) with flexible and agile wide-angle beam scanning (WABS) abilities have drawn rapidly increasing attentions in recent years. They have found significant ...

Radio over fiber transports RF signals via optical fiber, enabling low-loss distribution for wireless networks, radar systems, and radio astronomy applications.