Abstract: This study presents a method to form flat-topped beams of various shapes in the radiating near field for various forms of rectenna arrays by means of superposing multi-beam. The method is ...

Abstract: Far-field ultrasound arrays are the foundation of many technical applications. Examples are environmental perception in robotics, non-destructive testing and ultrasonic flow metering. These ...

May 3, 2026 • The Stillaguamish Tribe in Washington state has been buying land in its traditional territory and removing levees. The goal is to turn farmland into wetlands with the hopes of restoring ...