Abstract: In this paper, a low-cost K-band phased array antenna is designed for LEO satellite communication. The design reduces the number of T/R components by allowing multiple elements to share a ...

Abstract: The rotating phase of orbital angular momentum (OAM) waves can bring new degrees of freedom in the wireless communication and microwave imaging realms, and more generally for inverse ...

Astronomers have observed enormous filaments of galaxies tied together with dark matter — the stuff scientists believe makes up 85 percent of the total mass of the universe — stretching across ...

In June 2025, photographs accurately reported Norway had developed and installed underwater turbines for energy production that were friendly to marine life. Rating: False (About this rating?) Context ...