Abstract: The limited applications of current Van Atta arrays in various fields are primarily due to their narrow working bandwidths. This letter designed an ultrawideband Van Atta retrodirective ...

Six of Earth’s neighboring planets are about to come into view at once, but skywatchers should temper expectations. Here’s how to use optics to get the most from the event. When you purchase through ...

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From image-stabilized binoculars to the smartest telescopes, here are some of the most technologically advanced astronomy gear you can get. When you purchase through links on our site, we may earn an ...

Alysa Liu is left to carry the hopes of the "Blade Angels" into the women's free skate at the Milan Cortina Olympics after Amber Glenn and Isabeau Levito didn't get the scores they were looking for to ...

Abstract: In this article, a machine-learning-assisted antenna array isolation optimization method for bistatic in-band full-duplex (IBFD) communication systems based on a novel intelligent surface ...