Abstract: In this paper, a low-cost K-band phased array antenna for satellite communication is designed. he phased array adopts a subarray sparse architecture to reduce the number of T/R components.

WASHINGTON, Dec 24 (Reuters) - U.S. President Donald Trump's mass recall of ambassadors will leave Washington without top-level presence in more than half of the countries in sub-Saharan Africa, ...

Abstract: In this paper, we study the downlink precoding of spatial non-stationary (SnS) extremely large-scale multiple-input multiple-output (XL-MIMO) in the near-field channel with uniform spherical ...

LONDON—President Trump’s crackdown on Chinese imports in the U.S. has redirected a tsunami of cheap stuff into Europe. Some of it is pooled in Xue Er’s backyard. A stay-at-home mom in her 40s who ...