Abstract: In this paper, a multifunctional scattering antenna array has been proposed to generate orbital angular momentum (OAM) vortex scattering wave and meanwhile reduce antenna radar cross section ...

Abstract: We compare the technique of using the orbital angular momentum (OAM) of radio waves for generating multiple channels in a radio communication scenario with traditional ...

Video from the U.S. Geological Survey showed Kilauea volcano spewing lava more than 800 feet into the air in its latest eruption on Hawaii's Big Island. USGS said the eruption began around 4:15 p.m.