Abstract: The purpose of this paper is to design and simulate a unit cell with wideband and multi-polarization for a reflect-array antenna. The bandwidth of the proposed structure is greater than 70% ...

Abstract: A new wideband planar substrate-integrated phased array is presented in this article. The array element is based on an open slot excited by a coaxial probe. A T-shaped stripline with ...

Optical vortices—light beams carrying orbital angular momentum (OAM)—are characterized by helical wavefronts and phase singularities. While they have been widely studied in recent decades, two ...

Discarded human hair and strings littering New York City streets are causing serious injuries to pigeons, sometimes costing them their lives. Michael Cavaliere, a staff member at the Wild Bird Fund, ...

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