Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...

Abstract: Radar imaging based on orbital angular momentum (OAM) beams has become a significant approach to realize high resolution and multidimensional target detection. The irradiation of a target ...

Abstract: A planar antenna radiating twisted beams with different azimuthal order and a consistent beam angle is designed by employing a single uniform circular array embedded in a Fabry-Perot cavity.