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An effective solution of generating OAM-carrying radio beams with three polarizations is provided. Through the reasonable configuration of phased antenna array using elements with three polarizations, the OAM radio waves with three polarizations for different states can be generated. The vectors of electric fields with different OAM states for linear, as well as left or right circular polarizations...
A new type of perforated dielectric flat reflectarray for the generation of OAM-carrying radio waves is presented. The reflectarray is introduced to transform the spherical wave emanating from the feed into a vortex beam after reflection through the azimuthal variation of the effective dielectric permittivity. Through perforating the substrate with holes of various diameters, an azimuthal variation...
The EM polarization properties of the active cylindrical coated nano particle antennas are investigated in the visible frequency band. It is observed that the active cylindrical coated nano particle could be illuminated by plane waves with horizontal polarization or vertical polarization, and show the dipole mode, although the resonant size of the particles are little different. Especially, when the...
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