Full and Independent Manipulation of Co- and Cross-polarized Waves with Metasurface
Keywords:
Co-polarized, cross-polarized, metasurface, manipulationAbstract
A novel metasurface based on the amplitudephase manipulation and beamforming is proposed for the control of co- and cross-polarized wave simultaneously and independently. The metasurface consists of two polarization conversion elements (PCEs) and their mirrors: the two PCEs are used to control the co-polarized waves with the co-polarized field component of equal amplitude and opposite phase, and the mirrors of them that are intent to control the cross-polarized waves. Full manipulation of the amplitude and phase for both coand cross-polarized components of the reflected waves is realized by adjusting the geometric parameters of two PCEs. Compared with the traditional co-polarized phaseonly manipulation, freedom degree of manipulation is increased from 1 to 4, which greatly increases the ability of manipulating electromagnetic waves. The arrangement of PCEs is obtained based on the planar array theory to achieve the desired co-polarized and cross-polarized scattering patterns. The theoretical analysis, simulation and experiment results are in good agreement and verify the proposed mechanism.
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