ufiq.blogg.se - Question paper of antenna and wave propagation

We designed, manufactured, and experimentally proved the multifunctional integrated full-space metasurface. When σ+ CP waves at 17 GHz is incident from the lower half of space, the reflective holography is realized. When a CP wave with different handedness at 10 GHz is incident from the upper half of space, focusing and diverging lenses are realized, respectively. When left-handed circularly polarized (σ+ CP) waves at 8 GHz is incident from the lower half of space, deflection is realized. Under circularly polarized (CP) wave incidence, the proposed multifunctional metasurface performs four functions at three distinct frequencies. The functions are expanded via decoupling the resonance of different layer structures or decoupling its phase modulation. Here, a multilayer geometric phase metasurface is proposed. However, further expansion of functions in integrated devices is still challenging.

Integrated meta-devices can increase data capacity and functional diversity. Highly integrated planar meta-devices have attracted much attention in optics and communication, which can achieve multitasking wavefront manipulations at multiple frequencies.

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