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. 2015 Apr 15;5:9605. doi: 10.1038/srep09605

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(a) The sketch of the measurement system. A linear-polarized horn antenna is used as excitation to generate linear-polarized normally incident waves, and another linear-polarized horn antenna is placed having an angle of θ with metasurface as receiver to receive the circular-polarized reflected waves by rotating 360 degrees of the horn. (b) The photograph of the fabricated metasurface. (c) The measured far-field patterns of the reflected waves at 10 GHz, which show that both horizontal (x) and vertical (y) polarized waves are all deflected to θ = 24°. (d) The measured polarization pattern of the reflected waves at 10 GHz.