R. C. Mitchell-Thomas, I. Hooper, J. Sambles, A. Hibbins, O. Quevedo–Teruel
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This paper presents the design of a metasurface that exhibits glide symmetry. This allows the metasurface to support a mode that is confined to the surface for a broad band of frequencies. In addition it is shown that the mode index of such surfaces depends only weakly on the frequency over a given range. We then propose these structures as a practical solution to the fabrication of broadband surface-wave lenses designed using quasi-conformal transformation optics technique.
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