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This paper presents a new type of metasurface (MTS) particularly suited to the integration of optically controlled switches. It consists of a checkerboard-type layout, made of electrically small complementary metallic patches and apertures. The characteristics of the supported electromagnetic field depend on whether the patches' vertexes are interconnected or not. Specifically, in a structure containing...
This paper presents an approach for the design of a dual-band planar antenna radiating an isoflux-shaped beam suitable for earth observation missions. The antenna is based on a modulated metasurface excited by a central feed. Preliminary numerical results are presented to validate the concept.
In this paper, Transformation Optics is exploited to design anisotropic modulated metasurfaces able to control the wavefront and Poynting vector distribution of surface waves. This methodology can be applied to design a large number of planar devices. As an example, a beam shifting device has been implemented using a metasurface consisting of dipoles printed on a grounded slab. The capability of the...
This paper is devoted to the analysis and design of a high-gain circularly polarized antenna with low profile for deep space communications in the X-band. In this context, the low-mass and high efficiency requirements can be addressed at the same time by properly designing a layer of patches (slots) printed (etched) on a grounded dielectric substrate. The interaction between this layer and the surface...
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