X-Band Phase-Gradient Metasurface for High-Gain Lens Antenna Application


We have a tendency to propose a high-gain transmitting lens antenna by using layered phase-gradient metasurface (MS). The MS is designed to focus the propagating plane wave to a degree with high potency. An X-band patch antenna is placed at the focus of the MS as a feed supply, and then the quasi-spherical wave emitted by the supply is reworked to plane wave. Thanks to the successful conversion of quasi-spherical wave to plane wave, the beam width of the patch antenna has been decreased sixty six° and the gain has been enhanced 11.half-dozen dB. The proposed lens antenna not only opens up a new route for the applications of section-gradient MS in microwave band, but also affords another for top-gain antenna.

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