Abstract

In this paper, a novel metasurface-based decoupler is proposed to reduce mutual coupling of a wideband stacked patch array antenna. The metasurface-based decoupler consists of a metasurface made of periodic square rings and a dielectric rod array made of transparent resin. The whole structure is able to reject propagation of space coupling wave, realize wideband decoupling and partly change the coupling mode. Different from previously reported some metasurface decoupling solutions, the proposed method does not deteriorate matching condition and no need to rematch. Besides, by using dielectric rod array to complement insufficient isolation enhancement of metasurface, the metasurface-based decoupler shows a wider decoupling bandwidth compared with conventional metasurface decoupling solutions.

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