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In this paper, an ultra-wideband (UWB) Vivaldi array with low radar cross section (RCS) is presented. An UWB band-stop frequency selective surface (FSS) is introduced to replace the metal reflect board of the array so that the RCS of the antenna can be reduced in a wide frequency band while the radiation performances of the antenna are maintained. The proposed array operates over the frequency band...
In this paper, a two-layer miniaturized-element metasurface is investigated to achieve in-band and out-of-band radar cross section reduction (RCSR) of a microwave patch antenna. The 2∗2 periodic modified versions of traditional square-rings with eight resistors mounted on each side are adopted to construct the upper layer metasurface for absorbing the incoming wave out of band. The lower one is composed...
In this paper, A multi-layered composite wideband absorbing material covering dual band is designed and fabricated. The upper layer is a traditional absorber while the lower one is a dual-frequency frequency selective surface (FSS) formed by a square ring and an improved Jerusalem cross structure. The absorbing band has been broadened significantly compared with those of the traditional absorber without...
A novel miniaturized frequency selective surface (FSS) is proposed.The size reduction is achieved by using the model of leaf arrangement. Compared with conventional cross FSS, the operation frequency of this novel bionic FSS is changed from 10.4 to 4.74 GHz at the same size. Both theoretical and experimental investigations are carried out. It is observed that the miniaturized FSS presents excellent...
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