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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 broadband dual‐polarized planar antenna with simple reflector is introduced. The antenna is composed of two pairs of circular slotted square arms which are coupling‐fed by two fan‐shaped microstrip lines. By properly adjusting the feeding structure, the antenna can be connected to 50‐Ω coaxial lines directly, making the antenna full planar. Due to the fan‐shaped microstrip stub and the tight coupling...
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