标题：Large area subwavelength cavity antenna with planar metamaterials
作者：Lu, Guang; Wang, Wei; Yan, Fabao; Diao, Chao; Zhou, Xiachen; Wu, Zhao; Liu, Fen; Sun, Yong; Du, Guiqiang; Chen, Yao
作者机构：[Lu, Guang; Diao, Chao; Zhou, Xiachen; Wu, Zhao; Liu, Fen; Du, Guiqiang; Chen, Yao] Shandong Univ, Sch Space Sci & Phys, Weihai 264209, Peoples R Chin 更多
通讯作者：Du, Guiqiang;Du, GQ;Du, GQ;Du, GQ;Du, GQ
通讯作者地址：[Du, GQ]Shandong Univ, Sch Space Sci & Phys, Weihai 264209, Peoples R China;[Du, GQ]Shandong Univ, Inst Space Sci, LEAD, Weihai 264209, Peoples R Chin 更多
摘要：We present a kind of large area subwavelength cavity antenna with artificial permeability-negative metamaterials at GHz range. The antenna has the advantages of flatness, ultra-thin thickness, high gain and good directivity. The optimal receiving area of the antenna is mainly determined by the size of the radiation source. Its directivity and sidelobe cancellation mainly depend on the patterns of the patch array as the radiation source. It is found that the antenna with non-uniform distributed patch array as the radiation source has better performance than that with uniform distributed patch array patterns. Otherwise, this type of metamaterial antenna has nearly the same performance compared to that of parabolic antenna with equal radiation aperture, so it has potential applications to replace the traditional large aperture parabolic antenna. (C) 2019 Author(s).