单周期EBG结构在Ka频段阵列天线中降耦合效应的研究
发布时间：2019-03-06 17:13
【摘要】：电磁带隙(Electromagnetic bandgap,EBG)结构是周期性结构,具有禁带的特性,可以用在阵列天线中降低天线单间的互耦。但是,现有的研究大都是采用若干个周期EBG的结构,占据较大的面积,导致天线间的距离较大,不利于阵列的紧凑要求。本文研究采用单个周期甚至是单个EBG结构对微带天线阵列单元间互耦等特性的影响。研究表明使用单个EBG结构或单周期的EBG阵列也能增大天线阵列单元隔离度,并分别可提高隔离度约3d B和7d B。但是,研究也表明,由于天线与EBG结构之间耦合作用的影响,采用单周期或单个EBG来提高隔离度时,S21对EBG贴片的尺寸及天线单元间的距离都较为敏感。
[Abstract]:The electromagnetic band gap (Electromagnetic bandgap,EBG) structure is a periodic structure and has the characteristics of band gap. It can be used to reduce the mutual coupling between antennas in the array antenna. However, most of the existing studies are based on several periodic EBG structures, which occupy a large area, resulting in a larger distance between antennas, which is not conducive to the compact requirements of the array. In this paper, the effects of a single period or even a single EBG structure on the mutual coupling between microstrip antenna array elements are studied. The results show that the isolation of antenna array elements can also be increased by using a single EBG structure or a single period EBG array, and the isolation degree can be increased by about 3D B and 7 d B. However, due to the coupling between the antenna and the EBG structure, S21 is more sensitive to the size of the EBG patch and the distance between the antenna elements when using a single period or a single EBG to improve isolation.
【作者单位】： 桂林电子科技大学信息与通信学院;电子科技大学物理电子学院;
【基金】：广西无线宽带通信与信号处理重点实验室2014年主任基金资助项目(GXKL0614103) 桂林电子科技大学科学研究基金项目 国家自然科学基金资助项目(61371056)
【分类号】：TN822
本文编号：2435732
[Abstract]:The electromagnetic band gap (Electromagnetic bandgap,EBG) structure is a periodic structure and has the characteristics of band gap. It can be used to reduce the mutual coupling between antennas in the array antenna. However, most of the existing studies are based on several periodic EBG structures, which occupy a large area, resulting in a larger distance between antennas, which is not conducive to the compact requirements of the array. In this paper, the effects of a single period or even a single EBG structure on the mutual coupling between microstrip antenna array elements are studied. The results show that the isolation of antenna array elements can also be increased by using a single EBG structure or a single period EBG array, and the isolation degree can be increased by about 3D B and 7 d B. However, due to the coupling between the antenna and the EBG structure, S21 is more sensitive to the size of the EBG patch and the distance between the antenna elements when using a single period or a single EBG to improve isolation.
【作者单位】： 桂林电子科技大学信息与通信学院;电子科技大学物理电子学院;
【基金】：广西无线宽带通信与信号处理重点实验室2014年主任基金资助项目(GXKL0614103) 桂林电子科技大学科学研究基金项目 国家自然科学基金资助项目(61371056)
【分类号】：TN822
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