Decoupling and Cloaking of Interleaved Phased Antenna Arrays Using Elliptical Metasurfaces
Decoupling and Cloaking of Interleaved Phased Antenna Arrays Using Elliptical Metasurfaces
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DOI：
10.1109/tap.2019.2957286
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发表时间：
2020-06-01
影响因子：
5.7
通讯作者：
Alu, Andrea
中科院分区：
文献类型：
--
作者：
Bernety, Hossein Mehrpour;Yakovlev, Alexander B.;Alu, Andrea
我们应用电磁不可见/隐身的概念，以改善辐射特性和解耦两个紧密间隔和交错相控线性天线阵列的条形单极子工作在接近的频率，以恢复其隔离的辐射模式，并消除不必要的交叉耦合元件之间。我们实现了这种效果，使用椭圆形的隐形超表面设计的相互交叉耦合的元素的不同的阵列。我们分析和研究的隐身和去耦效果，在改善功能的耦合阵列的辐射方向图和实现的增益，分别。因此，彼此靠近放置的天线阵列可以在宽范围的波束扫描角度内独立辐射，恢复它们在彼此隔离时的特性。
We apply the concept of electromagnetic invisibility/cloaking to improve the radiation properties and decouple two tightly spaced and interleaved phased linear antenna arrays of strip monopoles operating at close frequencies, in order to restore their isolated radiation patterns and eliminate the undesired cross-coupling between their elements. We realize this effect using elliptically shaped cloaking metasurfaces designed for mutually cross-coupled elements of the distinct arrays. We analyze and investigate the cloaking and decoupling effects in improving the functionality of the coupled arrays in terms of their radiation patterns and realized gain, respectively. As a result, the antenna arrays placed in close proximity of each other can radiate independently for a wide range of beam scanning angles, restoring the properties they would have when isolated from each other.