Metasurface Cloaks to Decouple Closely Spaced Printed Dipole Antenna Arrays Fed by a Microstrip-to-Balanced Transmission-Line Transition
Metasurface Cloaks to Decouple Closely Spaced Printed Dipole Antenna Arrays Fed by a Microstrip-to-Balanced Transmission-Line Transition
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DOI：
10.1109/access.2021.3112771
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发表时间：
2021-01-01
期刊：
影响因子：
3.9
通讯作者：
Yakovlev, Alexander B.
中科院分区：
文献类型：
--
作者：
Lee, Doojin;Yakovlev, Alexander B.
在这项工作中，我们对超表面覆盖的一维和二维紧密间隔的微带偶极子天线阵列进行了数值研究，以便正确隐藏和解耦在相邻频率运行的天线阵列。我们证明，通过用椭圆形超表面覆盖偶极子天线元件，由微带到平衡传输线过渡馈送的两个强耦合阵列在一维和二维阵列场景中可以有效解耦。超表面包括印刷在偶极子天线周围的椭圆形介电盖上并与基板集成的亚波长周期性金属条。我们提出了一种彼此靠近放置的隐形印刷偶极子阵列的实用设计，并证明这些阵列在近场中解耦，并在远场中独立运行，其原始辐射特性就像是隔离的一样。
In this work, we present a numerical study of 1D and 2D closely spaced antenna arrays of microstrip dipole antennas covered by a metasurface in order to properly cloak and decouple the antenna arrays operating at neighboring frequencies. We show that the two strongly coupled arrays fed by a microstrip-to-balanced transmission-line transition are effectively decoupled in 1D and 2D array scenarios by covering the dipole antenna elements with an elliptically shaped metasurface. The metasurface comprises sub-wavelength periodic metallic strips printed on an elliptically shaped dielectric cover around the dipole antennas and integrated with the substrate. We present a practical design of cloaked printed dipole arrays placed in close proximity of each other and demonstrate that the arrays are decoupled in the near field and operate independently in the far field with their original radiation characteristics as if they were isolated.