Cloaking of Slot Antennas at C-Band Frequencies Using Elliptical Metasurface Cloaks
Cloaking of Slot Antennas at C-Band Frequencies Using Elliptical Metasurface Cloaks
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DOI：
10.1109/lawp.2022.3193038
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发表时间：
2022-11-01
影响因子：
4.2
通讯作者：
Yakovlev, Alexander B.
中科院分区：
文献类型：
--
作者：
Pawar, Shefali;Skinner, Harry G.;Yakovlev, Alexander B.
在这封信中，我们奋进抑制双槽天线（在C波段频率工作）之间的互耦的不利影响，位于亚波长分离。相互耦合的影响在如此接近时变得非常明显，并导致每个天线的辐射方面的恶化。为了减轻这些不利影响，我们利用的概念，专门的斗篷斗篷的设计，椭圆形的介电区域与电容金属条集成。仿真结果表明，通过用这些独特设计的元表面包围各个缝隙的每个辐射边缘，缝隙天线在近场实现了去耦。此外，超颖表面斗篷还有助于恢复缝隙的远场辐射特性。在这方面，我们的斗篷设计确保了缝隙天线不会感知到彼此的存在，使每个缝隙天线能够单独工作，就好像它们是孤立的一样。
In this letter, we endeavor to curb the adverse effects of mutual coupling between two-slot antennas (operating at C-band frequencies), situated at a subwavelength separation. The effects of mutual coupling become extremely apparent at such close proximity and leads to the deterioration of the radiation aspects of each antenna. To mitigate these detrimental effects, we exploit the concept of mantle cloaking for the design of specialized cloaks, consisting of elliptical dielectric regions integrated with capacitive metallic strips. It is demonstrated through simulation results that by enclosing each radiating edge of the individual slots with these uniquely designed metasurfaces, the slot antennas are decoupled in the near field. Moreover, the metasurface cloaks also facilitate restoration of the far field radiation properties of the slots. In this regard, our cloak design ensures that the slot antennas do not sense the presence of each other, enabling each slot antenna to operate individually, as if they were isolated.