Faculty of Electrical and Computer Engineering, University of Tabriz, 5166616471, Tabriz, Iran.
Department of Electrical Engineering and Computer Science, University of Tennessee, Knoxville, 37996, USA.
Sci Rep. 2023 Feb 18;13(1):2885. doi: 10.1038/s41598-023-29889-y.
In this paper, we utilized the method of mantle cloaking to decouple/isolate two densely packed interleaved patch array antennas operating at the same frequency but with orthogonal polarizations. To reduce mutual coupling between the adjacent elements, vertical strips, as a type of elliptical mantle cloaks, are located in close proximity to the patches. At the operating frequency of f = 3.7 GHz, the edge-to-edge spacing of the elements of the two interleaved arrays is less than λ/80 (1 mm) and the center-to-center spacing of each array element is 0.7 λ (57 mm). The proposed design is implemented using 3D printing technology, and its performance in terms of return loss, efficiency, gain, radiation patterns, and isolation is measured for evaluation. The results show the radiation characteristics of the arrays are perfectly retrieved after cloaking similar to the isolated arrays. Decoupling tightly spaced patch antenna arrays on a single substrate paves the way to achieve miniaturized communication systems with full duplex operation or dual polarization communication.
在本文中，我们利用覆盖层的方法来解耦/隔离两个密集排列的交错贴片天线阵列，这些天线阵列工作在相同的频率，但具有正交的极化。为了减少相邻单元之间的互耦合，垂直条带作为一种椭圆形覆盖层，被放置在贴片附近。在工作频率为 f = 3.7 GHz 时，两个交错阵列的单元的边缘到边缘间距小于 λ/80（1 毫米），每个阵列单元的中心到中心间距为 0.7 λ（57 毫米）。所提出的设计使用 3D 打印技术实现，并对其回波损耗、效率、增益、辐射图和隔离度等性能进行了测量评估。结果表明，在覆盖层之后，阵列的辐射特性得到了很好的恢复，类似于隔离的阵列。在单个衬底上解耦紧密间隔的贴片天线阵列为实现具有全双工操作或双极化通信的小型化通信系统铺平了道路。
