A Dual-Band Frequency Reconfigurable MIMO Patch- slot Antenna Based on Reconfigurable Microstrip Feedline
A Dual-Band Frequency Reconfigurable MIMO Patch- slot Antenna Based on Reconfigurable Microstrip Feedline
复制标题
基于可重构微带馈线的双频频率可重构MIMO贴片天线
DOI：
10.1109/access.2018.2858442
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发表时间：
2018-01-01
期刊：
影响因子：
3.9
通讯作者：
Riaz, Sharjeel
中科院分区：
文献类型：
--
作者：
Zhao, Xiongwen;Riaz, Sharjeel
提出了一种基于微带馈线的双频频率可重构多输入多输出（MIMO）贴片缝隙天线设计。该天线具有平面结构并且包括四个对称放置的矩形贴片天线元件。在接地层中引入了一种具有双重用途的六边形缺陷接地结构（DGS），以减小天线尺寸并提高隔离度。天线的整体尺寸紧凑，基板总面积为120 x 60 x 1.6 mm（3），并印刷在FR4基板上。变容二极管集成在馈线内，以实现频率可重构性。所提出的天线设计具有宽的连续双频可重构特性，从1.3到2.6 GHz的隔离度超过12 dB的整个频带。所提出的设计进行了验证，提出了仿真和测量结果的S参数，辐射方向图，效率，和包络相关系数（ECC），并显示良好的协议。实现了端口之间小于0.2的ECC。紧凑的尺寸和双频频率可重构的特性，使所提出的设计无线手持设备和其他多频带MIMO应用的潜在候选人。
In this paper, a novel microstrip feedline-based dual-band frequency reconfigurable multiple-input multiple-output (MIMO) patch-slot antenna design is presented. The antenna has a planar structure and comprises four symmetrically placed rectangular patch antenna elements. A dual-purpose hexagonal-shaped defected ground structure (DGS) is introduced into the ground plane for antenna size reduction and isolation enhancement. The overall size of the antenna is compact with total substrate area of 120 x 60 x 1.6 mm(3) and is printed on FR4 substrate. Varactor diodes are integrated within feedline to achieve frequency reconfigurability. The proposed antenna design exhibits a wide continuous dual frequency reconfigurable characteristic from 1.3 to 2.6 GHz with isolation of more than 12 dB for entire band. The proposed design is verified by presenting the simulation and measured results of S-parameters, radiation pattern, efficiency, and envelope correlation coefficient (ECC), and displaying good agreement. ECC of less than 0.2 between the ports is achieved. The compact size and dual-band frequency reconfigurable characteristics make the proposed design potential candidate for wireless handheld devices and other multiband MIMO applications.