Azimov Uktam Fakhriddinovich, Abbas Anees, Park Seong-Wook, Hussain Niamat, Kim Nam
Department of Information and Communication, Chungbuk National University, Cheongju, 28644, Republic of Korea.
Department of Department of Intelligent Mechatronics Engineering, Sejong University, Seoul, 05006, Republic of Korea.
Heliyon. 2024 May 31;10(11):e32216. doi: 10.1016/j.heliyon.2024.e32216. eCollection 2024 Jun 15.
This paper presents a conformal, miniaturized, and geometrically simple monopole antenna designed for Vehicle-to-Everything (V2X) communications. The antenna consists of a flexible substrate, radiating patch, ground, and metallic stubs. Meandered lines are added to the U-shaped radiator to achieve the required bandwidth of the antenna. The antenna has |S|< -10 dB magnitude from 5.06 to 7.24 GHz, attaining a peak low magnitude of-68 dB. The antenna is configured into a 4-port Multiple-Input-Multiple-Output (MIMO) setup to minimize the mutual coupling between its elements. The proposed flexible MIMO antenna offers bandwidth from 5.37 to 7.34 GHz and a peak moderate gain of 4.63 dBi with omnidirectional stable radiation patterns. To improve the mutual coupling, two hollow concentric circular structures, in combination with a pair of stub networks are integrated between the elements of the MIMO system. The transmission coefficient and surface current analysis confirm the effectiveness of the decoupling structure. The presented MIMO antenna is characterized by high isolation, a low envelope correlation coefficient (ECC), and high diversity gain, suitable for V2X MIMO communication scenarios.
本文介绍了一种为车联网（V2X）通信设计的共形、小型化且几何结构简单的单极天线。该天线由柔性基板、辐射贴片、接地和金属短截线组成。在U形辐射器上添加了曲折线以实现天线所需的带宽。该天线在5.06至7.24 GHz频段内|S|幅度小于 -10 dB，达到了 -68 dB的峰值低幅度。该天线被配置成一个4端口多输入多输出（MIMO）装置，以最小化其元件之间的相互耦合。所提出的柔性MIMO天线在5.37至7.34 GHz频段内具有带宽，全向稳定辐射方向图的峰值中等增益为4.63 dBi。为了改善相互耦合，在MIMO系统的元件之间集成了两个空心同心圆结构以及一对短截线网络。传输系数和表面电流分析证实了解耦结构的有效性。所呈现的MIMO天线具有高隔离度、低包络相关系数（ECC）和高分集增益的特点，适用于V2X MIMO通信场景。
