紧凑型四端口圆极化多输入多输出 X 波段介质谐振天线。

Compact Four-Port Circularly Polarized MIMO X-Band DRA.

机构信息

Electronics and Communications Engineering Department, Minia University, El-Minia 61519, Egypt.

School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia.

出版信息

Sensors (Basel). 2022 Jun 13;22(12):4461. doi: 10.3390/s22124461.

DOI:10.3390/s22124461

PMID:35746243

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9230936/

Abstract

A circularly polarized (CP) multi-input multioutput (MIMO) dielectric resonator (DR) antenna (DRA) with compact size and four ports is implemented. CP radiation was achieved using the deformed DR geometry excited with aperture coupled feeding. A CPDRA with a single and two ports is investigated. The defected ground structure (DGS) was incorporated into the antenna for improving the isolation between the ports. The DGS was incorporated in such a way that the required phase difference between the generated orthogonal degenerate modes is preserved. This concept could be utilized in implementing a compact four-port CP antenna. The MIMO antenna provides a 10 dB impedance bandwidth of 38% (8.5-12.5 GHz) and a 3 dB AR bandwidth of 9.32% (9.2-10.1 GHz). The gain of the implemented antenna was around 6 dBi in the band where CP radiation was achieved. The MIMO performance parameters were calculated, and their values remained within the acceptable limits. The implemented antenna could suitably be used in X-band applications.

摘要

提出了一种具有小型化尺寸和四端口的圆极化（CP）多输入多输出（MIMO）介质谐振器（DR）天线（DRA）。采用孔径耦合馈电激励的变形 DR 几何结构实现 CP 辐射。研究了具有单端口和双端口的共面双极化（CPDRA）。为了提高端口之间的隔离度，将缺陷地结构（DGS）引入天线中。DGS 的引入方式保持了产生正交简并模式之间所需的相位差。这一概念可用于实现小型化四端口 CP 天线。该 MIMO 天线在 10 dB 阻抗带宽为 38%（8.5-12.5 GHz）和 3 dB 带宽为 9.32%（9.2-10.1 GHz）。在实现 CP 辐射的频段内，所实现天线的增益约为 6 dBi。计算了所实现天线的 MIMO 性能参数，其值仍在可接受范围内。所实现的天线可适用于 X 波段应用。