In this work, the generation of circular polarization (CP) in two different dielectric resonator antenna (DRA) elements (one element gets energized by the offset conformal-strip and another one is by the offset microstrip-slot) is precisely explored. CP radiations from the presented DRA elements are acquired by removing a proper asymmetrical notch from the rectangular dielectric resonators (rDRs) and feeding the rDRs at an appropriate offset distance from the center. Furthermore, these two DRA elements are integrated into one antenna system, which can be used for multiple-input-multiple-output (MIMO) application. Owing to the use of two different excitation schemes, the dielectric resonators are mounted on two opposite sides of the substrate and are being radiated in two opposite directions to realize pattern diversity compact MIMO system. So, the presented MIMO design is able to diminish the intersecting spatial field components between the antenna elements, which in turn reduce the envelope correlation coefficient and improve the inter-port isolation. The proposed diversity/MIMO antenna can be utilized as a proficient contender in rich multipath environments to overcome the appearances of channel fading. Experimental outcomes convey that the proposed MIMO antenna features overlapping 3-dB axial ratio (AR) band ranging from 5.30 to 5.87 GHz and overlapping 10-dB impedance band ranging from 5.15 to 6.12 GHz with inter-port isolation of greater than 17 dB throughout the usable frequency band.

在这项工作中，精确探索了在两个不同的介质谐振器天线 (DRA) 元件（一个元件由偏置共形带通电，另一个由偏置微带槽通电）中产生圆极化（CP）。通过从矩形介电谐振器 (rDR) 中去除适当的不对称凹口并以距中心适当的偏移距离馈入 rDR，可以获得来自所呈现的 DRA 元件的 CP 辐射。此外，这两个 DRA 元件集成到一个天线系统中，可用于多输入多输出 (MIMO) 应用。由于采用了两种不同的激励方案，介质谐振器安装在基板的两个相对侧，并在两个相反的方向上辐射，以实现模式分集的紧凑型 MIMO 系统。所以，所提出的 MIMO 设计能够减少天线元件之间的交叉空间场分量，从而降低包络相关系数并提高端口间隔离度。所提出的分集/MIMO 天线可用作丰富多径环境中的有效竞争者，以克服信道衰落的出现。实验结果表明，所提出的 MIMO 天线具有重叠的 3-dB 轴比 (AR) 频带，范围为 5.30 至 5.87 GHz，重叠的 10-dB 阻抗频带范围为 5.15 至 6.12 GHz，端口间隔离度大于 17 dB。可用频段。进而降低包络相关系数，提高端口间隔离度。所提出的分集/MIMO 天线可用作丰富多径环境中的有效竞争者，以克服信道衰落的出现。实验结果表明，所提出的 MIMO 天线具有重叠的 3-dB 轴比 (AR) 频带，范围为 5.30 至 5.87 GHz，重叠的 10-dB 阻抗频带范围为 5.15 至 6.12 GHz，端口间隔离度大于 17 dB。可用频段。进而降低包络相关系数，提高端口间隔离度。所提出的分集/MIMO 天线可用作丰富多径环境中的有效竞争者，以克服信道衰落的出现。实验结果表明，所提出的 MIMO 天线具有重叠的 3-dB 轴比 (AR) 频带，范围为 5.30 至 5.87 GHz，重叠的 10-dB 阻抗频带范围为 5.15 至 6.12 GHz，端口间隔离度大于 17 dB。可用频段。