ABSTRACT

In this study, a spatially separated eight-port box shaped multiple-input-multiple-output (MIMO) cylindrical dielectric resonator antenna (cDRA) is presented which supports quad-directional pattern diversity characteristics. Initially, a cDRA is radiated with the assistance of two different excitation mechanisms to generate decoupled orthogonal modes. This dual-port primary structure is combined with a similar primary structure in a box-shaped manner to yield an eight-port MIMO antenna system. The antenna elements (Dielectric Resonators) are located in such a way that each antenna element can able to excite in diverse directions to achieve spatially separated radiated beams. Two different isolation improvement mechanisms are applied within the structure (i) excitation of decoupled orthogonal modes; (ii) spatially decoupled radiation pattern. With these dual techniques, the presented MIMO antenna can able to deliver better than 20 dB of isolation between the antenna elements without using any extra decoupling structure.

摘要

在这项研究中，提出了一种空间分离的八端口盒形多输入多输出（MIMO）圆柱电介质谐振器天线（cDRA），该天线支持四向模式分集特性。最初，在两个不同的激励机制的帮助下辐射cDRA以生成解耦的正交模式。该双端口初级结构与类似的初级结构以箱形方式组合在一起，以产生一个八端口MIMO天线系统。天线元件（电介质谐振器）的放置方式应使每个天线元件都能够沿不同方向激发，以实现空间上分开的辐射束。在结构中应用了两种不同的隔离改善机制（i）解耦正交模式的激励；（ii）在空间上解耦的辐射方向图。