A Frequency Tunable Dielectric Resonator Antenna with Reduction of Cross Polarisation for Wi MAX and Sub 6 GHz 5G Applications

Pub Date : 2023-07-11 DOI:10.14429/dsj.73.18180

Rajkishor Kumar, Avinash Chandra, N. Mishra, R. Chaudhary

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Abstract

A frequency Tunable (mechanical tuning) Linearly Polarized (TLP) rectangular Dielectric Resonator Antenna(DRA) coupled with a horizontal/vertical-slot and excited with circular-ring type feed is investigated in this article.The frequency tunability (mechanical tuning) is achieved by the rotation of slot at different angles of the proposedstructure. Hence, two linearly polarized antennas have been proposed for different frequency bands such as Wi-MAX and Sub-6 GHz/5G, respectively, using slot variations (named as DRA-1 and DRA-2). TE 11δ mode has been excited in both the DRAs and confirmed by orientation of electric field inside the rectangular DRA. The measured -10 dB input impedance bandwidths of DRA-1 offer 21.60 % being centered at 2.87 GHz and the separation of co-polarized and cross-polarized field levels is above -24 dB in the broadside direction (xz-plane). Whereas DRA-2 offers measured -10 dB input impedance bandwidths of 23.03% being centered at 3.56 GHz having a separation of co-polarized and cross-polarized field levels are above -23 dB in the broadside direction (xz-plane). In addition, the proposed DRA-1 and DRA-2 show a maximum gain of 5.23 dBi and 4.75 dBi in broadside direction, respectively.

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一种频率可调的介质谐振器天线，可减少交叉极化，适用于 Wi MAX 和 6GHz 以下 5G 应用

本文研究了一种频率可调（机械调谐）线性极化（TLP）矩形介质谐振器天线（DRA），该天线与水平/垂直插槽耦合，并使用圆环型馈电激励。因此，利用槽的变化（命名为 DRA-1 和 DRA-2），提出了两种线性极化天线，分别用于 Wi-MAX 和 Sub-6 GHz/5G 等不同频段。在两个 DRA 中都激发了 TE 11δ 模式，并通过矩形 DRA 内部的电场方向进行了确认。测得的 DRA-1 -10 dB 输入阻抗带宽为 21.60%，中心频率为 2.87 GHz，在宽边方向（xz 平面）上，同极化和跨极化场电平的分离度高于 -24 dB。而 DRA-2 的测量 -10 dB 输入阻抗带宽为 23.03%，以 3.56 GHz 为中心，在宽边方向（xz 平面）上，共极化和跨极化场电平的分离度高于 -23 dB。此外，拟议的 DRA-1 和 DRA-2 在宽边方向的最大增益分别为 5.23 dBi 和 4.75 dBi。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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