Broadband Ground-Embedded Dielectric Resonator Antenna With Half-Space Coverage for 5G Applications

IF 4.6 1区 计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Lei Guo;Yipei Qiao;Wenwen Yang;Kwok Wa Leung
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引用次数: 0

Abstract

This communication presents a novel ground-embedded dielectric resonator (DR) antenna (DRA) which has a broad bandwidth and wide half-space coverage, based on the concept of complementary superimposition. By using the embedded ground, horizontal and vertical electric currents can be introduced. Their radiation can be combined with that of the original DRA, significantly boosting radiation at low elevation angles. This results in broad half-power beamwidths (HPBWs) of ~180° in two elevation planes. The design achieves wide half-space coverage across a wide bandwidth by exciting two adjacent modes. To validate the theory, the proposed antenna was fabricated and measured. Measured results show a broad usable impedance bandwidth of 2.35–3.55 GHz (40.68%), with HPBWs of ~180°. The maximum gains are 2.54 and 2.13 dBi at $\theta = 0^{\circ }$ (boresight) and $\theta = 90^{\circ }$ , respectively. Due to its embedded structure, our antenna is compact, making it promising for 5G applications that generally require both wide beamwidth and impedance bandwidth.
5G半空间覆盖宽带地面嵌入式介质谐振器天线
该通信基于互补叠加的概念,提出了一种具有宽带宽和宽半空间覆盖的新型地面嵌入式介质谐振器(DR)天线。利用嵌入式接地,可以引入水平和垂直电流。它们的辐射可以与原来的DRA相结合,在低仰角显著增加辐射。这导致了在两个仰角平面上约180°的宽半功率波束宽度(HPBWs)。该设计通过激发两个相邻模式实现了宽带宽上的宽半空间覆盖。为了验证该理论,对所提出的天线进行了制作和测量。测量结果表明,可用阻抗带宽为2.35 ~ 3.55 GHz (40.68%), hpbw为~180°。在$\theta = 0^{\circ}$ (boressight)和$\theta = 90^{\circ}$时,最大增益分别为2.54和2.13 dBi。由于其嵌入式结构,我们的天线结构紧凑,使其适用于通常需要宽波束宽度和阻抗带宽的5G应用。
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来源期刊
CiteScore
10.40
自引率
28.10%
发文量
968
审稿时长
4.7 months
期刊介绍: IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques
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