A compact dual-band omnidirectional antenna with folded microstrip lines and slotlines for 5G applications

IF 1 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Microwave and Optical Technology Letters Pub Date : 2024-10-28 DOI:10.1002/mop.70015

Jiangling Dou, Haokang Chen, Hao Gong, Yujie Chen, Tao Shen, Jian Song

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Abstract

A compact dual-band omnidirectional antenna with folded microstrip lines and slotlines is proposed. The antenna is composed of a substrate and a superstrate. The superstrate is employed to broaden the antenna bandwidth. The radiating patch is situated on the upper surface of the substrate and consists of folded microstrip lines. The performance of the high-frequency band can be optimized based on the analysis of the current distribution intensity. The bottom of the substrate is composed of a ground plane with slotlines. The introduction and improvement of the low-frequency band are achieved by modifying the ground plane structure with characteristic modal analysis. The antenna demonstrates omnidirectional radiation characteristics across both frequency bands. The dimensions of the antenna are π × 0.178 λ₀ × 0.178 λ₀ × 0.049 λ₀ (π × 22 × 22 × 6 mm). The antenna achieves a maximum gain of 3.37 dBi at 2.5 GHz and 2.74 dBi at 5.8 GHz. The measured impedance bandwidths for the two frequency bands are 17.3% and 21.7%, respectively.

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面向 5G 应用的折叠微带线和槽线紧凑型双频全向天线

本文提出了一种采用折叠微带线和槽线的紧凑型双频全向天线。天线由基板和叠层板组成。基板用于拓宽天线带宽。辐射贴片位于基片的上表面，由折叠微带线组成。高频段的性能可根据电流分布强度分析进行优化。基板底部由带槽线的接地平面组成。通过特征模态分析修改地平面结构，实现了低频带的引入和改进。该天线在两个频段都具有全向辐射特性。天线尺寸为 π × 0.178 λ0 × 0.178 λ0 × 0.049 λ0 （π × 22 × 22 × 6 毫米）。天线在 2.5 GHz 和 5.8 GHz 的最大增益分别为 3.37 dBi 和 2.74 dBi。两个频段的测量阻抗带宽分别为 17.3% 和 21.7%。

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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来源期刊

Microwave and Optical Technology Letters 工程技术-工程：电子与电气

CiteScore

3.40

自引率

20.00%

发文量

371

审稿时长

4.3 months

期刊介绍： Microwave and Optical Technology Letters provides quick publication (3 to 6 month turnaround) of the most recent findings and achievements in high frequency technology, from RF to optical spectrum. The journal publishes original short papers and letters on theoretical, applied, and system results in the following areas. - RF, Microwave, and Millimeter Waves - Antennas and Propagation - Submillimeter-Wave and Infrared Technology - Optical Engineering All papers are subject to peer review before publication