A miniaturized wideband high-gain end-fire antenna for 5G-R communication applications

High-speed Railway Pub Date : 2024-12-01 DOI:10.1016/j.hspr.2024.11.004

Yutong Shi , Yanliang Wu , Changhai Hu , Zheng Ma , Wen Luo

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Abstract

This paper presents a miniaturized wideband high-gain microstrip end-fire antenna specifically designed for 5G-R communication applications. The antenna structure comprises a microstrip folded dipole resonator and end-fire directing units. By employing Intercalated Coupling Structures (ICS) between the folded dipole resonator and the ground plane, the resonant frequency of the antenna is shifted to lower frequencies, thereby significantly enhancing the operational bandwidth. Furthermore, the inclusion of three end-fire directing units positioned in front of the folded dipole oscillator substantially improves the antenna's end-fire gain. The designed antenna exhibits a relative impedance bandwidth of 46 % (ranging from 1.36 to 2.18 GHz), with a peak gain of 7.33 dBi at the 2100 MHz 5G-R frequency band. The overall dimensions of the antenna are 0.31λ_L × 0.39λ_L × 0.008λ_L, where λ_L denotes the wavelength at the lowest frequency. The proposed antenna demonstrates a broad operational bandwidth, rendering it suitable for 5G-R mobile communications.

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一种用于5G-R通信应用的小型化宽带高增益端射天线

本文介绍了一种专为5G-R通信应用而设计的小型化宽带高增益微带端火天线。天线结构包括微带折叠偶极子谐振器和端火定向单元。通过在折叠偶极子谐振腔与地平面之间采用插层耦合结构（Intercalated Coupling Structures， ICS），使天线的谐振频率向低频偏移，从而显著提高了工作带宽。此外，位于折叠偶极子振荡器前面的三个端射定向单元的包含大大提高了天线的端射增益。设计的天线在2100 MHz 5G-R频段的相对阻抗带宽为46 %(1.36 ~ 2.18 GHz)，峰值增益为7.33 dBi。天线的外形尺寸为0.31λL × 0.39λL × 0.008λL，其中λL为最低频率处的波长。该天线具有较宽的操作带宽，适用于5G-R移动通信。

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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High-speed Railway

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