基于类Minkowski-Like分形结构的5G宽带阵列天线  

A Broadband Array Antenna for 5G Based on Minkowski-Like Fractal Structure

作　　者：王泽敏 逯暄 彭甫镕 张婷 WANG Zemin;LU Xuan;PENG Furong;ZHANG Ting(College of Physics and Electronic Engineering,Shanxi University,Taiyuan 030006,China;Institute of Big Data Science and Industry,Shanxi University,Taiyuan 030006,China)

机构地区：[1]山西大学物理电子工程学院,山西太原030006 [2]山西大学大数据科学与产业研究院,山西太原030006

出　　处：《测试技术学报》2025年第2期247-254,共8页Journal of Test and Measurement Technology

基　　金：国家自然科学基金面上资助项目(62276162);山西省基础研究计划资助项目(202203021222016)。

摘　　要：为满足5G通信需求,设计了一款基于类Minkowski分形结构的宽带阵列天线。阵列天线采用厚度为1.2 mm、介电常数为4.4的FR4介质基板,整体尺寸360 mm×158 mm。天线由4个阵元线性排列而成,阵元的微带贴片上刻蚀了2阶类Minkowski分形结构,将一分二威尔金森功分器平移复制转换为一分四功分器,各输出端口分别为1×4排列的各阵元馈电,接地面采用多个切角的矩形相连。阵列天线工作于1~6 GHz频段,增益达2~9.18 dB,满足全向辐射特性。HFSS仿真与实测结果验证了设计的准确性和实用性。这一成果展示了分形阵列天线在多频带操作和宽带应用中的潜力,为5G及更高频段通信技术的天线设计提供了理论和实践依据。To meet the demands of 5G communications,a broadband array antenna based on a Minkowskilike fractal structure has been designed.A 1.2 mm thick FR4 substrate with a dielectric constant of 4.4 and overall dimensions of 360 mm×158 mm are utilized in the array antenna.Comprising four linearly arranged elements,each microstrip patch element of the array is etched with a 2nd-order Minkowski-like fractal structure.A Wilkinson power divider that splits one input into two outputs is replicated and transformed into a 1-to-4 power divider with each output feeding one of the 1×4 arranged elements.The ground plane is formed by connecting multiple rectangles with cut corners.The array antenna operates within the 1~6 GHz frequency range,achieving gains from 2~9.18 dB and omnidirectional radiation characteristics.HFSS simulations and measurement results verified the accuracy and practicality of the design.This research demonstrates the potential of fractal array antennas in multi-band operation and broadband applications,providing both theoretical and practical foundations for antenna design in 5G and higher frequency communications technologies.

关 键 词：5G通信 类Minkowski分形结构 阵列天线 威尔金森功分器 宽带天线 

分 类 号：TN822.8[电子电信—信息与通信工程]