基于Koch雪花分形结构的缝隙平面阵列天线设计  

High-gain slot array antenna design utilizing Koch snowflake fractal structure

作　　者：李昱邈 王慧珍 薛嘉璐 邢韶华 刘宇峰 Li Yumiao;Wang Huizhen;Xue Jialu;Xing Shaohua;Liu Yufeng(School of Physics and Electronic Engineering,Shanxi University,Taiyuan 030006,China)

机构地区：[1]山西大学物理电子工程学院,太原030006

出　　处：《电子测量技术》2024年第9期40-45,共6页Electronic Measurement Technology

基　　金：山西省高等学校大学生创新创业训练计划项目(S202210108030)资助。

摘　　要：本文提出了一种基于Koch雪花六边分形结构的缝隙单元,基于该分形单元设计了一款工作于5.8 GHz的4×4缝隙阵列天线。天线采用并行功分网络馈电,获得了高定向性、高增益特性。根据设计结果加工制作了天线样品并测试。测量结果表明,天线阻抗带宽5.7%(5.56~5.89 GHz),阻抗匹配良好。在工作频率处,天线呈现良好的定向辐射特性和稳定增益,辐射增益达到19.85 dBi,对应口径效率为80.69%。3-dB增益带宽达到18.40%(5.13~6.20 GHz)。This paper presents a novel approach to the design of a 4×4 slot array antenna operating at 5.8 GHz,utilizing a slot element based on the Koch Snowflake hexagonal fractal structure.The antenna is fed by a parallel feeding network,resulting in characteristics of high directivity.The proposed design was experimentally validated through fabrication and testing.Measurement results indicate a 5.7%impedance bandwidth(5.56~5.89 GHz)with well-matched impedance.At the operating frequency,the antenna exhibits commendable directional radiation characteristics and stable gain,achieving a peak gain of 19.85 dBi and a corresponding aperture efficiency of 80.69%.Moreover,the 3-dB gain bandwidth extends to 18.40%(5.13~6.20 GHz),demonstrating the efficacy of the Koch Snowflake fractal structure in enhancing the performance of slot array antennas.

关 键 词：平面阵列天线 Koch雪花分形 并行馈电 高增益 

分 类 号：TN823.27[电子电信—信息与通信工程]