Ku波段背腔式蝶形缝隙天线设计  

Design of back⁃cavity bowtie⁃slot antenna at Ku band

作　　者：弥宝粒 张斌珍[1] 段俊萍[1] MI Baoli;ZHANG Binzhen;DUAN Junping(Science and Technology on Electronic Test&Measurement Laboratory,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学电子测试技术重点实验室,山西太原030051

出　　处：《现代电子技术》2021年第15期12-16,共5页Modern Electronics Technique

基　　金：国家自然科学基金项目(U1637212);装备预研领域基金项目(61404130402);山西省高等学校科技创新项目资助。

摘　　要：蝶形缝隙天线有着模型简单、结构对称、设计相对容易的优势。设计一款工作在Ku波段的背腔式蝶形缝隙天线。相对于微带蝶形天线,天线与金属背腔相结合,提高了天线的增益,天线的辐射特性得到了相应的改善。同时,采用共面波导馈电方式,进一步改善了阻抗带宽。文中分析了蝶形缝隙结构以及介质基板的介电常数对天线带宽和天线辐射性能的影响,经过仿真测试得到端口回波损耗小于-10 dB时,阻抗带宽可以达到1.06 GHz,最大增益为7.62 dBi。The bowtie⁃slot antenna has the advantages of simple model,symmetrical structure and easy design.A back⁃cavity bowtie⁃slot antenna working at Ku band is designed in this paper.In comparison with the microstrip bowtie antenna,the designed antenna combining with metal backcavity improves the antenna gain and perfects the antenna radiation characteristics.The feeding mode of coplanar waveguide is adopted to further improve the impedance bandwidth.The influence of the bowtie⁃slot structure and the dielectric constant of dielectric substrate on the antenna bandwidth and antenna radiation performance is studied.It is found by the simulation test that the maximum impedance bandwidth can reach 1.06 GHz and the maximum gain is 7.62 dBi when the port return loss is less than-10 dB.

关 键 词：蝶形缝隙天线 背腔 馈电方式 共面波导 介电常数 阻抗带宽 仿真测试 

分 类 号：TN82-34[电子电信—信息与通信工程]